San José weather in June
June in San José: warm, soaked, with clean air — a gamble, with 28 rainy days.
#9 of 12 months in San José · #747 of 897 destinations to visit in June · comfort 64/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on San José in June
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San José climate normals — June
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 65°F | |
| Rainfall | 364 mm / 14.3 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 93% | 💦 very humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 12.7 h | |
| Wind | 7 km/h / 4 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San José in June — FAQ
- Is June a good time to visit San José?
- June in San José: warm, soaked, with clean air — a gamble, with 28 rainy days. It ranks #9 of 12 months for San José on SeasonMap's comfort score (64/100).
- What is the weather like in San José in June?
- In June, San José averages a daily high of 24.4°C and a low of 18.6°C, with about 364.1 mm of rain over roughly 28 rainy days.
- What is the air quality in San José in June?
- San José has a mean US Air Quality Index of about 42 in June.