Keminmaa — Water Temperature in May

Water Temperature Range

-2°C

minimum

1°C

average

7°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
MAY 1	0°C	0°C	0°C	0°C
MAY 2	0°C	0°C	0°C	0°C
MAY 3	0°C	0°C	0°C	0°C
MAY 4	0°C	0°C	1°C	0°C
MAY 5	0°C	0°C	0°C	0°C
MAY 6	0°C	0°C	0°C	0°C
MAY 7	0°C	0°C	1°C	0°C
MAY 8	0°C	0°C	0°C	0°C
MAY 9	0°C	0°C	1°C	0°C
MAY 10	1°C	0°C	1°C	0°C
MAY 11	1°C	0°C	1°C	0°C
MAY 12	0°C	0°C	0°C	0°C
MAY 13	1°C	0°C	1°C	0°C
MAY 14	1°C	0°C	1°C	0°C
MAY 15	1°C	1°C	1°C	0°C
MAY 16	2°C	1°C	1°C	1°C
MAY 17	2°C	2°C	2°C	0°C
MAY 18	2°C	2°C	2°C	-1°C
MAY 19	1°C	2°C	1°C	-2°C
MAY 20	2°C	3°C	1°C	-1°C
MAY 21	2°C	3°C	3°C	-1°C
MAY 22	2°C	3°C	2°C	-1°C
MAY 23	2°C	3°C	2°C	-1°C
MAY 24	2°C	3°C	2°C	-1°C
MAY 25	2°C	3°C	3°C	0°C
MAY 26	3°C	4°C	5°C	-1°C
MAY 27	3°C	3°C	5°C	0°C
MAY 28	4°C	5°C	5°C	0°C
MAY 29	4°C	5°C	5°C	0°C
MAY 30	3°C	4°C	5°C	0°C
MAY 31	4°C	6°C	6°C	0°C

May: Climate and Swimming Opportunities

Average Night Air Temperature

4°C

Average Day Air Temperature

15°C

Precipitation Amount per Month

44 mm

Number of Rainy Days

Daylight per Day

18 hrs

Sunshine per Day

7 hrs

Average Wind Speed

10 km/h

Average Humidity

65%

At such water and air temperatures, swimming feels icy and can be a shock to the body. If you go in at all, keep it extremely short and warm up immediately afterward.