Channel Islands National Park weather in August
August in Channel Islands National Park: nice, dry, with clean air — one of the best months to visit.
#2 of 12 months in Channel Islands National Park · #66 of 604 destinations to visit in August · comfort 90/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Channel Islands National Park climate normals — August
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 16°C / 61°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 2 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 12.1 h/day | |
| Daylight | 13.4 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Channel Islands National Park?
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Channel Islands National Park in August — FAQ
- Is August a good time to visit Channel Islands National Park?
- August in Channel Islands National Park: nice, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Channel Islands National Park on SeasonMap's comfort score (90/100).
- What is the weather like in Channel Islands National Park in August?
- In August, Channel Islands National Park averages a daily high of 18.7°C and a low of 16°C, with about 2 mm of rain over roughly 0.6 rainy days.
- What is the air quality in Channel Islands National Park in August?
- Channel Islands National Park has a mean US Air Quality Index of about 30 in August.