Nagasaki weather in June
June in Nagasaki: warm, soaked, with very humid — a gamble, with 15 rainy days.
#10 of 12 months in Nagasaki · #753 of 897 destinations to visit in June · comfort 63/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nagasaki in June
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Nagasaki climate normals — June
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Rainfall | 334 mm / 13.1 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 21°C / 69°F | |
| Sunshine | 8 h/day | |
| Daylight | 14.3 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 63 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Nagasaki in June — FAQ
- Is June a good time to visit Nagasaki?
- June in Nagasaki: warm, soaked, with very humid — a gamble, with 15 rainy days. It ranks #10 of 12 months for Nagasaki on SeasonMap's comfort score (63/100).
- What is the weather like in Nagasaki in June?
- In June, Nagasaki averages a daily high of 24.7°C and a low of 21.2°C, with about 334 mm of rain over roughly 14.8 rainy days.
- What is the air quality in Nagasaki in June?
- Nagasaki has a mean US Air Quality Index of about 63 in June.