Merimasku
Finland
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Merimasku, Finland

In January, the average sea temperature in Merimasku, Finland, is 0.8°C (33.4°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in January »
February and March, with an average sea temperature of -0.2°C (31.6°F), are months with the coldest seawater in Merimasku, Finland. Note: For swimming, this is considered life-threatening and very dangerous. Weather in February »

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

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

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

In June, the average sea temperature in Merimasku, Finland, is 8.7°C (47.7°F). Note: Swimming in 8.7°C (47.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in June »

In July, the average sea temperature in Merimasku, Finland, is 11.9°C (53.4°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 July »

The month with the warmest seawater in Merimasku, Finland, is August, with an average sea temperature of 12.4°C (54.3°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 August »

In September, the average sea temperature in Merimasku, Finland, is 9.8°C (49.6°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 September »

In October, the average sea temperature in Merimasku, Finland, is 6.2°C (43.2°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 October »

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

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

What are the months with the coldest sea water in Merimasku?

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

When are the longest days in Merimasku?

With an average of 18.9h of daylight, June has the longest days of the year.

When is the sea warmest in Merimasku?

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

What is the month with the shortest days in Merimasku?

The month with the shortest days is December, with an average of 5.9h of daylight.
Average sea temperature - Merimasku, Finland

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

Average daylight - Merimasku, Finland

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