Best Fishing Thermometers

Kristian Ole



Our Top Choices:

Best Fly Fishing Thermometer: SAMSFX Aluminum Stream Thermometer

Measure water temperature accurately for the perfect fly fishing experience with this top-rated thermometer.

Best High-End Fishing Thermometer: Umpqua Stream Thermometer

Take your fishing game to the next level with this high-end thermometer, designed for the most discerning anglers.

Best Fishing Thermometer for the price: Aventik Fishing Thermometer

Get precise temperature readings without breaking the bank with this affordable fishing thermometer that offers excellent value for its price.

While many anglers do not consider fishing thermometers essential for success, you can improve your chances of a good catch if you are armed with the best fishing thermometer. There is a scientific reason behind it. The feeding patterns of different fish species depend on the water’s temperature. So, if you have a fishing thermometer at your disposal, you can find the best fishing spots.

Best Fishing Thermometers

Fish tend to match their body temperature to that of the water. Hence, when the temperature of the water dips, the fish’s metabolism slows down, reducing the need for food. As a result, this can have a negative impact on your fishing opportunities.

On the other hand, if the temperature of the water soars, oxygen content depletes. This causes the fish to become lethargic and not eat much.

A fishing thermometer helps you find the optimal water temperature and, in doing so, ensures your fishing success. With the help of the thermometer, you can ensure that the water is neither too hot nor too cold and stick to spots with ideal fish conditions.

Check out our unbiased reviews of the top 6 fishing thermometers. We have based our list on personal experience and user comments and reviews to ensure you get an honest idea about the fishing thermometers that are the best. Also, you will get an insight into how to buy the best fishing thermometer to make an informed choice.

Top 6 fishing thermometers

Umpqua Stream Thermometer

Last update on 2023-10-04 / Affiliate links / Images from Amazon Product Advertising API

This fishing thermometer is affordable and falls in the budget category. So, if you are not willing to spend a lot and still want a good-quality fishing thermometer, this is the one to opt for. The compact size and affordable pricing make it a worthwhile investment.

Product Specs

  • Metal housing
  • 4.5 inches long
  • Temperature readings Celsius and Fahrenheit
  • Lanyard ring

Why We Recommend This Product

An affordable thermometer that does what you want it to gives you an accurate water temperature reading. We liked the fact that you can use it while kayaking or canoeing. The small and compact design allows you to fit the thermometer into your backpack.

You can easily use this fishing thermometer in a running stream, brook, or river. While some users complained of inaccurate readings, we did not face such an issue. We always got precise and accurate readings while testing it.

We love the bright green color. It ensured we could find it easily in the tackle box without looking for it. It provides reading in Celsius and Fahrenheit, making it convenient for anglers worldwide.


  • Affordably priced
  • Small and compact
  • Portable
  • Ideal for campers and kayakers
  • Vibrantly colored so you will find it easily in your tackle box


  • Not as durable as you would expect
  • Takes time to read the water temperature
  • It can give a few inaccurate readings

Tip: Let the thermometer stay in water for at least a minute to get a precise reading. You may want to take a couple of readings to ensure the temperature readings are accurate.

Info Alert: While the Orvis fishing thermometer does have a few issues, we believe you should opt for it if you are looking for an affordable fishing thermometer that has a simple design and does what you expect it to do.

SAMSFX Aluminum Stream Thermometer

SAMSFX Fly Fishing Water Thermometer Stream 20-120 Fahrenheit/Celsius Easy to Rotate Lake Thermometer Temperature Measurement Anglers Vest Pack Tool Accessories(Gun Gray)
262 Reviews
SAMSFX Fly Fishing Water Thermometer Stream 20-120 Fahrenheit/Celsius Easy to Rotate Lake Thermometer Temperature Measurement Anglers Vest Pack Tool Accessories(Gun Gray)
  • DUAL SCALE EASY TO READ: Temperature range is from -10°C to 50°C, 20°F to 120°F. You don't need to open the end caps, just rotate the external handle to make the glass part of the thermometer turn to the reading you prefer

Last update on 2023-10-04 / Affiliate links / Images from Amazon Product Advertising API

This fishing thermometer by SAMSFX has a durable construction that lasts a long time. It is crafted from high-quality materials. It offers accurate readings and is the perfect fishing tool for anyone who wants to optimize their “luck” when fishing.

