Best Time to Visit El Cajon
Best time: Jun, Jul, Aug, May.
Aug is warmest (31.2°C high); Jan is rainiest (62 mm).
El Cajon weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 20 | 6.7 | 62 | 4.9 |
| Feb | 21 | 7.7 | 58 | 5.9 |
| Mar | 21.2 | 8.7 | 61 | 7.9 |
| Apr | 23.7 | 10 | 25 | 9.8 |
| May | 24.6 | 12.5 | 6 | 10.5 |
| Jun | 27.4 | 14.4 | 2 | 11.3 |
| Jul | 30.4 | 16.2 | 1 | 11.1 |
| Aug | 31.2 | 17.1 | 3 | 10.5 |
| Sep | 30.2 | 16.4 | 7 | 8.9 |
| Oct | 27.6 | 13.4 | 11 | 7 |
| Nov | 23.7 | 9 | 35 | 5.5 |
| Dec | 20.7 | 6.5 | 41 | 4.7 |
Average high temperature
Best months by activity
Overall: JunJulAugMay
Beaches: JulAugJunSep
Hiking: MayJunAprJul
Sightseeing: JunJulAugMay
El Cajon quick facts
What to pack
Mild year-round — pack layers and a light jacket.
Frequently asked questions
When is the best time to visit El Cajon?
Jun, Jul, Aug, May.
What is the rainiest month?
Jan, about 62 mm.
What is the warmest month?
Aug, with average highs of 31.2°C.
Where to stay
See El Cajon hotels · Book El Cajon tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.