Ijūin in September
6.5out of 10
Possible, with caveats
Warm and comfortable: highs around 29°C. Very wet: about 15 rainy days.
29°CAvg high
23°CAvg low
15Rainy days (203 mm)
12:11 hDaylight
06:07Sunrise · 18:18 Sunset
Why this score
- Warm and comfortable: highs around 29°C
- Very wet: about 15 rainy days
- Rain varies a lot between years (±4.9 days)
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in September varies a lot between years (±4.9 rainy days), so check the forecast closer to your trip. 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 | 12°C | 6°C | 85 mm | 10 | – | – | 6.2 |
| February | 13°C | 6°C | 104 mm | 10 | – | – | 6.3 |
| March | 16°C | 9°C | 153 mm | 13 | – | – | 6.1 |
| April | 21°C | 13°C | 178 mm | 11 | – | – | 6.9 |
| May | 24°C | 17°C | 193 mm | 12 | – | – | 7.0 |
| June | 27°C | 21°C | 493 mm | 20 | – | – | 6.1 |
| July | 30°C | 25°C | 296 mm | 20 | – | – | 5.7 |
| August | 31°C | 25°C | 167 mm | 17 | – | – | 5.7 |
| September | 29°C | 23°C | 203 mm | 15 | – | – | 6.5 |
| October | 25°C | 18°C | 110 mm | 9 | – | – | 7.7 |
| November | 20°C | 13°C | 111 mm | 9 | – | – | 7.4 |
| December | 14°C | 8°C | 83 mm | 8 | – | – | 6.8 |
Frequently asked questions
How hot is Ijūin in September?
Daytime highs average 29°C and nights about 23°C.
When is the best time to visit Ijūin?
The best months are October, November.