Weather in January
In Langesund, Norway, in January, the average water temperature is 4.3°C (39.7°F). Note: In the water-based sport of swimming, this state is life-threatening and exceedingly dangerous. Weather in January »
Weather in February
In February, the average sea temperature in Langesund, Norway, is 3.4°C (38.1°F). Note: In swimming situations, the extreme cold and danger can lead to fatality. Weather in February »
Weather in March
With an average sea temperature of 2.8°C (37°F), March is the month with the coldest seawater in Langesund, Norway. Note: For swimming, this is considered life-threatening and very dangerous. Weather in March »
Weather in April
In Langesund, Norway, the average seawater temperature in April is 6.6°C (43.9°F). Note: Taking a dip in 6.6°C (43.9°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation. Weather in April »
Weather in May
In May, the average sea temperature in Langesund, Norway, is 11.1°C (52°F). Note: Entering waters of 11.1°C (52°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience. Weather in May »
Weather in June
In Langesund, Norway, the average seawater temperature in June is 15.2°C (59.4°F). Note: The majority of individuals do not enjoy swimming in water that is 15.2°C (59.4°F). Weather in June »
Weather in July
In Langesund, Norway, the average seawater temperature in July is 17.6°C (63.7°F). Note: Swimming is not an enjoyable activity for the majority when the water is at 17.6°C (63.7°F). Weather in July »
Weather in August
With an average sea temperature of 18.3°C (64.9°F), August is the month with the warmest seawater in Langesund, Norway. Note: Swimming in water that is 18.3°C (64.9°F) is not enjoyable for most. Weather in August »
Weather in September
In Langesund, Norway, in September, the average water temperature is 15.8°C (60.4°F). Note: Swimming in water that is 15.8°C (60.4°F) is not enjoyable for most. Weather in September »
Weather in October
In Langesund, Norway, the average seawater temperature in October is 12.2°C (54°F). Note: Being in 12.2°C (54°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 October »
Weather in November
In Langesund, Norway, in November, the average water temperature is 9.2°C (48.6°F). Note: Swimming in 9.2°C (48.6°F) at temperatures under 10°C (50°F) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Weather in November »
Weather in December
In December, the average sea temperature in Langesund, Norway, is 6.3°C (43.3°F). Note: With an efficient thermal swimsuit, one can navigate 6.3°C (43.3°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Weather in December »
[Resources]Frequently asked questions
What is the month with the coldest sea water in Langesund?
The month with the coldest seawater in Langesund, Norway, is March, with an average sea temperature of 2.8°C (37°F).
When are the longest days in Langesund?
With an average of 18h and 24min of daylight, June has the longest days of the year in Langesund.
When is the sea warmest in Langesund?
August is the month with the warmest seawater in Langesund, Norway, with an average sea temperature of 18.3°C (64.9°F).
When is Daylight Saving Time (DST) in Langesund?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Langesund, Norway, 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.
What is the month with the shortest days in Langesund?
December has the shortest days of the year in Langesund, Norway, with an average of 6h and 18min of daylight.
Average sea temperature
Langesund, Norway
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight
Langesund, Norway
- Average daylight in January:
7h and 1min - Average daylight in February:
9h and 2min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 3min - Average daylight in May:
17h and 0min - Average daylight in June:
18h and 2min
- Average daylight in July:
17h and 4min - Average daylight in August:
15h and 2min - Average daylight in September:
12h and 5min - Average daylight in October:
10h and 1min - Average daylight in November:
7h and 5min - Average daylight in December:
6h and 2min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
Langesund, Norway
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