Monthly weather forecast and climate
Merimasku, Finland

Weather in January

In Merimasku, Finland, in January, the average water temperature is 0.8°C (33.4°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in January »

Weather in February

Months with the coldest seawater in Merimasku, Finland, are February and March, with an average sea temperature of -0.2°C (31.6°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

Weather in March

Months with the coldest seawater in Merimasku, Finland, are February and March, with an average sea temperature of -0.2°C (31.6°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

Weather in April

In April, the average sea temperature in Merimasku, Finland, is 0.6°C (33.1°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in April »

Weather in May

In May, the average sea temperature in Merimasku, Finland, is 3.8°C (38.8°F). Note: For swimming, this is considered life-threatening and very dangerous. Weather in May »

Weather in June

In Merimasku, Finland, in June, the average water temperature is 8.7°C (47.7°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in June »

Weather in July

In Merimasku, Finland, in July, the average water temperature is 11.9°C (53.4°F). Note: Swimming in 11.9°C (53.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in July »

Weather in August

With an average sea temperature of 12.4°C (54.3°F), August is the month with the warmest seawater in Merimasku, Finland. Note: Swimming in 12.4°C (54.3°F) is considered life-threatening. Weather in August »

Weather in September

In Merimasku, Finland, in September, the average water temperature is 9.8°C (49.6°F). Note: Swimming in 9.8°C (49.6°F) is considered life-threatening. Weather in September »

Weather in October

In Merimasku, Finland, the average seawater temperature in October is 6.2°C (43.2°F). Note: Swimming in 6.2°C (43.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in October »

Weather in November

In Merimasku, Finland, in November, the average water temperature is 4.1°C (39.4°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in November »

Weather in December

In Merimasku, Finland, in December, the average water temperature is 1.8°C (35.2°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in December »
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FAQ

What months are the sea coldest in Merimasku?

February and March, with an average sea temperature of -0.2°C (31.6°F), are months with the coldest seawater in Merimasku.

When are the longest days in Merimasku?

The month with the longest days in Merimasku, Finland, is June, with an average of 18.9h of daylight.

What is the month with the warmest sea water in Merimasku?

With an average sea temperature of 12.4°C (54.3°F), August is the month with the warmest seawater in Merimasku.

What is the month with the shortest days in Merimasku?

With an average of 5.9h of daylight, December has the shortest days of the year in Merimasku, Finland.

Average sea temperature
Merimasku, Finland

Average sea temperature - Merimasku, Finland

The best month for swimming (with the highest average sea temperature) is August (12.4°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.2°C).

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Average daylight
Merimasku, Finland

Average daylight - Merimasku, Finland

The month with the longest days is June (Average daylight: 18.9h).
The month with the shortest days is December (Average daylight: 5.9h).

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