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Chula Vista Weather by Month
Average temperatures, rainfall and humidity for Chula Vista, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Chula Vista month looks like before you travel — then check the live Chula Vista forecast for the days ahead.
Warmest month
August
28°C average high
Coolest month
January
10°C average low
Wettest month
December
44 mm of rain
Driest month
August
3 mm of rain
Average temperature and rainfall in Chula Vista by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 19°C | 10°C | 2°C / 29°C | 44 mm | 66% | 11 km/h |
| February | 20°C | 10°C | 1°C / 32°C | 37 mm | 68% | 12 km/h |
| March | 20°C | 11°C | 5°C / 33°C | 37 mm | 72% | 12 km/h |
| April | 21°C | 12°C | 6°C / 36°C | 24 mm | 71% | 12 km/h |
| May | 21°C | 14°C | 9°C / 37°C | 28 mm | 74% | 12 km/h |
| June | 24°C | 16°C | 11°C / 40°C | 5 mm | 76% | 11 km/h |
| July | 26°C | 19°C | 15°C / 36°C | 6 mm | 76% | 11 km/h |
| August | 28°C | 19°C | 14°C / 35°C | 3 mm | 76% | 10 km/h |
| September | 27°C | 18°C | 10°C / 39°C | 9 mm | 74% | 11 km/h |
| October | 25°C | 15°C | 8°C / 38°C | 11 mm | 70% | 10 km/h |
| November | 22°C | 12°C | 5°C / 35°C | 24 mm | 64% | 10 km/h |
| December | 19°C | 10°C | 1°C / 28°C | 44 mm | 67% | 10 km/h |
Best time to visit Chula Vista
The most comfortable time to visit Chula Vista is generally June and October to November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around December, totalling about 272 mm a year.
Travellers who prefer heat should aim for August, when highs average 28°C. December is the month to avoid if rain would spoil your plans — it averages 44 mm, roughly 15× the rainfall of the driest month (August).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Chula Vista forecast for what is happening now.