Sea Temperature in Mariehamn in October

Complete information on the sea temperature range in the Baltic Sea in Mariehamn in October. Historical daily data. Climate details for October. Tips on swimming conditions and beach relaxation in Mariehamn. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Mariehamn in October

0°C

MINIMUN

7.5°C

AVERAGE

15°C

MAXIMUM

Historical Data of Water Temperature in October in Mariehamn

Water Temperature Chart for Baltic Sea in Mariehamn in October

Sea Temperature Table in Mariehamn in October Over the Past Years

Day	2024	2023	2022	Average
Oct 1	12°C	13°C	11°C	12.5°C
Oct 2	12°C	13°C	11°C	12.3°C
Oct 3	12°C	13°C	10°C	12.3°C
Oct 4	12°C	13°C	10°C	12.0°C
Oct 5	11°C	13°C	10°C	11.5°C
Oct 6	11°C	13°C	9°C	11.3°C
Oct 7	12°C	12°C	9°C	11.3°C
Oct 8	12°C	12°C	8°C	11.0°C
Oct 9	12°C	12°C	8°C	11.0°C
Oct 10	12°C	12°C	7°C	10.5°C
Oct 11	11°C	12°C	7°C	10.5°C
Oct 12	11°C	12°C	7°C	10.5°C
Oct 13	12°C	12°C	6°C	10.3°C
Oct 14	12°C	11°C	6°C	10.0°C
Oct 15	12°C	11°C	5°C	9.8°C
Oct 16	11°C	11°C	0°C	8.3°C
Oct 17	10°C	11°C	0°C	8.0°C
Oct 18	10°C	11°C	0°C	7.8°C
Oct 19	10°C	10°C	0°C	7.5°C
Oct 20	9°C	10°C	0°C	7.3°C
Oct 21	10°C	10°C	0°C	7.5°C
Oct 22	9°C	10°C	0°C	7.0°C
Oct 23	9°C	10°C	0°C	7.3°C
Oct 24	9°C	10°C	0°C	7.0°C
Oct 25	9°C	10°C	0°C	7.0°C
Oct 26	9°C	9°C	0°C	6.8°C
Oct 27	9°C	9°C	0°C	6.8°C
Oct 28	9°C	9°C	0°C	6.8°C
Oct 29	9°C	10°C	0°C	7.0°C
Oct 30	9°C	9°C	0°C	6.8°C

Mariehamn Climate and Swimming Opportunities in October

7°C

Average Day Air Temperature

3°C

Average Night Air Temperature

74 mm

Precipitation Amount per Month

12 days

Number of Rainy Days

10 hrs

Daylight
per Day

3 hrs

Sunshine
per Day

18 km/h

Average Wind Speed

86%

Average
humidity

Mariehamn lies within the Åland in Finland. The average daytime temperature in Mariehamn in October is 7°C (45°F), while the nighttime average is 3°C (38°F). There are typically 12 rainy days during the month, with a total precipitation of 74 mm (2.9 inches). The daylight duration in October in Mariehamn is 10 hours, with an average of 3 hours of sunshine per day. The average wind speed in October is 18 km/h (11 mph), and the humidity level is around 86%.

The water temperature in Mariehamn in October ranges from 6°C to 12°C (43°F to 54°F). At the beginning of the month, the average temperature is around 12°C (54°F), shifting to 10°C (50°F) by mid-October and reaching 7°C (45°F) in the last ten days. Overall, the average sea temperature in Mariehamn for October is 9°C (48°F). Still too cold for most swimmers. Only short dips in proper gear are advisable.

Sea Temperature in October in Nearby Cities

Frequently Asked Questions About Water Temperatures in October in Mariehamn

What is the sea temperature in Mariehamn in October?

The water temperature in the Baltic Sea in Mariehamn in October ranges from 6°C to 12°C (43°F to 54°F).

Is it possible to swim in the Baltic Sea in Mariehamn in October?

The average sea temperature in Mariehamn in October is 9°C (48°F), and the air temperature is 7°C (45°F), so still too cold for most swimmers. Only short dips in proper gear are advisable.