Isa in September
6.6out of 10
Possible, with caveats
Warm and comfortable: highs around 28°C. Frequent rain: about 14 rainy days.
28°CAvg high
21°CAvg low
14Rainy days (196 mm)
12:11 hDaylight
06:06Sunrise · 18:17 Sunset
Why this score
- Warm and comfortable: highs around 28°C
- Frequent rain: about 14 rainy days
- Rain varies a lot between years (±4.6 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 (±4.6 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 | 11°C | 4°C | 85 mm | 10 | – | – | 5.9 |
| February | 12°C | 4°C | 109 mm | 10 | – | – | 6.0 |
| March | 15°C | 7°C | 150 mm | 14 | – | – | 5.9 |
| April | 20°C | 12°C | 185 mm | 12 | – | – | 6.6 |
| May | 24°C | 16°C | 205 mm | 12 | – | – | 6.9 |
| June | 26°C | 20°C | 535 mm | 20 | – | – | 6.1 |
| July | 30°C | 24°C | 368 mm | 20 | – | – | 5.9 |
| August | 31°C | 24°C | 183 mm | 17 | – | – | 5.8 |
| September | 28°C | 21°C | 196 mm | 14 | – | – | 6.6 |
| October | 24°C | 16°C | 110 mm | 9 | – | – | 7.8 |
| November | 18°C | 10°C | 109 mm | 9 | – | – | 7.1 |
| December | 13°C | 5°C | 88 mm | 9 | – | – | 6.3 |
Frequently asked questions
How hot is Isa in September?
Daytime highs average 28°C and nights about 21°C.
When is the best time to visit Isa?
The best months are October.