Big Sur weather in May
May in Big Sur: nice, dry, with clean air — an excellent time to visit.
#6 of 12 months in Big Sur · #525 of 897 destinations to visit in May · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Big Sur in May
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Big Sur climate normals — May
| Daytime high | 19°C / 65°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Rainfall | 25 mm / 1 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 10°C / 50°F | |
| Sunshine | 12.6 h/day | |
| Daylight | 14.1 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Big Sur in May — FAQ
- Is May a good time to visit Big Sur?
- May in Big Sur: nice, dry, with clean air — an excellent time to visit. It ranks #6 of 12 months for Big Sur on SeasonMap's comfort score (80/100).
- What is the weather like in Big Sur in May?
- In May, Big Sur averages a daily high of 18.5°C and a low of 11.9°C, with about 25 mm of rain over roughly 3.4 rainy days.
- What is the air quality in Big Sur in May?
- Big Sur has a mean US Air Quality Index of about 41 in May.