Monthly weather forecast and climate
Mariehamn Airport, Finland

Weather in January

January, the same as December, in Mariehamn Airport, Finland, is another subzero cold winter month, with average temperature varying between -1°C (30.2°F) and -7°C (19.4°F). In Mariehamn Airport, the average high-temperature is almost the same as in December - a subzero cold -1°C (30.2°F). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Mariehamn Airport, Finland, with average temperature varying between -2°C (28.4°F) and -8°C (17.6°F). February is the coldest month, with an average high-temperature of -2°C (28.4°F) and an average low-temperature of -8°C (17.6°F). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Mariehamn Airport, Finland, with temperature in the range of an average low of -5°C (23°F) and an average high of 1°C (33.8°F). In Mariehamn Airport, Finland, the average high-temperature slightly increases, from a freezing cold -2°C (28.4°F) in February, to a cold 1°C (33.8°F). Weather in March »

Weather in April

April is a chilly spring month in Mariehamn Airport, Finland, with average temperature ranging between min -1°C (30.2°F) and max 6°C (42.8°F). In Mariehamn Airport, the average high-temperature rises, from a cold 1°C (33.8°F) in March, to a chilly 6°C (42.8°F). Weather in April »

Weather in May

May, the last month of the spring, in Mariehamn Airport, is a cool month, with average temperature fluctuating between 4°C (39.2°F) and 12°C (53.6°F). In May, the average high-temperature increases, from a frosty 6°C (42.8°F) in April, to a cool 12°C (53.6°F). Weather in May »

Weather in June

The first month of the summer, June, is an enjoyable month in Mariehamn Airport, Finland, with average temperature varying between 17°C (62.6°F) and 9°C (48.2°F). In June, the average high-temperature rises, from a cool 12°C (53.6°F) in May, to an enjoyable 17°C (62.6°F). Weather in June »

Weather in July

July, the same as June, is another enjoyable summer month in Mariehamn Airport, Finland, with average temperature varying between 12°C (53.6°F) and 19°C (66.2°F). With an average high-temperature of 19°C (66.2°F) and an average low-temperature of 12°C (53.6°F), July is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also an enjoyable month in Mariehamn Airport, Finland, with temperature in the range of an average high of 18°C (64.4°F) and an average low of 11°C (51.8°F). In Mariehamn Airport, Finland, the average high-temperature in August is almost the same as in July - a still enjoyable 18°C (64.4°F). Weather in August »

Weather in September

September, the first month of the autumn, in Mariehamn Airport, is also a moderate month, with average temperature fluctuating between 14°C (57.2°F) and 7°C (44.6°F). In Mariehamn Airport, Finland, the average high-temperature marginally drops, from an enjoyable 18°C (64.4°F) in August, to a moderate 14°C (57.2°F). Weather in September »

Weather in October

October, like September, is a frosty autumn month in Mariehamn Airport, Finland, with average temperature varying between 9°C (48.2°F) and 4°C (39.2°F). In Mariehamn Airport, the average high-temperature drops, from a moderate 14°C (57.2°F) in September, to a chilly 9°C (48.2°F). Weather in October »

Weather in November

November, the last month of the autumn, in Mariehamn Airport, is another cold month, with average temperature fluctuating between 5°C (41°F) and 0°C (32°F). In Mariehamn Airport, the average high-temperature slightly decreases, from a chilly 9°C (48.2°F) in October, to a wintry 5°C (41°F). Weather in November »

Weather in December

December, the first month of the winter, in Mariehamn Airport, is still a cold month, with average temperature varying between -4°C (24.8°F) and 1°C (33.8°F). In Mariehamn Airport, the average high-temperature marginally drops, from 5°C (41°F) in November, to a still cold 1°C (33.8°F). Weather in December »
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FAQ

How much does it rain in Mariehamn Airport?

Throughout the year, in Mariehamn Airport, there are 176 rainfall days, and 508mm (20") of precipitation is accumulated.

What is the month with the least sunshine in Mariehamn Airport?

January, February, November and December, with an average of 1h of sunshine, are months with the least sunshine in Mariehamn Airport, Finland.

What is the month with the lowest UV index in Mariehamn Airport?

January, February, November and December, with an average maximum UV index of 0, are months with the lowest UV index.

What is the coldest month in Mariehamn Airport?

With an average high-temperature of -2°C (28.4°F) and an average low-temperature of -8°C (17.6°F), February is the coldest month in Mariehamn Airport.

What is the driest month in Mariehamn Airport?

February and March are months with the least rain in Mariehamn Airport when the rain falls for 15 days and typically aggregates up to 25mm (0.98") of rain.

What are the months with the coldest sea water in Mariehamn Airport?

February and March, with an average sea temperature of 1°C (33.8°F), are months with the coldest seawater in Mariehamn Airport.

When are the longest days in Mariehamn Airport?

The month with the longest days in Mariehamn Airport is June, with an average of 18.8h of daylight.

What month has the most sunshine in Mariehamn Airport?

With an average of 9h of sunshine, June has the most sunshine of the year in Mariehamn Airport.

What is the month with the highest UV index in Mariehamn Airport?

June and July, with an average maximum UV index of 5, are months with the highest UV index in Mariehamn Airport, Finland.

What is the warmest month in Mariehamn Airport?

The warmest month in Mariehamn Airport is July, with an average high-temperature of 19°C (66.2°F) and an average low-temperature of 12°C (53.6°F).

What is the wettest month in Mariehamn Airport?

August is the month with the most rainfall in Mariehamn Airport, Finland. Rain falls for 14 days and accumulates 64mm (2.52") of precipitation.

When is the sea warmest in Mariehamn Airport?

August is the month with the warmest seawater, with an average sea temperature of 16°C (60.8°F).

What is the month with the shortest days in Mariehamn Airport?

With an average of 6h of daylight, December has the shortest days of the year in Mariehamn Airport.

Average rainfall
Mariehamn Airport, Finland

Average rainfall - Mariehamn Airport, Finland

The wettest month (with the highest rainfall) is August (64mm).
The driest months (with the least rainfall) are February and March (25mm).

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Average rainfall days
Mariehamn Airport, Finland

Average rainfall days - Mariehamn Airport, Finland

The month with the highest number of rainy days is January (20 days).
Months with the least rainy days are May and June (10 days).

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Average sea temperature
Mariehamn Airport, Finland

Average sea temperature - Mariehamn Airport, Finland

The best month for swimming (with the highest average sea temperature) is August (16°C).
The coldest months (with the lowest average sea temperature) are February and March (1°C).

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Average daylight / Average sunshine
Mariehamn Airport, Finland

Average daylight / Average sunshine - Mariehamn Airport, Finland

The month with the longest days is June (Average daylight: 18.8h).
The month with the shortest days is December (Average daylight: 6h).

The month with the most sunshine is June (Average sunshine: 9h).
Months with the least sunshine are January, February, November and December (Average sunshine: 1).

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Average UV index
Mariehamn Airport, Finland

Average UV index - Mariehamn Airport, Finland

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).

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