---
title: Measuring Water Temperature in Fishing Using a Radiation Thermometer
description: 釣りをする際、水温計を使用したことはありますか。魚は水温の変化で、大きな行動の変化を起こすと言われています。また、魚ごとに適正水温があり、居つく場所が変わります。放射温度計なら水に付けずに、ある程度距離を保ったまま約１秒で水温が測定できます。狙った魚の活動しやすい温度を把握すれば、的確なアクションを行えます。
image: https://blog.aandd.co.jp/hubfs/AD-5635.png
---

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AD-5611A

## Measuring Water Temperature in Fishing Using a Radiation Thermometer

- July 3 2023
- Riho Kato

![放射温度計 AD-5635](https://blog.aandd.co.jp/hubfs/AD-5635.png)

Have You Considered Water Temperature While Fishing?

Fish are known to be sensitive to even a 1°C change in water temperature, which can trigger significant behavioral changes.

Each type of fish has its preferred water temperature, and their habitat varies accordingly.

Knowing the appropriate water temperature for baitfish and other factors can further increase your chances of success in fishing.

With a water temperature gauge, you can determine the optimal temperature for your target fish's activity and

adjust your actions and bait accordingly, leading to better results.

In particular, a non-contact radiation thermometer allows you to measure water temperature without submerging the thermometer,

maintaining a certain distance. It also offers the advantage of rapid measurement, providing results in approximately one second.

 

![Infrared thermometer fishing](https://blog.aandd.co.jp/hs-fs/hubfs/Infrared%20thermometer%20fishing.png?width=804&height=385&name=Infrared%20thermometer%20fishing.png)

[AD-5617WP is equipped with IP67 waterproof functionality, allowing you to use it with confidence near water or on rainy days.![AD-5617WP](https://blog.aandd.co.jp/hs-fs/hubfs/AD-5617WP(AD5617WP_4981046445825)-1.jpg?width=355&height=131&name=AD-5617WP(AD5617WP_4981046445825)-1.jpg)](https://www.aandd.co.jp/products/electronic/hygrothermograph/infrared_thermometer/ad5617wp/)

 

However, there are two important points to note when measuring water temperature with a radiation thermometer.

①Measuring surface temperature:

**It is important to keep in mind that the radiation thermometer measures the surface temperature of the water.**

(Reference: 　[Measuring Temperature of Water and Glass through Infrared Thermometers](https://blog.aandd.co.jp/en/gpdme/ad-5635/mizu-garasu-ondosokutei?hsLang=en) ）

②Another point to consider is that as the distance increases, the measurement range becomes wider, making it more prone to errors.

（Reference：　[The relationship between the distance & measurement range (D:S)](https://blog.aandd.co.jp/en/gpdme/ad-5635/dshi?hsLang=en) ）

 

The measurement results should be considered as a reference.

To obtain a more accurate temperature reading, it is recommended to perform measurements at a closer distance

and take multiple readings to calculate an average.

 

 

 

 

 

###### Tags:

[AD-5611A](https://blog.aandd.co.jp/en/tag/ad-5611a) [Fishing](https://blog.aandd.co.jp/en/tag/fishing) [Measuring temperature of water](https://blog.aandd.co.jp/en/tag/measuring-temperature-of-water)

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