San José weather in October
October in San José: warm, soaked, with clean air — a gamble, with 30 rainy days.
#11 of 12 months in San José · #799 of 897 destinations to visit in October · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on San José in October
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San José climate normals — October
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Rainfall | 529 mm / 20.8 in | ⛈ soaked |
| Rainy days | 30 days | |
| Humidity | 93% | 💦 very humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 7.6 h/day | |
| Daylight | 11.9 h | |
| Wind | 6 km/h / 4 mph | |
| Air quality (US AQI) | 30 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San José in October — FAQ
- Is October a good time to visit San José?
- October in San José: warm, soaked, with clean air — a gamble, with 30 rainy days. It ranks #11 of 12 months for San José on SeasonMap's comfort score (62/100).
- What is the weather like in San José in October?
- In October, San José averages a daily high of 24.1°C and a low of 18.3°C, with about 529 mm of rain over roughly 30.2 rainy days.
- What is the air quality in San José in October?
- San José has a mean US Air Quality Index of about 30 in October.