Helsinki
Finland
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Helsinki, Finland

A scenic reflection in the water of the illuminated city of Helsinki in Finland, viewed from the water
A scenic reflection in the water of the illuminated city of Helsinki in Finland, viewed from the water
June, the first month of the summer, in Helsinki, is a comfortable month, with average temperature fluctuating between 10.9°C (51.6°F) and 18.5°C (65.3°F).

Temperature

In June, the average high-temperature slightly increases, from a moderate 14.4°C (57.9°F) in May, to a comfortable 18.5°C (65.3°F). In Helsinki, in June, the average low-temperature is 10.9°C (51.6°F).

Rainfall

In June, in Helsinki, the rain falls for 14 days. Throughout June, 57mm (2.2") of precipitation is accumulated. Throughout the year, there are 182 rainfall days, and 655mm (25.8") of precipitation is accumulated.

Snowfall

In Helsinki, during the entire year, snow aggregates up to 740mm (29.1").

Sea temperature

In Helsinki, in June, the average water temperature is 9°C (48.2°F). 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. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

With an average of 18.8h of daylight, June has the longest days of the year in Helsinki.

Sunshine

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

UV index

Months with the highest UV index are June and July, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
In June, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in June in Helsinki?

In Helsinki, Finland, in June, the average high-temperature is 18.5°C (65.3°F), and the average low-temperature is 10.9°C (51.6°F).

How many days does it rain in June in Helsinki?

In Helsinki, in June, during 14 rainfall days, 57mm (2.2") of precipitation is typically accumulated.

How cold is the water in June in Helsinki?

In June, the average sea temperature is 9°C (48.2°F). Swimming in 9°C (48.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

When are the longest days in Helsinki?

June has the longest days of the year in Helsinki, with an average of 18.8h of daylight.

How many hours of daylight does Helsinki have in June?

The average length of the day in June is 18.8h.

What month has the most sunshine in Helsinki?

The month with the most sunshine in Helsinki is June, with an average of 9.9h of sunshine.

How many hours of sunshine does Helsinki have in June?

In June, the average sunshine is 9.9h.

When is the highest UV index in Helsinki?

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

What is the UV index intensity in June in Helsinki?

In Helsinki, Finland, the average daily maximum UV index in June is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in June - Helsinki, Finland
  • Average high temperature in June: 18.5°C

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).

  • Average low temperature in June: 10.9°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).

Average rainfall in June - Helsinki, Finland
  • Average rainfall in June: 57mm

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

Average rainfall days in June - Helsinki, Finland
  • Average rainfall days in June: 14 days

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

Average snowfall in June - Helsinki, Finland
  • Average snowfall in June: 0mm

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

Average sea temperature in June - Helsinki, Finland
  • Average sea temperature in June: 9°C

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

Average daylight in June / Average sunshine in June - Helsinki, Finland
  • Average daylight in June: 18.8h

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

  • Average sunshine in June: 9.9h

The month with most sunshine is June (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 0.9h).

Average UV index in June - Helsinki, Finland
  • Average UV index in June: 5

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).