Last updated: August 27, 2025
In December, the average temperature in Primero de Mayo, Mexico hovers around 16°C (60°F). However, you can expect a range, with minimum temperatures dipping to 1°C (33°F) and maximums reaching 36°C (96°F). Prepare for some wet days, as precipitation averages 16 mm (0.6 in) over 2 days. It's worth noting that the average humidity is quite high at 89%, creating a unique climate experience.
In December in Primero de Mayo, the average temperature is 16°C (60°F). Maximum temperatures can reach up to 36°C (96°F), while minimums can drop as low as 1°C (33°F). It's advisable to pack layers and be prepared for both warm days and cool nights while traveling during this month.
In Primero de Mayo in December, the precipitation amount is 16 mm (0.6 in) over a period of 2 days.
In Primero de Mayo in December, humidity is 89%. With an average temperature of 16°C (60°F), this humidity feels like a warm, muggy embrace that can quickly lead to discomfort while traveling, making even short walks feel exhausting and requiring frequent breaks to cool down and hydrate.
In Primero de Mayo in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the 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 | 14°C (58°F) | 8 mm (0.3 inches) | 83% | high |
| February Weather | 17°C (63°F) | 8 mm (0.3 inches) | 74% | very high |
| March Weather | 22°C (71°F) | 12 mm (0.5 inches) | 75% | very high |
| April Weather | 25°C (78°F) | 15 mm (0.6 inches) | 74% | extreme |
| May Weather | 29°C (84°F) | 40 mm (1.6 inches) | 79% | extreme |
| June Weather | 31°C (88°F) | 28 mm (1.1 inches) | 77% | extreme |
| July Weather | 31°C (89°F) | 47 mm (1.8 inches) | 64% | extreme |
| August Weather | 32°C (89°F) | 29 mm (1.1 inches) | 61% | extreme |
| September Weather | 28°C (83°F) | 97 mm (3.8 inches) | 77% | extreme |
| October Weather | 24°C (75°F) | 41 mm (1.6 inches) | 83% | very high |
| November Weather | 19°C (66°F) | 15 mm (0.6 inches) | 85% | high |
| December Weather | 16°C (60°F) | 16 mm (0.6 inches) | 89% | moderate |