Climate and monthly weather forecastÅrstein, Norway
Climate and monthly weather forecast
Weather in January
In Årstein, Norway, the average seawater temperature in January is 4.6°C (40.3°F). Note: In swimming engagements, this poses immediate life-threatening risks. Weather in January »Weather in February
In February, the average sea temperature in Årstein, Norway, is 4°C (39.2°F). Note: In swimming scenarios, this is an immediate danger to life. Breathing becomes uncontrollable instantly, obstructing any form of clear thinking. Weather in February »Weather in March
The month with the coldest seawater in Årstein, Norway, is March, with an average sea temperature of 3.7°C (38.7°F). Note: In swimming, this condition is considered life-threatening and perilous. Weather in March »Weather in April
In April, the average sea temperature in Årstein, Norway, is 4.3°C (39.7°F). Note: In the event of swimming, this state is extremely frigid, dangerous, and poses a significant risk to life. Weather in April »Weather in May
In Årstein, Norway, the average seawater temperature in May is 6.3°C (43.3°F). Note: Swimming in 6.3°C (43.3°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience. Weather in May »Weather in June
In Årstein, Norway, in June, the average water temperature is 9.7°C (49.5°F). Note: Swimming in 9.7°C (49.5°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 June »Weather in July
In July, the average sea temperature in Årstein, Norway, is 12.1°C (53.8°F). Note: Without suitable protection, venturing into 12.1°C (53.8°F) waters cooler than 10°C (50°F) can lead to pronounced cold shock and rapid breaths. Weather in July »Weather in August
With an average sea temperature of 12.3°C (54.1°F), August is the month with the warmest seawater in Årstein, Norway. Note: Being in 12.3°C (54.1°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 August »Weather in September
In Årstein, Norway, in September, the average water temperature is 10.8°C (51.4°F). Note: It is life-risking to swim in 10.8°C (51.4°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance. Weather in September »Weather in October
In Årstein, Norway, in October, the average water temperature is 8.6°C (47.5°F). Note: Swimming in 8.6°C (47.5°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation. Weather in October »Weather in November
In Årstein, Norway, in November, the average water temperature is 7.4°C (45.3°F). Note: Dipping into 7.4°C (45.3°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Weather in November »Weather in December
In Årstein, Norway, the average seawater temperature in December is 6.2°C (43.2°F). Note: Swimming in 6.2°C (43.2°F) is considered life-threatening. Weather in December »Updated: Aug 14, 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
March is the month with the coldest seawater, with an average sea temperature of 3.7°C (38.7°F).
June has the shortest days of the year, with an average of 0h and 0min of daylight.
With an average sea temperature of 12.3°C (54.1°F), August is the month with the warmest seawater.
The month with the longest days is August, with an average of 17h and 36min of daylight.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Årstein, 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.
Average sea temperature
Årstein, Norway
The best month for swimming (with the highest average sea temperature) is August (12.3°C).
The coldest month (with the lowest average sea temperature) is March (3.7°C).
Average daylight
Årstein, Norway
- Average daylight in January:
2h and 30min - Average daylight in February:
7h and 36min - Average daylight in March:
11h and 42min - Average daylight in April:
16h and 0min - Average daylight in May:
14h and 30min - Average daylight in June:
0h and 0min
- Average daylight in July:
7h and 42min - Average daylight in August:
17h and 36min - Average daylight in September:
13h and 18min - Average daylight in October:
9h and 6min - Average daylight in November:
4h and 30min - Average daylight in December:
0h and 6min
The month with the longest days is August (Average daylight: 17h and 36min).
The month with the shortest days is June (Average daylight: 0h and 0min).





