Mariehamn — Water Temperature in June

Water Temperature Range

7°C

minimum

13°C

average

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

June: Climate and Swimming Opportunities

Average Night Air Temperature

10°C

Average Day Air Temperature

19°C

Precipitation Amount per Month

52 mm

Number of Rainy Days

Daylight per Day

18 hrs

Sunshine per Day

9 hrs

Average Wind Speed

14 km/h

Average Humidity

67%

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.