Last updated: August 27, 2025
In December, the average temperature in San Salvador (Naranjillo), Mexico hovers around 13°C (57°F), with a minimum dipping to 0°C (32°F) and a maximum reaching 25°C (77°F). Expect about 51 mm (2.0 in) of precipitation spread over 9 days, and a notably high average humidity of 91%, making it a unique and refreshing month to experience!
In December in San Salvador (Naranjillo), the average temperature is 13°C (57°F). Maximums can reach 25°C (77°F) and minimums can be as low as 0°C (32°F). Be sure to pack layers to accommodate the varying temperatures throughout the day.
In San Salvador (Naranjillo) in December, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.
In San Salvador (Naranjillo) in December, humidity is 91%. With an average temperature of 13°C (57°F), this humidity feels like an uncomfortable dampness that clings to your skin, making outdoor activities less enjoyable and leading to a constant feeling of being weighed down.
In San Salvador (Naranjillo) in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Salvador (Naranjillo).
UV Risk Categories
Weather in San Salvador (Naranjillo) varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Salvador (Naranjillo), focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 88 mm (3.5 inches) | 88% | very high |
| February Weather | 15°C (58°F) | 64 mm (2.5 inches) | 86% | extreme |
| March Weather | 16°C (61°F) | 93 mm (3.7 inches) | 84% | extreme |
| April Weather | 18°C (65°F) | 133 mm (5.2 inches) | 81% | extreme |
| May Weather | 19°C (67°F) | 190 mm (7.5 inches) | 82% | extreme |
| June Weather | 19°C (66°F) | 262 mm (10.3 inches) | 81% | extreme |
| July Weather | 18°C (65°F) | 210 mm (8.3 inches) | 81% | extreme |
| August Weather | 18°C (65°F) | 291 mm (11.4 inches) | 82% | extreme |
| September Weather | 18°C (65°F) | 339 mm (13.3 inches) | 86% | extreme |
| October Weather | 17°C (63°F) | 217 mm (8.5 inches) | 90% | extreme |
| November Weather | 15°C (59°F) | 111 mm (4.4 inches) | 91% | very high |
| December Weather | 13°C (57°F) | 51 mm (2.0 inches) | 91% | very high |