April weather forecastLa Seyne-sur-Mer, France
April
Weather in April
Sea temperature
In La Seyne-sur-Mer, France, the average seawater temperature in April is 14.4°C (57.9°F).Note: If planning to swim in 14.4°C (57.9°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In April, the average length of the day in La Seyne-sur-Mer is 13h and 25min.On the first day of April, sunrise is at 07:17 and sunset at 20:03. On the last day of the month, sunrise is at 06:30 and sunset at 20:36 CEST.
Updated: Feb 8, 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
In La Seyne-sur-Mer, France, in April, the average water temperature is 14.4°C (57.9°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
In La Seyne-sur-Mer, the average day length in April is 13h and 25min.
On the first day of April in La Seyne-sur-Mer, sunrise is at 07:17 and sunset at 20:03. On the last day of the month, sunrise is at 06:30 and sunset at 20:36 CEST.
Average sea temperature in April
La Seyne-sur-Mer, France
- Average sea temperature in April: 14.4°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).
Average daylight in April
La Seyne-sur-Mer, France
- Average daylight in April: 13h and 24min
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).








