Climate and monthly weather forecastÖstermalm, Sweden
Climate and monthly weather forecast
Weather in January
In January, the average sea temperature in Östermalm, Sweden, is 1.9°C (35.4°F). Note: In relation to swimming, the extreme cold, danger, and potential fatality of this situation are apparent. Weather in January »Weather in February
With an average sea temperature of 1°C (33.8°F), February is the month with the coldest seawater in Östermalm, Sweden. Note: Within the context of swimming, this state is extremely cold, dangerous, and can result in death. Weather in February »Weather in March
In Östermalm, Sweden, in March, the average water temperature is 1.2°C (34.2°F). Note: During swimming activities, this situation is lethal and fraught with danger. Weather in March »Weather in April
In Östermalm, Sweden, the average seawater temperature in April is 2.9°C (37.2°F). Note: When swimming, this condition is immediately life-threatening. Weather in April »Weather in May
In Östermalm, Sweden, the average seawater temperature in May is 7.5°C (45.5°F). Note: Being in 7.5°C (45.5°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 May »Weather in June
In June, the average sea temperature in Östermalm, Sweden, is 13.8°C (56.8°F). Note: Dipping into 13.8°C (56.8°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Weather in June »Weather in July
In July, the average sea temperature in Östermalm, Sweden, is 17.9°C (64.2°F). Note: For most individuals, swimming in 17.9°C (64.2°F) is not a pleasant experience. Weather in July »Weather in August
With an average sea temperature of 18.8°C (65.8°F), August is the month with the warmest seawater in Östermalm, Sweden. Note: For the majority, swimming in 18.8°C (65.8°F) does not offer a pleasant experience. Weather in August »Weather in September
In Östermalm, Sweden, the average seawater temperature in September is 14.9°C (58.8°F). Note: With the appropriate swimsuit, one can swim in 14.9°C (58.8°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. Weather in September »Weather in October
In Östermalm, Sweden, the average seawater temperature in October is 10.2°C (50.4°F). Note: Swimming in 10.2°C (50.4°F) is considered life-threatening. Weather in October »Weather in November
In Östermalm, Sweden, in November, the average water temperature is 7.3°C (45.1°F). Note: Swimming at temperatures less than 10°C (50°F) in 7.3°C (45.1°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. Weather in November »Weather in December
In Östermalm, Sweden, the average seawater temperature in December is 4.8°C (40.6°F). Note: In the sphere of swimming, this is extremely cold and poses life-endangering hazards. Weather in December »Updated: Feb 2, 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
With an average sea temperature of 1°C (33.8°F), February is the month with the coldest seawater in Östermalm, Sweden.
With an average of 18h and 30min of daylight, June has the longest days of the year in Östermalm, Sweden.
With an average sea temperature of 18.8°C (65.8°F), August is the month with the warmest seawater in Östermalm.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
December has the shortest days of the year in Östermalm, Sweden, with an average of 6h and 12min of daylight.
Average sea temperature
Östermalm, Sweden
The best month for swimming (with the highest average sea temperature) is August (18.8°C).
The coldest month (with the lowest average sea temperature) is February (1°C).
Average daylight
Östermalm, Sweden
- Average daylight in January:
7h and 0min - Average daylight in February:
9h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 30min - Average daylight in May:
17h and 0min - Average daylight in June:
18h and 30min
- Average daylight in July:
17h and 42min - Average daylight in August:
15h and 30min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 12min - Average daylight in November:
7h and 42min - Average daylight in December:
6h and 12min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).





