Nagasaki Weather in August
Japan · 30-year monthly averages
⚠️ Challenging time to visit
August in Nagasaki is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 25°C (78°F). Expect roughly 218mm of precipitation spread over about 10 rainy days, and heavy rainfall is common — this is peak wet season territory.
Avg high
32°C
89°F
Avg low
25°C
78°F
Rainfall
218mm
very wet
Rainy days
10
days with ≥1mm
☀️ About 207 hours of sunshine over the month (~7h/day).
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
August vs the rest of the year
FAQ
- How hot is Nagasaki in August?
- August in Nagasaki is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 25°C (78°F). Expect roughly 218mm of precipitation spread over about 10 rainy days, and heavy rainfall is common — this is peak wet season territory.
- Does it rain a lot in Nagasaki in August?
- Nagasaki sees around 218mm of precipitation in August on average — very wet by global standards.
- Is August a good time to visit Nagasaki?
- August is a challenging month to visit Nagasaki weather-wise — plan around the conditions.