Hermosillo Climate by Month
Hermosillo, Sonora, Mexico
Very hot summers and mild winters, with little rain, mostly from July to October.
Very hot summers and mild winters, with little rain, mostly from July to October: that's Hermosillo's climate in short. Afternoon highs range from 78°F (25°C) in December to 105°F (40°C) in July, and December nights average 42°F (6°C). It gets only 11 in (275 mm) of rain a year. March to June are almost completely dry.
- Warmest month
- 105°F(40°C)
- Average high, July
- Coldest nights
- 42°F(6°C)
- Average low, December
- Rain per year
- 11 in(275 mm)
- Wettest: July
- Humidity
- 49%
- Sunniest: May
Best and worst months in Hermosillo
Best for weatherDecember to February are the best time for weather in Hermosillo: highs near 79°F (26°C) and almost no rain.
Least pleasantJuly and August are the least pleasant; July is the hottest, with highs of 105°F (40°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in December.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hermosillo weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 78°F(26°C) | 42°F(6°C) | 0.6 in(14 mm) | 50% | 3.4 |
| FebFebruaryBest | 80°F(27°C) | 44°F(7°C) | 0.5 in(13 mm) | 53% | 4.0 |
| MarMarch | 86°F(30°C) | 48°F(9°C) | 0.2 in(4 mm) | 44% | 5.1 |
| AprApril | 92°F(33°C) | 53°F(11°C) | 0.1 in(2 mm) | 41% | 6.1 |
| MayMay | 98°F(37°C) | 59°F(15°C) | 0.1 in(2 mm) | 39% | 6.8 |
| JunJune | 104°F(40°C) | 69°F(20°C) | 0.3 in(8 mm) | 42% | 6.8 |
| JulJuly | 105°F(40°C) | 76°F(25°C) | 2.8 in(72 mm) | 51% | 6.1 |
| AugAugust | 104°F(40°C) | 77°F(25°C) | 2.5 in(63 mm) | 53% | 5.9 |
| SepSeptember | 101°F(39°C) | 73°F(23°C) | 2.0 in(52 mm) | 57% | 5.1 |
| OctOctober | 96°F(35°C) | 61°F(16°C) | 0.7 in(18 mm) | 51% | 4.7 |
| NovNovember | 87°F(30°C) | 50°F(10°C) | 0.4 in(10 mm) | 51% | 3.7 |
| DecDecemberBest | 78°F(25°C) | 42°F(6°C) | 0.7 in(17 mm) | 51% | 3.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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