Is Hermosillo hot in September?
Days are typically very hot at 37.5°C, while nights average 24.6°C.
Mexico · 1991–2020 normal
Hermosillo in
September.
Typical September weather in Hermosillo: 37.5°C by day, 24.6°C at night, 65 mm of rain over 4.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high37.5°C
Typical low24.6°C
Rain65 mm
Wet days4.8
In the year-round weather comparison, September scores 33 out of 100 (January leads the year at 91). Daylight is calculated as 12 h 18 from latitude 29.09°.
September at a glance
What is Hermosillo like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 65 mm across about 5 wet days.
How much daylight is there?
There are about 12 h 18 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 10 of 12 in our weather comparison; January ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4004898
- NOAA station
- MXN00026139 · HERMOSILLO II (DGE)
- Station distance
- 1.7 km from the place centre
- Coverage
- Good coverage · 22 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Hermosillo is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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