Product Specs

  • Aluminum housing
  • The temperature reading from 20 to 120 deg Fahrenheit (10 to 50 deg Celsius)
  • Lanyard attachment
  • Temperature scale
  • 4.5 inches in length

Why We Recommend This Product

We loved the solid construction of the thermometer, even though the markings may be a bit small. The aluminum housing means the thermometer will not break very easily, and you can carry it in your tackle box. This said, it is small enough to carry in your pocket. If you are worried about losing it, use the lanyard attachment.

The thermometer takes about five to seven minutes to show the readings, which appears to be the norm among fishing thermometers. The readings are pretty accurate, and you get a great idea about changing your fishing tactics based on the fish you want to catch.

The thermometer is not electronic, so you don’t have to worry about batteries. We recommend this fishing thermometer for experienced and novice anglers. It is easy to use, and we found it quite reliable. This thermometer is designed for all types of fish, be it bass, cod, or trout. You can use it to ascertain the fish’s feeding patterns and gauge the precise depth where you will find the fish.


  • Accurate
  • It comes in an aluminum case
  • Easy to use
  • It does not need batteries
  • It comes with a lanyard attachment
  • Compact and portable
  • Durable
  • Ideal for novice and new anglers


  • Can be expensive
  • Takes time to display the water temperature
  • Tad bit tedious to read

Tip: This is the perfect fishing thermometer for beginner anglers and anyone who is rough with their gear.

Info Alert: Before you begin using it, remember to acclimatize the thermometer. That way, you will get an accurate reading that you can depend on.

Stream Thermometer by Vbestlife

Last update on 2023-10-04 / Affiliate links / Images from Amazon Product Advertising API

If you are a fly fisherman, you will love this fishing thermometer. It is designed with the needs of a fly fisherman in mind. The thermometer comes in a metal housing, making it extremely durable. You can carry it in your tackle box without worrying about damage. It is small enough even to put in your pocket.

Product Specs

  • Combination of high-quality metal and glass
  • It comes in three different colors
  • About 5.1 inches in length
  • 0.4 inches diameter
  • Weight is 25g
  • Hook ring

Why We Recommend This Product

We are great admirers of fly fishing and found that this is one of the few fishing thermometers designed for fly fishermen. It is durable, thanks to the metal casing. It comes with a pocket clip and a lanyard ring so you can hook it to your body and never worry about losing it. It is small enough to carry in your pocket without feeling burdened. The clip is made from stainless steel, so it will not rust or corrode on exposure to water.

It provides a quick and accurate reading. You do not have to wait long to check the water temperature, which enables you to change your fishing tactics and strategies based on the readings. We liked that you can easily use the thermometer in streams, rivers, and brooks.

While some people found it difficult to read the thermometer, we did not face such a problem. It could be because we are conversant with Celsius. This thermometer does not require batteries as it is not an electronic thermometer.


  • Metal housing
  • Accurate
  • Made for fly fishing
  • It can be used in a river, stream, or brook
  • Portable
  • Easy to carry
  • Ring attachment to prevent loss


  • The reading is only in Celsius, and those used to Fahrenheit will find it difficult to gauge the water temperature accurately.

Tip: It provides accurate reading in running water, making it a handy fishing tool to have if you are in an unfamiliar fishing spot.

Info Alert: Be sure to acclimatize the thermometer before using it. The acclimatization process takes about 5 to 10 minutes. Once it is done, the fishing thermometer offers precise readings.

Aventik Fishing Thermometer

Last update on 2023-10-04 / Affiliate links / Images from Amazon Product Advertising API

This fishing thermometer by Asixx is portable and extremely convenient to carry. It is meant for fly fishing so that you can use it in rivers, brooks, and streams. It is not an electronic thermometer, so you do not need batteries to operate it. You can immerse the thermometer in the water without worries.

Product Specs

  • Made from high-quality metal
  • Available in three colors
  • 5.1 inches in length
  • Weight is 25g
  • The diameter is 0.4 inches

Why We Recommend This Product

This is an understated fishing thermometer. We found the size compact and could carry it in the pocket without any hassles. We also loved the high-quality metal used for the housing. It means you can carry the thermometer in your tackle box without worrying about breakage.

