The weather in Chula Vista in September is hot. The average temperatures are between 68°F and 80°F.
You can expect a few rainy days in Chula Vista during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Chula Vista in September 2025.
If you’re planning to visit Chula Vista in the near future, we highly recommend that you review the 14 day weather forecast for Chula Vista before you arrive.
Temperatures
80° / 68°
Rainy Days
1
Snowy Days
0
Dry Days
29
Rainfall
0.59
in
Sun Hours
11.8
Hrs
