Vista Weather in September

What's the weather like in Vista (California) in September 2025?

The climate in Vista during September can be summarized as warm and very dry.

September is in the fall / autumn in Vista and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (81°F), whilst at night 17°C (62°F) is normal.

Vista weather averages (imperial / metric)
Daytime temperature 27.3°C 81.1°F
Nightly temperature 16.5°C 61.7°F
Average temperature 21.9°C 71.4°F
Daily sunshine 9.6 hrs
Avg rainfall 7 mm 0.3 ins
Rainy days 1 days
Sea temperature 20.4°C 68.8°F
Humidity 68%
Windspeed 13kph 8 mph

On average September is the 4th driest month of the year in Vista with around 7mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

September temperatures in Vista

Vista average temperature in September

September rainfall

Vista average rain in September

September hourly sunshine

Vista average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Vista in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Vista weather stats

Vista weather statistics
Hottest month: August 28.4°C 83.1°F
Driest month: July 1mm 0ins
Sunniest month: August 10.9hrs
Coldest month: January 18.2°C 64.8°F
Wettest month: January 66mm 2.6ins
Map showing location of Vista (33.20004, -117.24254) Vista map pin © Google

Locations nearby

Top United States locations