Monterey weather in December
December in Monterey: cool, rainy, with clean air — a good time to visit.
#12 of 12 months in Monterey · #619 of 897 destinations to visit in December · comfort 61/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Monterey in December
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Monterey climate normals — December
| Daytime high | 14°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 10°C / 49°F | |
| Rainfall | 120 mm / 4.7 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 6.8 h/day | |
| Daylight | 9.7 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Monterey in December — FAQ
- Is December a good time to visit Monterey?
- December in Monterey: cool, rainy, with clean air — a good time to visit. It ranks #12 of 12 months for Monterey on SeasonMap's comfort score (61/100).
- What is the weather like in Monterey in December?
- In December, Monterey averages a daily high of 14.3°C and a low of 9.6°C, with about 120.2 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Monterey in December?
- Monterey has a mean US Air Quality Index of about 37 in December.