Click on a day for an hourly weather forecast
The weather in San Salvador in September is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in San Salvador.
San Salvador should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in San Salvador in September 2025.
If you’re planning to visit San Salvador in the near future, we highly recommend that you review the 14 day weather forecast for San Salvador before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 33° / 23° | 0 | 31 | 0 | 6 mm | Good | San Salvador in January |
| February | 33° / 23° | 1 | 28 | 0 | 12 mm | Good | San Salvador in February |
| March | 33° / 24° | 1 | 30 | 0 | 16 mm | Good | San Salvador in March |
| April | 32° / 25° | 5 | 25 | 0 | 97 mm | Good | San Salvador in April |
| May | 32° / 25° | 13 | 18 | 0 | 337 mm | Ok | San Salvador in May |
| June | 31° / 24° | 14 | 16 | 0 | 377 mm | Ok | San Salvador in June |
| July | 32° / 24° | 12 | 19 | 0 | 233 mm | Ok | San Salvador in July |
| August | 32° / 24° | 15 | 16 | 0 | 357 mm | Ok | San Salvador in August |
| September | 31° / 24° | 17 | 13 | 0 | 383 mm | Ok | San Salvador in September |
| October | 31° / 24° | 14 | 17 | 0 | 385 mm | Ok | San Salvador in October |
| November | 32° / 23° | 4 | 26 | 0 | 82 mm | Good | San Salvador in November |
| December | 33° / 22° | 0 | 31 | 0 | 14 mm | Good | San Salvador in December |