San Isidro in September
8.5out of 10
Yes, a good time to go
Warm and comfortable: highs around 23°C. Some rain: about 4 rainy days.
23°CAvg high
21°CAvg low
4Rainy days (20 mm)
12:09 hDaylight
07:56Sunrise · 20:05 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Some rain: about 4 rainy days
What to wear and pack
- T-shirts and light layers
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 | 17°C | 16°C | 33 mm | 6 | – | – | 7.6 |
| February | 17°C | 16°C | 37 mm | 6 | – | – | 7.5 |
| March | 18°C | 16°C | 39 mm | 7 | – | – | 7.5 |
| April | 18°C | 16°C | 35 mm | 8 | – | – | 7.5 |
| May | 19°C | 17°C | 24 mm | 6 | – | – | 7.8 |
| June | 21°C | 19°C | 12 mm | 3 | – | – | 8.5 |
| July | 23°C | 21°C | 1 mm | 0 | – | – | 9.0 |
| August | 24°C | 22°C | 3 mm | 1 | – | – | 9.0 |
| September | 23°C | 21°C | 20 mm | 4 | – | – | 8.5 |
| October | 22°C | 20°C | 42 mm | 9 | – | – | 8.0 |
| November | 20°C | 19°C | 34 mm | 7 | – | – | 7.8 |
| December | 19°C | 17°C | 46 mm | 7 | – | – | 7.6 |
Frequently asked questions
How hot is San Isidro in September?
Daytime highs average 23°C and nights about 21°C.
When is the best time to visit San Isidro?
The best months are July, August, June, September.