City, Japan
Nagasaki weather by month and the best time to visit
When to go to Nagasaki
Spring and autumn are mild. June is rainy, Jul–Aug hot and humid, and typhoons peak Aug–Sep. Winter is cool and calm; Lantern Festival is in Feb.
Nagasaki weather by month
Average daily high, rainfall and conditions.
- Jan10°71 mm
- Feb11°99 mm
- Mar14°131 mm
- Apr19°167 mm
- May24°186 mm
- Jun27°333 mm
- Jul30°352 mm
- Aug31°225 mm
- Sep28°201 mm
- Oct23°117 mm
- Nov17°103 mm
- Dec12°92 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 10°C49°F | 3°C38°F | 71 mm | 79% | Cold |
| February | 11°C53°F | 4°C39°F | 99 mm | 78% | Cool |
| March | 14°C58°F | 6°C43°F | 131 mm | 77% | Cool |
| April | 19°C67°F | 10°C51°F | 167 mm | 78% | Rainy |
| May | 24°C74°F | 15°C59°F | 186 mm | 80% | Rainy |
| June | 27°C80°F | 19°C67°F | 333 mm | 84% | Very wet |
| July | 30°C85°F | 24°C74°F | 352 mm | 86% | Very wet |
| August | 31°C88°F | 24°C76°F | 225 mm | 83% | Rainy |
| September | 28°C82°F | 21°C69°F | 201 mm | 84% | Rainy |
| October | 23°C73°F | 15°C60°F | 117 mm | 81% | Pleasant |
| November | 17°C63°F | 10°C51°F | 103 mm | 80% | Cool |
| December | 12°C53°F | 6°C42°F | 92 mm | 79% | Cool |
Best months across Japan
| Place | Best months | Warmest month |
|---|---|---|
| Tokyo | Mar–May, Oct–Nov | Aug (30°C) |
| Kyoto | Mar–May, Oct–Nov | Aug (31°C) |
| Osaka | Mar–May, Oct–Nov | Aug (32°C) |
| Hiroshima | Mar–May, Oct–Nov | Aug (32°C) |
| Nara | Mar–May, Oct–Nov | Aug (31°C) |
| Sapporo | Feb, Jun–Sep | Aug (26°C) |
| Okinawa | Apr–Jun, Oct–Nov | Aug (30°C) |
| Hakone | Apr–May, Oct–Dec | Aug (24°C) |
| Fukuoka | Mar–May, Oct–Nov | Aug (32°C) |
| Kawaguchiko | Oct–Feb | Aug (26°C) |
| Niseko | Jul–Aug, Dec–Mar | Aug (24°C) |
| Yokohama | Mar–May, Oct–Nov | Aug (31°C) |
| Kanazawa | Apr–May, Oct–Nov | Aug (31°C) |
| Takayama | Apr–May, Oct–Nov | Aug (29°C) |
| Nagoya | Mar–May, Oct–Nov | Aug (31°C) |
| Nikko | May, Jul–Aug, Oct–Nov | Aug (28°C) |
| Kamakura | Mar–May, Oct–Nov | Aug (31°C) |
| Kobe | Mar–May, Oct–Nov | Aug (30°C) |
| Hakuba | Jan–Feb, Jul–Sep | Aug (28°C) |
| Ishigaki | Apr–May, Jul, Sep–Oct | Jul (29°C) |
| Nagasaki | Mar–May, Oct–Nov | Aug (31°C) |
| Shirakawa-go | Feb, May, Oct–Nov | Aug (28°C) |
| Miyakojima | Apr–Jun, Sep–Oct | Jul (29°C) |
| Hakodate | Jun–Oct | Aug (25°C) |
| Otaru | Feb, Jun–Sep | Aug (26°C) |
| Beppu | Mar–May, Oct–Nov | Aug (31°C) |
| Matsumoto | Apr–May, Sep–Nov | Aug (29°C) |
| Koyasan | Apr–May, Oct–Nov | Aug (27°C) |
| Furano | Jan–Feb, Jul–Aug | Aug (25°C) |
| Sendai | Apr–May, Sep–Nov | Aug (29°C) |
Quick answers
What is the best month to visit Nagasaki?
Mar–May, Oct–Nov. Spring and autumn are mild. June is rainy, Jul–Aug hot and humid, and typhoons peak Aug–Sep. Winter is cool and calm; Lantern Festival is in Feb.
When is the rainy season in Nagasaki?
Rain peaks in July with about 352 mm. Months with 150 mm or more: Apr–Sep.
What is the hottest month in Nagasaki?
August, with average highs of 31°C (88°F).
How cold does Nagasaki get?
The coolest nights are in January, averaging 3°C (38°F).
More about Nagasaki
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Sources
- NASA POWER climatology (2001–2020)
- Nagasaki Travel Guide (city tourism)
- Nagasaki Electric Tramway
- Nagasaki Airport
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.7°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.