Last updated: August 27, 2025
In December, the average temperature in Primero de Mayo, Mexico hovers around 22°C (71°F). Expect a comfortable range, with minimums dipping to 10°C (51°F) and maximums reaching 27°C (82°F). However, be prepared for some rain, as there's an average precipitation of 29 mm (1.2 in) spread over about 6 days. With an average humidity of 89%, it's a perfect time to embrace the local atmosphere!
In December in Primero de Mayo, the average temperature is 22°C (71°F). The maximum can reach 27°C (82°F), while the minimum can drop to as low as 10°C (51°F). This mild climate makes it an ideal time for travelers looking to explore the outdoors comfortably.
In Primero de Mayo in December, the total precipitation amount is 29 mm (1.2 in) over the course of 6 days.
In Primero de Mayo in December humidity is 89%. With an average temperature of 22°C (71°F), this humidity feels like a warm blanket wrapped around you, making travel a bit more challenging as perspiration clings to your skin and the air feels thick, slowing your pace and requiring frequent breaks to stay refreshed.
In Primero de Mayo in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Primero de Mayo, you can refer to this Hourly UV Index in Primero de Mayo.
UV Risk Categories
Weather in Primero de Mayo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Primero de Mayo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 20°C (69°F) | 69 mm (2.7 inches) | 87% | high |
| February Weather | 21°C (70°F) | 32 mm (1.2 inches) | 85% | very high |
| March Weather | 23°C (73°F) | 46 mm (1.8 inches) | 83% | extreme |
| April Weather | 25°C (77°F) | 31 mm (1.2 inches) | 84% | extreme |
| May Weather | 27°C (81°F) | 62 mm (2.4 inches) | 85% | extreme |
| June Weather | 28°C (83°F) | 137 mm (5.4 inches) | 79% | extreme |
| July Weather | 28°C (83°F) | 111 mm (4.4 inches) | 71% | extreme |
| August Weather | 29°C (84°F) | 88 mm (3.4 inches) | 72% | extreme |
| September Weather | 28°C (82°F) | 182 mm (7.2 inches) | 80% | extreme |
| October Weather | 26°C (80°F) | 148 mm (5.8 inches) | 85% | extreme |
| November Weather | 24°C (75°F) | 49 mm (1.9 inches) | 88% | very high |
| December Weather | 22°C (71°F) | 29 mm (1.2 inches) | 89% | high |