Cali weather in August
August in Cali: warm, soaked, with clean air — fine if you can take 17 rainy days.
#4 of 12 months in Cali · #470 of 897 destinations to visit in August · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cali in August
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Cali climate normals — August
| Daytime high | 25°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 17°C / 63°F | |
| Rainfall | 169 mm / 6.6 in | ⛈ soaked |
| Rainy days | 17 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 8.5 h/day | |
| Daylight | 12.2 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cali in August — FAQ
- Is August a good time to visit Cali?
- August in Cali: warm, soaked, with clean air — fine if you can take 17 rainy days. It ranks #4 of 12 months for Cali on SeasonMap's comfort score (80/100).
- What is the weather like in Cali in August?
- In August, Cali averages a daily high of 25.4°C and a low of 17.4°C, with about 168.9 mm of rain over roughly 17 rainy days.
- What is the air quality in Cali in August?
- Cali has a mean US Air Quality Index of about 30 in August.