Hermosillo in September
5.9out of 10
Possible, with caveats
Very hot: daytime highs around 37°C. Some rain: about 7 rainy days.
37°CAvg high
25°CAvg low
7Rainy days (51 mm)
12:10 hDaylight
06:13Sunrise · 18:23 Sunset
Why this score
- Very hot: daytime highs around 37°C
- Some rain: about 7 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in September varies a lot between years (±3.2 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 | 25°C | 9°C | 12 mm | 2 | – | – | 8.9 |
| February | 26°C | 10°C | 15 mm | 2 | – | – | 8.8 |
| March | 29°C | 12°C | 7 mm | 1 | – | – | 8.9 |
| April | 32°C | 15°C | 1 mm | 0 | – | – | 8.1 |
| May | 36°C | 18°C | 0 mm | 0 | – | – | 7.2 |
| June | 39°C | 24°C | 3 mm | 1 | – | – | 6.0 |
| July | 39°C | 27°C | 40 mm | 7 | – | – | 5.3 |
| August | 38°C | 27°C | 51 mm | 10 | – | – | 5.2 |
| September | 37°C | 25°C | 51 mm | 7 | – | – | 5.9 |
| October | 34°C | 19°C | 20 mm | 2 | – | – | 7.4 |
| November | 29°C | 13°C | 13 mm | 2 | – | – | 8.9 |
| December | 24°C | 9°C | 19 mm | 2 | – | – | 8.8 |
Frequently asked questions
How hot is Hermosillo in September?
Daytime highs average 37°C and nights about 25°C.
When is the best time to visit Hermosillo?
The best months are January, March, November, February.