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Juneau — Water Temperature in August

Water Temperature Range

9°C
minimum
12°C
average
14°C
maximum
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day 2026 2025 2024 2023
AUG 1-10°C12°C11°C14°C
AUG 211°C11°C11°C10°C
AUG 311°C11°C11°C11°C
AUG 412°C12°C11°C11°C
AUG 511°C11°C12°C12°C
AUG 611°C12°C11°C13°C
AUG 711°C12°C11°C11°C
AUG 812°C12°C11°C12°C
AUG 912°C12°C12°C12°C
AUG 1011°C13°C12°C12°C
AUG 1111°C12°C12°C12°C
AUG 1211°C12°C11°C12°C
AUG 1312°C11°C12°C12°C
AUG 1412°C11°C12°C11°C
AUG 1511°C12°C11°C12°C
AUG 1611°C13°C12°C12°C
AUG 1713°C11°C12°C11°C
AUG 1813°C11°C12°C10°C
AUG 1912°C11°C11°C11°C
AUG 2011°C12°C11°C11°C
AUG 2112°C11°C12°C11°C
AUG 2212°C11°C12°C11°C
AUG 2311°C12°C12°C11°C
AUG 2410°C12°C11°C11°C
AUG 2510°C12°C11°C12°C
AUG 2611°C12°C12°C12°C
AUG 2711°C11°C12°C11°C
AUG 2811°C12°C11°C11°C
AUG 2910°C11°C11°C11°C
AUG 3010°C12°C12°C11°C
AUG 3111°C11°C11°C11°C

August: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

16°C

Precipitation Amount per Month

190 mm

Number of Rainy Days

15

Daylight per Day

15 hrs

Sunshine per Day

5 hrs

Average Wind Speed

10 km/h

Average Humidity

82%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.

Water Temperature in Nearby Locations