Monthly climate averages for Mérida, Mexico. Based on 10-year ERA5 reanalysis data.
BSh Hot Semi-Arid
Climate OverviewMérida, Mexico in December has hot conditions, with highs reaching 29.1°C (84°F) and afternoons the warmest part of the day.
This month falls at the beginning of Winter.
Temperatures remain fairly steady throughout December, with daily highs around 30°C (86°F).
December sees fairly even rainfall, totalling about 22 mm across the month.
The warmest days tend to fall around the 1th, averaging 30.3°C (87°F).
Compared to November, this month is about 0°C cooler with 2 fewer rainy days.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 29°C (84°F) are ideal for full-day outdoor exploration.
Rain is uncommon in this month, so most days stay dry from morning through evening.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 29°C / 20°C | 30°C / 21°C | 5days (24 mm) Good | 9h Good | 72% Muggy | 5.7 High | Excellent | View Details |
| February best | 31°C / 20°C | 32°C / 22°C | 2days (12 mm) Excellent | 9.9h Good | 67% Muggy | 7.1 Very High | Excellent | View Details |
| March | 33°C / 22°C | 35°C / 24°C | 2days (12 mm) Excellent | 10.8h Excellent | 62% Muggy | 8.3 Very High | Good | View Details |
| April | 35°C / 23°C | 38°C / 26°C | 4days (19 mm) Good | 11.6h Excellent | 59% Moderate | 8.9 Very High | Fair | View Details |
| May | 36°C / 25°C | 40°C / 29°C | 6days (41 mm) Good | 11.8h Excellent | 61% Muggy | 9 Very High | Poor | View Details |
| June | 34°C / 25°C | 39°C / 29°C | 17days (133 mm) Wet | 10.7h Excellent | 73% Muggy | 8.4 Very High | Poor | View Details |
| July | 34°C / 25°C | 40°C / 29°C | 15days (74 mm) Wet | 11.7h Excellent | 72% Muggy | 8.5 Very High | Poor | View Details |
| August | 34°C / 25°C | 40°C / 29°C | 20days (107 mm) Wet | 11.4h Excellent | 77% Humid | 8.7 Very High | Wet | View Details |
| September | 33°C / 24°C | 39°C / 29°C | 19days (116 mm) Wet | 10.9h Excellent | 80% Humid | 8.3 Very High | Wet | View Details |
| October | 31°C / 23°C | 36°C / 27°C | 15days (96 mm) Wet | 9.9h Good | 79% Humid | 7 High | Fair | View Details |
| November best | 30°C / 22°C | 33°C / 25°C | 7days (33 mm) Good | 9.9h Good | 77% Humid | 5.9 High | Good | View Details |
| December best | 29°C / 20°C | 31°C / 23°C | 5days (22 mm) Good | 9.5h Good | 74% Muggy | 5.5 High | Excellent | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
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