It has a pocket clip and a lanyard ring made from stainless steel. So, it is rust-resistant and corrosion-proof. It is specifically designed for fly fishing, and you can use it in rivers, brooks, and streams. It allows you to read the water temperature accurately and catch the fish you are looking for.

Since it is made from metal, it can easily reach your desired depths. Of course, we did not find just the Celsius reading a problem, and we were surprised that the thermometer kept throwing accurate readings.


  • Durable and strong
  • It comes in a metal housing
  • Portable and easy to carry
  • Easy to use
  • Accurate
  • Stainless steel spring clip and lanyard ring


  • Readings only in Celsius

Tip: Do remember to acclimatize the thermometer before you begin taking the water temperature.

Info Alert: It can be used by beginners and seasoned fly fishermen and they will enjoy the accurate readings to discover the best fly fishing spots.

Perfect Hatch Stream Thermometer

Perfect Hatch Stream Thermometer
45 Reviews
Perfect Hatch Stream Thermometer
  • PORTABLE: Handy pocket clip and o-ring allow you to attach the thermometer to your vest or retractor to avoid accidental loss

Last update on 2023-10-04 / Affiliate links / Images from Amazon Product Advertising API

Get your catch with confidence with the Perfect Hatch Stream Thermometer! With its compact size and lightweight design, this thermometer is easy to carry and attach to your fishing gear. It’s made with a durable rust-resistant steel casing, ensuring its longevity for years to come.

Don’t compromise on accuracy – this thermometer provides quick and reliable water temperature readings so you can make informed fishing decisions. And, with its easy-to-read temperature scale, you won’t have to struggle to figure out what the temperature is.

Perfect Hatch is a proudly American-owned company, sourcing premium products from around the world to bring you the best fishing experience possible.

Product Specs

  • Made from 100% hard and resilient resin
  • Durable
  • Easy to carry
  • Ideal for bass fishing
  • It does not require batteries
  • It uses Liquid Crystal Technology for accurate water temperature readings

Why We Recommend This Product

We were surprised at the construction when we checked out this fishing thermometer. It is made from 100% hard resin, making it virtually indestructible. Also, it provides accurate readings, thanks to Liquid Crystal Technology. It has durable housing and allows you to carry it inside your tackle box without worrying about breakage. The thermometer takes about five to seven minutes to read the water temperature. It is not an electronic thermometer, so it does not use batteries.

The thermometer allows you to find the perfect depth of smallmouth, largemouth, and white bass; hence, it is the perfect choice for bass fishermen. They will love this fishing thermometer. We even liked the materials that were used to make this thermometer. The materials are high-quality.


  • Durable build
  • Conveniently sized
  • Accurate
  • Easy to use
  • It comes with a key ring
  • It does not need batteries


  • Take time to provide readings
  • No carry pouch
  • Not easy to read

Tip: Due to the thermometer’s shape, you can carry it with ease in your pocket or at the end of your fishing rod.

Info Alert: Remember, you need to acclimatize the thermometer to the water before you can get accurate readings from it.

White River Fly Shops Stream Thermometer

This thermometer has a pocket clip and a lanyard ring, so you do not have to worry about getting lost while fishing. You can easily clip it to your vest using the ring or store it in your backpack for later retrieval. It is easy to carry and makes a useful accessory for anglers.

Product Specifications

  • Metal housing
  • 5-3/4” in length
  • Pocket clip and lanyard ring
  • Provides temperature readings in Fahrenheit and Celsius

Why We Recommend This Product

Fly fishermen will love this thermometer. It provides pretty accurate readings in a few minutes. Gauging the water temperature lets fly fishermen predict spawning times, feeding times, and hatches. It is convenient to carry and easy to read. This is a must-have fishing thermometer if you are a beginner fly fisherman.


  • No sharp edges
  • It comes with a lanyard ring and pocket clip
  • Metal housing
  • Displays temperature in Fahrenheit and Celsius
  • Quite accurate
  • Provides fast readings
  • It does not require batteries
  • Durable and long-lasting
  • Offers value for money


  • It can take up to five minutes to provide accurate readings

Tip: Immerse the thermometer in the water and let it stay there for about a minute or two to get a reading. It is advisable to take multiple readings to ensure accuracy. 

