Nagasaki weather in April
April in Nagasaki: nice, rainy — one of the best months to visit.
#2 of 12 months in Nagasaki · #319 of 897 destinations to visit in April · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nagasaki in April
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Nagasaki climate normals — April
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Rainfall | 130 mm / 5.1 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 11°C / 52°F | |
| Sunshine | 9 h/day | |
| Daylight | 13 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 64 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Nagasaki in April — FAQ
- Is April a good time to visit Nagasaki?
- April in Nagasaki: nice, rainy — one of the best months to visit. It ranks #2 of 12 months for Nagasaki on SeasonMap's comfort score (84/100).
- What is the weather like in Nagasaki in April?
- In April, Nagasaki averages a daily high of 17.8°C and a low of 13.3°C, with about 130.4 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Nagasaki in April?
- Nagasaki has a mean US Air Quality Index of about 64 in April.