Climate averages 1991–2020
Hermosillo weather
in January.
A warm, very dry month: the 11th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Hermosillo: daytime highs average 23.8°C and nights cool to about 9.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 12 mm of rain on roughly 2 days, which makes January a very dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 31 min on an average January day.
The nearest other city in this atlas is Heroica Guaymas (130 km away). In January its highs average 21.9°C, 1.9°C cooler than Hermosillo, with 8.4 mm of rain.
Among the 153 cities listed in Mexico, Hermosillo ranks joint 47th of 153 for the warmest January highs and joint 42nd of 153 for the driest January (rainfall, lowest first). The mean January high of those 153 cities is 22.4°C; Hermosillo is 1.4°C warmer than that mean.
From January to February, average highs rise by 1.1°C to 25.0°C, and monthly rainfall rises from 12 mm to 15 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Hermosillo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 23.8°C9.4°C | 9.4°C | 12 | 1.6 | 10.511 h |
| February | 25.0°C10.3°C | 10.3°C | 15 | 2.0 | 11.111 h |
| March | 28.5°C12.3°C | 12.3°C | 6.5 | 0.8 | 12.012 h |
| April | 31.7°C14.9°C | 14.9°C | 1.4 | 0.4 | 12.813 h |
| May | 35.2°C18.1°C | 18.1°C | 0.4 | 0.1 | 13.614 h |
| June | 39.1°C23.3°C | 23.3°C | 3.3 | 1.1 | 14.014 h |
| July | 38.3°C26.6°C | 26.6°C | 40 | 7.6 | 13.814 h |
| August | 37.6°C26.6°C | 26.6°C | 51 | 9.8 | 13.213 h |
| September | 36.0°C24.5°C | 24.5°C | 52 | 7.1 | 12.412 h |
| October | 33.2°C19.1°C | 19.1°C | 19 | 2.1 | 11.511 h |
| November | 27.9°C13.5°C | 13.5°C | 13 | 1.5 | 10.711 h |
| December | 23.1°C9.4°C | 9.4°C | 19 | 1.9 | 10.310 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Heroica Guaymas in JanuaryMexico · 130 kmHigh 21.9°C · Low 12.8°C · 8.4 mm rain
- Ciudad Obregón in JanuaryMexico · 205 kmHigh 25.8°C · Low 10.6°C · 11 mm rain
- Nogales in JanuaryMexico · 247 kmHigh 16.3°C · Low 2.1°C · 35 mm rain
- Navojoa in JanuaryMexico · 270 kmHigh 26.4°C · Low 10.9°C · 14 mm rain
- Agua Prieta in JanuaryMexico · 284 kmHigh 16.3°C · Low 2.3°C · 27 mm rain
- Tucson in JanuaryUnited States · 348 kmHigh 17.6°C · Low 4.0°C · 29 mm rain
- Cuauhtémoc in JanuaryMexico · 407 kmHigh 14.3°C · Low 0.7°C · 12 mm rain
- Los Mochis in JanuaryMexico · 415 kmHigh 25.6°C · Low 13.4°C · 13 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Hermosillo) is explained once on the Hermosillo year overview and on the Sources, method and limits page.