Last updated: August 27, 2025
In December, the average temperature in San Juan de la Nava, Spain hovers around 5°C (41°F), with a possibility of dropping to a chilly -4°C (24°F) and occasionally peaking at a comfortable 16°C (60°F). Expect 56 mm (2.2 in) of precipitation over 10 days, contributing to a significantly high average humidity of 90%. Whether you're layering up or planning indoor activities, be prepared for the moody weather of this season!
In December in San Juan de la Nava, the average temperature is 5°C (41°F). The maximum can reach 16°C (60°F), while the minimum can be as low as -4°C (24°F). Be prepared for a range of temperatures if you're planning to travel during this time.
In San Juan de la Nava in December, the precipitation amount is 56 mm (2.2 in) over the course of 10 days.
In San Juan de la Nava in December, humidity is 90%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that clings to your skin, making travel feel more strenuous as you navigate the cold air mixed with moisture, potentially leaving you feeling sluggish and uncomfortable.
In San Juan de la Nava in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in San Juan de la Nava, you can check the information here.
UV Risk Categories
Weather in San Juan de la Nava varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Juan de la Nava, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 35 mm (1.4 inches) | 90% | moderate |
| February Weather | 6°C (42°F) | 45 mm (1.8 inches) | 86% | moderate |
| March Weather | 7°C (45°F) | 66 mm (2.6 inches) | 79% | high |
| April Weather | 10°C (49°F) | 85 mm (3.3 inches) | 74% | very high |
| May Weather | 15°C (58°F) | 48 mm (1.9 inches) | 71% | very high |
| June Weather | 19°C (66°F) | 36 mm (1.4 inches) | 63% | extreme |
| July Weather | 22°C (73°F) | 19 mm (0.7 inches) | 59% | extreme |
| August Weather | 22°C (73°F) | 16 mm (0.6 inches) | 58% | very high |
| September Weather | 18°C (64°F) | 44 mm (1.7 inches) | 65% | very high |
| October Weather | 13°C (55°F) | 61 mm (2.4 inches) | 77% | high |
| November Weather | 7°C (44°F) | 66 mm (2.6 inches) | 87% | moderate |
| December Weather | 5°C (41°F) | 56 mm (2.2 inches) | 90% | moderate |