Cotia in September
7.8out of 10
Yes, a good time to go
Warm and comfortable: highs around 25°C. Frequent rain: about 9 rainy days.
25°CAvg high
14°CAvg low
9Rainy days (86 mm)
11:52 hDaylight
06:06Sunrise · 17:58 Sunset
Why this score
- Warm and comfortable: highs around 25°C
- Frequent rain: about 9 rainy days
- Rain varies a lot between years (±4.3 days)
What to wear and pack
- T-shirts and light layers
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.3 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 | 27°C | 19°C | 230 mm | 23 | – | – | 6.1 |
| February | 28°C | 19°C | 168 mm | 19 | – | – | 6.1 |
| March | 27°C | 18°C | 136 mm | 19 | – | – | 6.3 |
| April | 26°C | 17°C | 63 mm | 9 | – | – | 7.8 |
| May | 23°C | 14°C | 60 mm | 7 | – | – | 8.1 |
| June | 22°C | 13°C | 48 mm | 5 | – | – | 8.4 |
| July | 22°C | 12°C | 48 mm | 5 | – | – | 8.4 |
| August | 24°C | 13°C | 38 mm | 5 | – | – | 8.5 |
| September | 25°C | 14°C | 86 mm | 9 | – | – | 7.8 |
| October | 26°C | 16°C | 114 mm | 14 | – | – | 7.1 |
| November | 26°C | 17°C | 150 mm | 16 | – | – | 6.6 |
| December | 27°C | 18°C | 181 mm | 20 | – | – | 6.1 |
Frequently asked questions
How hot is Cotia in September?
Daytime highs average 25°C and nights about 14°C.
When is the best time to visit Cotia?
The best months are August, June, July, May.