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December in Guanajuato City brings high temperatures, with daytime highs of 24°C (75°F) and nights around 8°C (46°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
If your ideal day consists of dry skies and pleasant temperatures, January, February, March, October, November and December typically offer the best circumstances for Guanajuato City.
Pick a month to see the average temperature, rainfall and sunshine in Guanajuato City - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Guanajuato City typically stay consistent throughout December, with daily highs averaging around 24°C (75°F). Nights are cold, with lows around 8°C (46°F).
Browse day-by-day weather records for Guanajuato City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Guanajuato City between 1976 and 2025, these are the recorded extremes during December.
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
For Guanajuato City in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Wind Speed
See the full Guanajuato City climate overview or explore weather in Mexico.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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