June weather forecastHelsinki, Finland
June
Weather in June
June showcases the arrival of summer in full force, presenting Helsinki in its most sun-soaked period. Being one of the warmest months, temperatures escalate to an amiable 18.5°C (65.3°F), rendering pleasant summer afternoons. Daylight, at its maximum, reaches an impressive 18.8h, making room for extended ubiquitous summer activities. Despite an increase in rainfall, the atmosphere remains predominantly dry, maintaining the spirit of summer. The elevated UV index denotes the sharp sunlight intensity, urging the use of sun protection.Temperature
In Helsinki, the average high-temperature in June slightly rises, from a refreshing 14.4°C (57.9°F) in May, to an enjoyable 18.5°C (65.3°F). Helsinki, during the month of June, experiences an average low-temperature of 10.9°C (51.6°F).Rainfall
In Helsinki, in June, during 14 rainfall days, 57mm (2.24") of precipitation is typically accumulated. Throughout the year, there are 182 rainfall days, and 655mm (25.79") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Sea temperature
In Helsinki, in June, the average water temperature is 9°C (48.2°F).Note: Unprotected swimming in 9°C (48.2°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
June has the longest days of the year, with an average of 18h and 48min of daylight.On the first day of June in Helsinki, sunrise is at 04:06 and sunset at 22:29. On the last day of the month, sunrise is at 04:00 and sunset at 22:47 EEST.
Sunshine
The month with the most sunshine is June, with an average of 9.9h of sunshine.UV index
The months with the highest UV index in Helsinki are June and July, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In June, the maximum UV index of 5 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 least 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).
The months with the least 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).
The months with the least 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).
The 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: 18h and 48min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in June: 9h and 54min
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).
Average UV index in June
Helsinki, Finland
- Average UV index in June: 5
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).
