Weather in January
In Bretteville, France, the average seawater temperature in January is 9.8°C (49.6°F). Note: Beware of 9.8°C (49.6°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 January »
Weather in February
In Bretteville, France, the average seawater temperature in February is 9.3°C (48.7°F). Note: To swim in 9.3°C (48.7°F) at less than 10°C (50°F), ensure you're well-protected. Weather in February »
Weather in March
March is the month with the coldest seawater in Bretteville, France, with an average sea temperature of 9.1°C (48.4°F). Note: With an efficient thermal swimsuit, one can navigate 9.1°C (48.4°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Weather in March »
Weather in April
In April, the average sea temperature in Bretteville, France, is 10.2°C (50.4°F). Note: Diving into 10.2°C (50.4°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Weather in April »
Weather in May
In Bretteville, France, in May, the average water temperature is 11.9°C (53.4°F). Note: It is life-risking to swim in 11.9°C (53.4°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 May »
Weather in June
In June, the average sea temperature in Bretteville, France, is 13.9°C (57°F). Note: Swimming in 13.9°C (57°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 Bretteville, France, the average seawater temperature in July is 15.8°C (60.4°F). Note: Most people do not enjoy swimming in water of 15.8°C (60.4°F). Weather in July »
Weather in August
In Bretteville, France, in August, the average water temperature is 17.3°C (63.1°F). Note: A majority do not enjoy swimming in water at 17.3°C (63.1°F). Weather in August »
Weather in September
September is the month with the warmest seawater in Bretteville, France, with an average sea temperature of 17.7°C (63.9°F). Note: For the majority, swimming in water with a temperature of 17.7°C (63.9°F) is not enjoyable. Weather in September »
Weather in October
In Bretteville, France, the average seawater temperature in October is 16.4°C (61.5°F). Note: For most people, a water temperature of 16.4°C (61.5°F) is not conducive to enjoyable swimming. Weather in October »
Weather in November
In Bretteville, France, the average seawater temperature in November is 14.4°C (57.9°F). Note: Swimming in 14.4°C (57.9°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation. Weather in November »
Weather in December
In Bretteville, France, the average seawater temperature in December is 11.8°C (53.2°F). Note: Swimming in 11.8°C (53.2°F) is considered dangerous. 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
When is the sea coldest in Bretteville?
The month with the coldest seawater is March, with an average sea temperature of 9.1°C (48.4°F).
When are the longest days in Bretteville?
With an average of 16h and 12min of daylight, June has the longest days of the year in Bretteville.
What month is the sea warmest in Bretteville?
September is the month with the warmest seawater in Bretteville, with an average sea temperature of 17.7°C (63.9°F).
When is Daylight Saving Time (DST) in Bretteville?
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 Bretteville?
With an average of 8h and 12min of daylight, December has the shortest days of the year in Bretteville, France.
Average sea temperature
Bretteville, France
The best month for swimming (with the highest average sea temperature) is September (17.7°C).
The coldest month (with the lowest average sea temperature) is March (9.1°C).
Average daylight
Bretteville, France
- Average daylight in January:
8h and 4min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 5min - 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 1min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
Bretteville, France
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