Hamina
Finland
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Hamina, Finland

In Hamina, Finland, in January, the average water temperature is 0.1°C (32.2°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in January »

February is the month with the coldest seawater in Hamina, Finland, with an average sea temperature of -0.5°C (31.1°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

In Hamina, Finland, the average seawater temperature in March is -0.3°C (31.5°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

In Hamina, Finland, the average seawater temperature in April is 1.3°C (34.3°F). Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. Weather in April »

In Hamina, Finland, in May, the average water temperature is 6.8°C (44.2°F). Note: Swimming in 6.8°C (44.2°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 May »

In Hamina, Finland, in June, the average water temperature is 13.6°C (56.5°F). Note: Swimming in 13.6°C (56.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in June »

The month with the warmest seawater in Hamina, Finland, is July, with an average sea temperature of 19.3°C (66.7°F). Note: For most, swimming in 19.3°C (66.7°F) is not an enjoyable activity. Weather in July »

In Hamina, Finland, in August, the average water temperature is 18.8°C (65.8°F). Note: For swimming, a surface water temperature of 18.8°C (65.8°F) is not enjoyable for the majority. Weather in August »

In Hamina, Finland, in September, the average water temperature is 15.1°C (59.2°F). Note: Swimming in 15.1°C (59.2°F) is not enjoyable for the majority. Weather in September »

In October, the average sea temperature in Hamina, Finland, is 10.1°C (50.2°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 November, the average sea temperature in Hamina, Finland, is 6.3°C (43.3°F). Note: Swimming in 6.3°C (43.3°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in November »

In Hamina, Finland, the average seawater temperature in December is 2.9°C (37.2°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in December »

When is the sea coldest in Hamina?

The month with the coldest seawater is February, with an average sea temperature of -0.5°C (31.1°F).

When are the longest days in Hamina?

June has the longest days of the year in Hamina, with an average of 18.9h of daylight.

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

July is the month with the warmest seawater, with an average sea temperature of 19.3°C (66.7°F).

What is the month with the shortest days in Hamina?

With an average of 5.9h of daylight, December has the shortest days of the year in Hamina.
Average sea temperature - Hamina, Finland

The best month for swimming (with the highest average sea temperature) is July (19.3°C).
The coldest month (with the lowest average sea temperature) is February (-0.5°C).

Average daylight - Hamina, Finland

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