Crater Lake National Park weather in August
August in Crater Lake National Park: warm, dry, with clean air — one of the best months to visit.
#2 of 12 months in Crater Lake National Park · #24 of 604 destinations to visit in August · comfort 93/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Crater Lake National Park climate normals — August
| Daytime high | 25°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 51% | 🍃 comfortable |
| Dew point | 5°C / 42°F | |
| Sunshine | 12.5 h/day | |
| Daylight | 13.9 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Crater Lake National Park?
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Crater Lake National Park in August — FAQ
- Is August a good time to visit Crater Lake National Park?
- August in Crater Lake National Park: warm, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Crater Lake National Park on SeasonMap's comfort score (93/100).
- What is the weather like in Crater Lake National Park in August?
- In August, Crater Lake National Park averages a daily high of 25.4°C and a low of 9.9°C, with about 15.4 mm of rain over roughly 4.2 rainy days.
- What is the air quality in Crater Lake National Park in August?
- Crater Lake National Park has a mean US Air Quality Index of about 48 in August.