Climate averages 1991–2020
Guanajuato weather
in December.
A mild, very dry month: the 11th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Guanajuato: daytime highs average 21.9°C and nights cool to about 8.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 5.8 mm of rain on roughly 1 day, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 53 min on an average December day.
The nearest other city in this atlas is Silao de la Victoria (19 km away). In December its highs average 23.4°C, 1.5°C warmer than Guanajuato, with 5.3 mm of rain.
Among the 153 cities listed in Mexico, Guanajuato ranks joint 84th of 153 for the warmest December highs and joint 25th of 153 for the driest December (rainfall, lowest first). The mean December high of those 153 cities is 22.7°C; Guanajuato is 0.8°C cooler than that mean.
From December to January, average highs fall by 0.5°C to 21.4°C, and monthly rainfall rises from 5.8 mm to 13 mm.
The annual picture
December 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
Guanajuato climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.4°C8.0°C | 8.0°C | 13 | 2.4 | 11.011 h |
| February | 23.8°C9.3°C | 9.3°C | 13 | 2.0 | 11.411 h |
| March | 26.3°C11.1°C | 11.1°C | 13 | 2.1 | 12.012 h |
| April | 28.6°C13.5°C | 13.5°C | 14 | 2.9 | 12.613 h |
| May | 29.1°C14.9°C | 14.9°C | 48 | 8.5 | 13.113 h |
| June | 26.8°C14.9°C | 14.9°C | 133 | 14.2 | 13.413 h |
| July | 24.4°C14.1°C | 14.1°C | 160 | 17.7 | 13.313 h |
| August | 24.6°C14.1°C | 14.1°C | 141 | 15.9 | 12.813 h |
| September | 23.4°C13.8°C | 13.8°C | 131 | 14.4 | 12.312 h |
| October | 23.5°C12.0°C | 12.0°C | 47 | 7.0 | 11.712 h |
| November | 22.9°C10.1°C | 10.1°C | 13 | 2.5 | 11.211 h |
| December, selected | 21.9°C8.7°C | 8.7°C | 5.8 | 1.3 | 10.911 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
December in nearby cities
- Silao de la Victoria in DecemberMexico · 19 kmHigh 23.4°C · Low 9.6°C · 5.3 mm rain
- Irapuato in DecemberMexico · 40 kmHigh 23.9°C · Low 9.2°C · 3.8 mm rain
- León de los Aldama in DecemberMexico · 45 kmHigh 22.8°C · Low 8.9°C · 5.6 mm rain
- Salamanca, Mexico in DecemberMexico · 50 kmHigh 24.3°C · Low 9.6°C · 3.9 mm rain
- San Miguel de Allende in DecemberMexico · 55 kmHigh 22.6°C · Low 9.2°C · 4.4 mm rain
- San Francisco del Rincón in DecemberMexico · 62 kmHigh 23.2°C · Low 9.4°C · 5.6 mm rain
- Celaya in DecemberMexico · 72 kmHigh 23.5°C · Low 8.9°C · 3.8 mm rain
- Lagos de Moreno in DecemberMexico · 79 kmHigh 22.2°C · Low 8.6°C · 7.7 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 Guanajuato) is explained once on the Guanajuato year overview and on the Sources, method and limits page.