Harstad — Water Temperature in July

Water Temperature Range

9°C

minimum

11°C

average

15°C

maximum

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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	2025	2024	2023	2022
JUL 1	11°C	9°C	10°C	11°C
JUL 2	10°C	9°C	9°C	10°C
JUL 3	10°C	10°C	10°C	10°C
JUL 4	11°C	11°C	10°C	10°C
JUL 5	11°C	11°C	11°C	11°C
JUL 6	11°C	10°C	12°C	11°C
JUL 7	10°C	10°C	11°C	11°C
JUL 8	11°C	11°C	12°C	11°C
JUL 9	12°C	11°C	12°C	11°C
JUL 10	11°C	10°C	12°C	11°C
JUL 11	11°C	10°C	12°C	11°C
JUL 12	11°C	11°C	12°C	11°C
JUL 13	11°C	11°C	13°C	12°C
JUL 14	12°C	11°C	12°C	12°C
JUL 15	12°C	11°C	12°C	12°C
JUL 16	12°C	10°C	12°C	11°C
JUL 17	12°C	11°C	12°C	12°C
JUL 18	12°C	11°C	12°C	12°C
JUL 19	12°C	12°C	11°C	12°C
JUL 20	11°C	12°C	11°C	13°C
JUL 21	12°C	12°C	12°C	13°C
JUL 22	12°C	12°C	12°C	12°C
JUL 23	12°C	12°C	12°C	12°C
JUL 24	12°C	11°C	11°C	12°C
JUL 25	12°C	13°C	11°C	12°C
JUL 26	12°C	12°C	11°C	12°C
JUL 27	12°C	12°C	12°C	12°C
JUL 28	12°C	13°C	12°C	12°C
JUL 29	11°C	12°C	11°C	12°C
JUL 30	11°C	12°C	11°C	12°C
JUL 31	13°C	13°C	11°C	13°C

July: Climate and Swimming Opportunities

Average Night Air Temperature

8°C

Average Day Air Temperature

15°C

Precipitation Amount per Month

75 mm

Number of Rainy Days

Daylight per Day

24 hrs

Sunshine per Day

7 hrs

Average Wind Speed

13 km/h

Average Humidity

78%

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.