Click on a day for an hourly weather forecast
The weather in San Sebastian in December is hot. The average temperatures are between 20°C and 21°C.
You can expect a few rainy days in San Sebastian during December, but usually the weather is comfortable in December.
Our weather forecast can give you a great sense of what weather to expect in San Sebastian in December 2024.
If you’re planning to visit San Sebastian in the near future, we highly recommend that you review the 14 day weather forecast for San Sebastian before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 20° / 18° | 1 | 30 | 0 | 16 mm | Good | San Sebastian in January |
| February | 19° / 18° | 1 | 27 | 0 | 17 mm | Good | San Sebastian in February |
| March | 19° / 18° | 0 | 31 | 0 | 9 mm | Good | San Sebastian in March |
| April | 20° / 18° | 0 | 30 | 0 | 8 mm | Good | San Sebastian in April |
| May | 21° / 19° | 0 | 31 | 0 | 1 mm | Good | San Sebastian in May |
| June | 22° / 21° | 0 | 30 | 0 | 1 mm | Good | San Sebastian in June |
| July | 24° / 22° | 0 | 31 | 0 | 0 mm | Perfect | San Sebastian in July |
| August | 25° / 23° | 0 | 31 | 0 | 5 mm | Perfect | San Sebastian in August |
| September | 25° / 23° | 0 | 30 | 0 | 7 mm | Perfect | San Sebastian in September |
| October | 24° / 23° | 1 | 30 | 0 | 22 mm | Perfect | San Sebastian in October |
| November | 22° / 21° | 1 | 29 | 0 | 25 mm | Good | San Sebastian in November |
| December | 21° / 20° | 1 | 30 | 0 | 23 mm | Good | San Sebastian in December |