Climate and monthly weather forecastPernå, Finland
Climate and monthly weather forecast
Weather in January
In January, the average sea temperature in Pernå, Finland, is 0.5°C (32.9°F). Note: With respect to swimming, this presents an immediate life risk. Weather in January »Weather in February
February and March, with an average sea temperature of -0.1°C (31.8°F), are months with the coldest seawater in Pernå, Finland. Note: In the context of swimming, this situation is viewed as life-threatening and poses serious risks. Weather in February »Weather in March
February and March, with an average sea temperature of -0.1°C (31.8°F), are months with the coldest seawater in Pernå, Finland. Note: In the sphere of swimming, this is extremely cold and poses life-endangering hazards. Weather in March »Weather in April
In Pernå, Finland, the average seawater temperature in April is 1.6°C (34.9°F). Note: During the act of swimming, this is a direct threat to life. Breathing becomes erratic and cognitive abilities decline rapidly. Weather in April »Weather in May
In Pernå, Finland, the average seawater temperature in May is 7.1°C (44.8°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 May »Weather in June
In June, the average sea temperature in Pernå, Finland, is 13.3°C (55.9°F). Note: Beware of 13.3°C (55.9°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health. Weather in June »Weather in July
The month with the warmest seawater in Pernå, Finland, is July, with an average sea temperature of 18.8°C (65.8°F). Note: The majority of individuals find swimming in 18.8°C (65.8°F) to be unenjoyable. Weather in July »Weather in August
In Pernå, Finland, in August, the average water temperature is 18.6°C (65.5°F). Note: Swimming is not a pleasant activity for most when the water temperature is 18.6°C (65.5°F). Weather in August »Weather in September
In Pernå, Finland, in September, the average water temperature is 14.9°C (58.8°F). Note: Being in 14.9°C (58.8°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance. Weather in September »Weather in October
In Pernå, Finland, in October, the average water temperature is 10.3°C (50.5°F). Note: Immersing oneself in 10.3°C (50.5°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped. Weather in October »Weather in November
In Pernå, Finland, the average seawater temperature in November is 6.7°C (44.1°F). Note: Swimming in 6.7°C (44.1°F) feels unbearing at 13°C (55.4°F) and can be life-risking below 10°C (50°F), causing breathing issues and cold shock, depending on a person's capacity. Weather in November »Weather in December
In Pernå, Finland, the average seawater temperature in December is 3.5°C (38.3°F). Note: In the realm of swimming, this state is extremely cold, treacherous, and life-threatening. Weather in December »Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
February and March, with an average sea temperature of -0.1°C (31.8°F), are months with the coldest seawater.
With an average of 18h and 54min of daylight, June has the longest days of the year in Pernå.
With an average sea temperature of 18.8°C (65.8°F), July is the month with the warmest seawater in Pernå.
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Pernå, Finland, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.
December has the shortest days of the year, with an average of 5h and 54min of daylight.
Average sea temperature
Pernå, Finland
The best month for swimming (with the highest average sea temperature) is July (18.8°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.1°C).
Average daylight
Pernå, Finland
- Average daylight in January:
6h and 48min - Average daylight in February:
9h and 6min - Average daylight in March:
11h and 48min - Average daylight in April:
14h and 42min - Average daylight in May:
17h and 18min - Average daylight in June:
18h and 54min
- Average daylight in July:
18h and 6min - Average daylight in August:
15h and 36min - Average daylight in September:
12h and 54min - Average daylight in October:
10h and 6min - Average daylight in November:
7h and 30min - Average daylight in December:
5h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).





