El Cajon (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit El Cajon.
Climate overview of El Cajon
Temperatures in El Cajon, California, United States of America, vary greatly throughout the year. August is the hottest month at 32°C (90°F), while December is the coldest at 20°C (68°F).
The city has a relatively dry climate, receiving around 278 mm (11 in) of rainfall per year. It does experience a distinct dry season from March to November, with very warm summers and pleasant winters. December is the wettest month and June the driest. July is the sunniest month, averaging 10.1 hours of sunshine per day.
El Cajon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in El Cajon - and find the best time to visit.
Monthly Temperature in El Cajon
The climate in El Cajon is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 32°C (90°F) in August to a pleasant 20°C (68°F) in December.
Nighttime temperatures range from 18°C (64°F) in August to 6°C (43°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in El Cajon
El Cajon has a relatively dry climate with low precipitation, averaging 278 mm (11 in) of rainfall annually. The seasons in El Cajon bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 75 mm (3 in) of precipitation. This rainfall is distributed across 9 rainy days.
In contrast, the driest month, June, experiences much less rainfall, totaling 0.4 mm (0.02 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our El Cajon Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in El Cajon
El Cajon enjoys sunny spells year-round. July sees up to 10.1 hours of daily sunshine, perfect for a sunny trip. February, the least sunny month, still offers a generous 7.7 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in El Cajon by Month
The relative humidity is high throughout the year in El Cajon.
The city experiences its highest humidity in July, reaching 75%. In January, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit El Cajon
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, June, October, November and December
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in El Cajon
What is the best time to visit El Cajon?
January, February, March, April, May, June, October, November and December typically offer the most optimal weather in El Cajon. In contrast, July, August and September tend to have less optimal conditions. El Cajon has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in El Cajon?
Daytime highs range from 20°C (68°F) in December to 32°C (90°F) in August. Nighttime lows range from 6°C (43°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does El Cajon get?
Annual rainfall is around 278 mm (11 in). December is the wettest month with 75 mm (3 in), while June is the driest with 0.4 mm (0.02 in).
How sunny is El Cajon?
El Cajon receives around 3,069 hours of sunshine per year. July is the sunniest month with 304 hours, while February is the cloudiest with just 230 hours. Overall, El Cajon enjoys abundant sunshine.
El Cajon 3-Day Forecast
El Cajon (CA) 3-Day Forecast
El Cajon on the map
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