Santiago in September
7.3out of 10
Possible, with caveats
Warm and comfortable: highs around 22°C. Frequent rain: about 11 rainy days.
22°CAvg high
12°CAvg low
11Rainy days (160 mm)
11:50 hDaylight
06:39Sunrise · 18:29 Sunset
Why this score
- Warm and comfortable: highs around 22°C
- Frequent rain: about 11 rainy days
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
- 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 | 30°C | 19°C | 174 mm | 14 | – | – | 6.5 |
| February | 29°C | 19°C | 155 mm | 14 | – | – | 6.9 |
| March | 28°C | 18°C | 144 mm | 12 | – | – | 7.2 |
| April | 25°C | 15°C | 161 mm | 11 | – | – | 7.3 |
| May | 21°C | 12°C | 125 mm | 9 | – | – | 7.5 |
| June | 19°C | 10°C | 136 mm | 10 | – | – | 7.1 |
| July | 19°C | 9°C | 150 mm | 10 | – | – | 6.9 |
| August | 21°C | 11°C | 129 mm | 9 | – | – | 7.5 |
| September | 22°C | 12°C | 160 mm | 11 | – | – | 7.3 |
| October | 25°C | 14°C | 236 mm | 13 | – | – | 6.7 |
| November | 27°C | 16°C | 156 mm | 10 | – | – | 7.4 |
| December | 30°C | 18°C | 169 mm | 12 | – | – | 6.9 |
Frequently asked questions
How hot is Santiago in September?
Daytime highs average 22°C and nights about 12°C.
When is the best time to visit Santiago?
The best months are May, August, November, April.