The weather in Sonsonate in September is hot. The average temperatures are between 22°C and 30°C.
There’s going to be many days of rain during the month of September in Sonsonate.
Sonsonate 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 Sonsonate in September 2025.
If you’re planning to visit Sonsonate in the near future, we highly recommend that you review the 14 day weather forecast for Sonsonate before you arrive.
Temperatures
30° / 22°
Rainy Days
15
Snowy Days
0
Dry Days
15
Rainfall
291
mm
Sun Hours
11.2
Hrs
