The area where the Pyrenees meet the Mediterranean is among the sunniest and warmest parts of France with about 300 days of sunshine / year.
The summer (May-September) is warm and dry and the safest period for sun and swimming, while the winter (January-February) has more rainfall and is the coldest, even if the temperature seldom drops below +5°
Even October is warm and pleasant, despite the highest risk of rain.
In March and April the weather is unstable, and everything from rainy spells to summer days with summer temperatures can happen.
November and December are cooler, but the days are sunny and quite warm.