January weather forecast
La Seyne-sur-Mer, France

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Weather in January

Sea temperature

In La Seyne-sur-Mer, France, in January, the average water temperature is 13.4°C (56.1°F).
Note: Taking a dip in 13.4°C (56.1°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation.

Daylight

In La Seyne-sur-Mer, the average length of the day in January is 9h and 25min.
On the first day of the month, sunrise is at 08:08 and sunset at 17:11. On the last day of January, sunrise is at 07:53 and sunset at 17:46 CET.
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Frequently asked questions

What is the water temperature in January in La Seyne-sur-Mer?

In January, the average sea temperature in La Seyne-sur-Mer is 13.4°C (56.1°F). Swimming in 13.4°C (56.1°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in January in La Seyne-sur-Mer?

In La Seyne-sur-Mer, France, the average day length in January is 9h and 25min.

When are sunrise and sunset in January in La Seyne-sur-Mer?

On the first day of January in La Seyne-sur-Mer, France, sunrise is at 08:08 and sunset at 17:11. On the last day of the month, sunrise is at 07:53 and sunset at 17:46 CET.

Average sea temperature in January
La Seyne-sur-Mer, France

Average sea temperature in January - La Seyne-sur-Mer, France
  • Average sea temperature in January: 13.4°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is February (13°C).

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Average daylight in January
La Seyne-sur-Mer, France

Average daylight in January - La Seyne-sur-Mer, France
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

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La Seyne-sur-Mer, France

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