Big Sur weather in August
August in Big Sur: warm, dry, with clean air — one of the best months to visit.
#1 of 12 months in Big Sur · #77 of 897 destinations to visit in August · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Big Sur in August
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Big Sur climate normals — August
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 61°F | |
| Rainfall | 0 mm / 0 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 14°C / 58°F | |
| Sunshine | 12.4 h/day | |
| Daylight | 13.5 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Big Sur in August — FAQ
- Is August a good time to visit Big Sur?
- August in Big Sur: warm, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Big Sur on SeasonMap's comfort score (92/100).
- What is the weather like in Big Sur in August?
- In August, Big Sur averages a daily high of 24.2°C and a low of 16.3°C, with about 0.4 mm of rain over roughly 0 rainy days.
- What is the air quality in Big Sur in August?
- Big Sur has a mean US Air Quality Index of about 29 in August.