Weather in January
In January, the average sea temperature in Roscanvel, France, is 11.2°C (52.2°F). Note: In 11.2°C (52.2°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F). Weather in January »
Weather in February
In Roscanvel, France, in February, the average water temperature is 10.5°C (50.9°F). Note: Navigating the 10.5°C (50.9°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina. Weather in February »
Weather in March
March is the month with the coldest seawater in Roscanvel, France, with an average sea temperature of 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 March »
Weather in April
In Roscanvel, France, the average seawater temperature in April is 11.3°C (52.3°F). Note: Caution: 11.3°C (52.3°F) temperatures below 10°C (50°F) during swimming can result in intense cold shock and quickened breathing. Weather in April »
Weather in May
In Roscanvel, France, the average seawater temperature in May is 13.1°C (55.6°F). Note: Swimming in 13.1°C (55.6°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 May »
Weather in June
In Roscanvel, France, in June, the average water temperature is 14.7°C (58.5°F). Note: Swimming in 14.7°C (58.5°F) at temperatures under 10°C (50°F) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Weather in June »
Weather in July
In Roscanvel, France, the average seawater temperature in July is 16.2°C (61.2°F). Note: The majority of people do not enjoy swimming in 16.2°C (61.2°F). Weather in July »
Weather in August
August is the month with the warmest seawater in Roscanvel, France, with an average sea temperature of 16.9°C (62.4°F). Note: The majority of people find swimming in 16.9°C (62.4°F) unenjoyable. Weather in August »
Weather in September
In Roscanvel, France, the average seawater temperature in September is 16.3°C (61.3°F). Note: For most, swimming in 16.3°C (61.3°F) is not an enjoyable activity. Weather in September »
Weather in October
In Roscanvel, France, the average seawater temperature in October is 15.1°C (59.2°F). Note: The majority of people find swimming in 15.1°C (59.2°F) unenjoyable. Weather in October »
Weather in November
In Roscanvel, France, in November, the average water temperature is 14.3°C (57.7°F). Note: Staying in 14.3°C (57.7°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance. Weather in November »
Weather in December
In Roscanvel, France, in December, the average water temperature is 12.8°C (55°F). Note: It is life-risking to swim in 12.8°C (55°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 December »
[Resources]Frequently asked questions
What month is the sea coldest in Roscanvel?
With an average sea temperature of 10.3°C (50.5°F), March is the month with the coldest seawater.
When are the longest days in Roscanvel?
June has the longest days of the year in Roscanvel, France, with an average of 16h and 0min of daylight.
What is the month with the warmest sea water in Roscanvel?
August is the month with the warmest seawater in Roscanvel, France, with an average sea temperature of 16.9°C (62.4°F).
When is Daylight Saving Time (DST) in Roscanvel?
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.
What is the month with the shortest days in Roscanvel?
With an average of 8h and 24min of daylight, December has the shortest days of the year in Roscanvel.
Average sea temperature
Roscanvel, France
The best month for swimming (with the highest average sea temperature) is August (16.9°C).
The coldest month (with the lowest average sea temperature) is March (10.3°C).
Average daylight
Roscanvel, France
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
Roscanvel, France
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