Niigata in September
6.9out of 10
Possible, with caveats
Warm and comfortable: highs around 25°C. Frequent rain: about 14 rainy days.
25°CAvg high
21°CAvg low
14Rainy days (146 mm)
12:14 hDaylight
05:31Sunrise · 17:45 Sunset
Why this score
- Warm and comfortable: highs around 25°C
- Frequent rain: about 14 rainy days
What to wear and pack
- T-shirts and light layers
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (2.8 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 6°C | 3°C | 178 mm | 26 | – | – | 3.5 |
| February | 6°C | 3°C | 115 mm | 21 | – | – | 3.6 |
| March | 9°C | 5°C | 109 mm | 18 | – | – | 4.4 |
| April | 13°C | 9°C | 91 mm | 12 | – | – | 6.0 |
| May | 18°C | 14°C | 98 mm | 12 | – | – | 6.8 |
| June | 22°C | 19°C | 126 mm | 11 | – | – | 7.3 |
| July | 26°C | 23°C | 224 mm | 15 | – | – | 6.4 |
| August | 28°C | 24°C | 160 mm | 13 | – | – | 7.0 |
| September | 25°C | 21°C | 146 mm | 14 | – | – | 6.9 |
| October | 20°C | 16°C | 156 mm | 15 | – | – | 6.3 |
| November | 14°C | 10°C | 163 mm | 19 | – | – | 4.9 |
| December | 9°C | 5°C | 195 mm | 25 | – | – | 4.0 |
Frequently asked questions
How hot is Niigata in September?
Daytime highs average 25°C and nights about 21°C.
When is the best time to visit Niigata?
The best months are June, August, September, May.