Climate and monthly weather forecast
Helsinki, Finland

A scenic reflection in the water of the illuminated city of Helsinki in Finland
A scenic reflection in the water of the illuminated city of Helsinki in Finland

Weather in January

January, like December, is a freezing cold winter month in Helsinki, Finland, with an average temperature varying between -6.5°C (20.3°F) and -1.3°C (29.7°F). In January, the average high-temperature is almost the same as in December - a freezing cold -1.3°C (29.7°F). Weather in January »

Weather in February

February, the last month of the winter in Helsinki, is also a subzero cold month, with temperature in the range of an average high of -1.9°C (28.6°F) and an average low of -7.4°C (18.7°F). With an average high-temperature of -1.9°C (28.6°F) and an average low-temperature of -7.4°C (18.7°F), February is the coldest month. Weather in February »

Weather in March

March, the first month of the spring in Helsinki, is a wintry month, with an average temperature varying between 1.6°C (34.9°F) and -4.1°C (24.6°F). In Helsinki, Finland, the average high-temperature in March marginally rises from a freezing cold -1.9°C (28.6°F) in February to a wintry 1.6°C (34.9°F). Weather in March »

Weather in April

April is a frosty spring month in Helsinki, Finland, with an average temperature fluctuating between 7.6°C (45.7°F) and 0.8°C (33.4°F). In Helsinki, the average high-temperature in April increases from a wintry 1.6°C (34.9°F) in March to a frosty 7.6°C (45.7°F). Weather in April »

Weather in May

The last month of the spring, May, is a mild month in Helsinki, Finland, with temperature in the range of an average low of 6.3°C (43.3°F) and an average high of 14.4°C (57.9°F). In Helsinki, the average high-temperature in May increases from a frosty 7.6°C (45.7°F) in April to a mild 14.4°C (57.9°F). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Helsinki, Finland, with temperature in the range of an average high of 18.5°C (65.3°F) and an average low of 10.9°C (51.6°F). In Helsinki, the average high-temperature in June marginally rises from a mild 14.4°C (57.9°F) in May to an enjoyable 18.5°C (65.3°F). Weather in June »

Weather in July

July is an agreeable summer month in Helsinki, Finland, with an average temperature fluctuating between 21.5°C (70.7°F) and 14.2°C (57.6°F). The warmest month is July, with an average high-temperature of 21.5°C (70.7°F) and an average low-temperature of 14.2°C (57.6°F). Weather in July »

Weather in August

August, the last month of the summer in Helsinki, is another comfortable month, with temperature in the range of an average low of 13.1°C (55.6°F) and an average high of 19.8°C (67.6°F). In August, the average high-temperature is practically the same as in July - a comfortable 19.8°C (67.6°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a mild month in Helsinki, Finland, with an average temperature fluctuating between 14.6°C (58.3°F) and 8.7°C (47.7°F). In September, the average high-temperature drops from a comfortable 19.8°C (67.6°F) in August to a moderate 14.6°C (58.3°F). Weather in September »

Weather in October

October, the same as September, in Helsinki, Finland, is a frosty autumn month, with an average temperature varying between 4.3°C (39.7°F) and 9°C (48.2°F). In October, the average high-temperature drops from a mild 14.6°C (58.3°F) in September to a frosty 9°C (48.2°F). Weather in October »

Weather in November

November, the last month of the autumn in Helsinki, is another cold month, with an average temperature varying between -0.6°C (30.9°F) and 3.7°C (38.7°F). In Helsinki, the average high-temperature in November drops from a chilly 9°C (48.2°F) in October to a wintry 3.7°C (38.7°F). Weather in November »

Weather in December

December, the first month of the winter in Helsinki, is also a wintry month, with an average temperature varying between -4.5°C (23.9°F) and 0.5°C (32.9°F). In Helsinki, the average high-temperature in December slightly decreases from a cold 3.7°C (38.7°F) in November to a still wintry 0.5°C (32.9°F). Weather in December »
[Resources]

FAQ

How much does it rain in Helsinki?

In Helsinki, during the entire year, the rain falls for 182 days and collects up to 655mm (25.79") of precipitation.

When does it snow in Helsinki?

Months with snowfall are January through March, November and December.

How much does it snow in Helsinki?

Throughout the year, 740mm (29.13") of snow is accumulated.

When is the lowest UV index in Helsinki?

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

What is the coldest month in Helsinki?

With an average high-temperature of -1.9°C (28.6°F) and an average low-temperature of -7.4°C (18.7°F), February is the coldest month in Helsinki.

What is the snowiest month in Helsinki?

February is the month with the most snowfall in Helsinki, Finland, with 230mm (9.06") of accumulated snow.

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

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

When is Daylight Saving Time (DST) in Helsinki?

On Sunday, 27. March 2022, at 03:00, Daylight Saving Time starts, and the time zone changes from EET to EEST. Daylight Saving Time ends on Sunday, 30. October 2022, at 04:00, and the time zone reverts from EEST to EET.

What is the driest month in Helsinki?

April is the month with the least rainfall. Rain falls for 11 days and accumulates 32mm (1.26") of precipitation.

When it does not snow in Helsinki?

In Helsinki, snow does not fall in April through October.

When are the longest days in Helsinki?

With an average of 18h and 47min of daylight, June has the longest days of the year in Helsinki, Finland.

What month has the most sunshine in Helsinki?

June has the most sunshine of the year, with an average of 9.9h of sunshine.

When is the highest UV index in Helsinki?

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

What is the warmest month in Helsinki?

The warmest month in Helsinki, Finland, is July, with an average high-temperature of 21.5°C (70.7°F) and an average low-temperature of 14.2°C (57.6°F).

What is the rainiest month in Helsinki?

The month with the most rainfall is August, when the rain falls for 15 days and typically aggregates up to 80mm (3.15") of precipitation.

When is the sea warmest in Helsinki?

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

What is the month with the shortest days in Helsinki?

December has the shortest days of the year in Helsinki, Finland, with an average of 5h and 59min of daylight.

What is the month with the least sunshine in Helsinki?

With an average of 0.9h of sunshine, December has the least sunshine of the year in Helsinki, Finland.

Average temperature
Helsinki, Finland

Average temperature - Helsinki, Finland

The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is February (-1.9°C).

The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (-7.4°C).

[Resources]

Average rainfall
Helsinki, Finland

Average rainfall - Helsinki, Finland

The wettest month (with the highest rainfall) is August (80mm).
The driest month (with the least rainfall) is April (32mm).

[Resources]

Average rainfall days
Helsinki, Finland

Average rainfall days - Helsinki, Finland

The month with the highest number of rainy days is December (20 days).
The months with the least rainy days are April and May (11 days).

[Resources]

Average snowfall
Helsinki, Finland

Average snowfall - Helsinki, Finland

The month with the highest snowfall is February (230mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

[Resources]

Average sea temperature
Helsinki, Finland

Average sea temperature - Helsinki, 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).

[Resources]

Average daylight / Average sunshine
Helsinki, Finland

Average daylight / Average sunshine - Helsinki, Finland

The month with the longest days is June (Average daylight: 18h and 47min).
The month with the shortest days is December (Average daylight: 5h and 59min).

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 0h and 54min).

[Resources]

Average UV index
Helsinki, Finland

Average UV index - Helsinki, Finland

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location