Info alert: Acclimatize the thermometer before using it the first time. This will ensure accurate readings when you go fly fishing.

Best Fishing Thermometer Buying Guide

A fishing thermometer, as stated earlier, allows you to check the water temperature to find the best fishing spots. However, do not opt for a fishing thermometer blindly. You need a well-built model that ensures accurate readings and can take the wear and tear of fishing.

Here are a few factors that you need to check for when you are looking to buy the best fishing thermometer.

Purpose of the Thermometer

It is prudent to remember that the water temperature keeps rising with the sun. Hence, fish will not feed when the water is too warm. This will have an adverse effect on your fishing performance. So, opt for a fishing thermometer that can gauge the temperature of the water any time of the day to help you locate fishing spots with just the right water temperature.

Ease of Use

Any fishing thermometer that you choose must be easy to use. Anglers often go for digital thermometers as they feel they are great investments. However, you may need to focus on the technicalities of the thermometer and understand its different features before you can use it to your advantage. This can make digital thermometers more of a nuisance than a help. Also, digital thermometers use batteries, and you will have to keep replacing them.

Furthermore, you cannot submerge digital fishing thermometers completely in the water as they will get ruined. That is why it is best to opt for a traditional thermometer that allows you to get accurate readings and does not require batteries. Typically, you must dangle the thermometer for a few minutes in the water to determine the temperature.

Accuracy of the Thermometer

It goes without saying that the best fishing thermometer is one that offers you accurate readings always. Since you will not be able to test the fishing thermometer, it is best to read reviews from other buyers to find out how accurate the thermometer is. Most thermometers allow you to measure the temperature ranging from 20 to 120 deg Fahrenheit, and they take anywhere from 5 to 7 minutes to throw up a reading.

The durability of the Thermometer

It is best to have a thermometer housed in a metal casing with thick glass. That way, it can take rough use and wear and tear without breaking. Most metal fishing thermometers are extremely durable. Make sure the metal is high-quality and rust-proof, as you will be immersing the thermometer in the water.

Fishing Thermometer Design

While this is not an essential feature, you should ensure that the thermometer design is such that you can read the marking with ease. Some have tiny markings, making it difficult for people to gauge the temperature of the water. Also, a well-designed thermometer is pleasing to the eyes, and if it is brightly colored, you will locate it easily in your gear. 

Attachment Feature

Fishing thermometers are small, and it is very easy to lose them in the water. That is why you should ensure that any fishing thermometer you choose has an attachment feature that lets you connect the thermometer to a lanyard or your fishing rod so that there is no risk of losing it in water or while traveling to your fishing spot.

Size of the Fishing Thermometer

The last thing you need is a heavy and big thermometer. The best fishing thermometer is compact and small enough to carry in your pocket or tackle box. So, it should not be more than a few inches in length. Of course, this can make the markings difficult to read, but if it is designed properly, you should not face a problem.

These are the essential features you should look at when you want to buy the best fishing thermometer. If you follow these buying tips, you should be able to shortlist a few thermometers and then cull the list further until you choose one.


How do you use a fishing thermometer?

To use a fishing thermometer, lower it into the water you’re fishing in until it reaches the desired depth, usually around the bottom of the thermometer. Read the temperature and remove the thermometer from the water.

What type of thermometer is most accurate for water?

A digital thermometer is typically considered the most accurate for measuring water temperature, as it has a fast response time and can accurately display temperature readings to the tenth degree.

How do you use a fly fishing thermometer?

Fly fishing thermometers are typically used to measure the water temperature in a river or stream, which can significantly impact the behavior of fish and the effectiveness of your flies. To use a fly fishing thermometer, immerse it in the water for a few seconds, then read the temperature and note it. This information can be used to determine the type of fly to use and the best fishing conditions.

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About Kristian Ole

Kristian Ole Rørbye, a marine biologist and seasoned angler, shares his fishing adventures and expertise on FishingKris. Join him as he explores the world's waters, one cast at a time.

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