Last updated: August 27, 2025
In Santa Marta de Penaguiao, Portugal, the average temperature in December hovers around 8°C (46°F), with minimums dipping to -2°C (28°F) and highs reaching a comfortable 16°C (61°F). Expect about 140 mm (5.5 in) of precipitation spread across 13 days, contributing to a high average humidity of 87%. Prepare for a chilly and damp month!
In December in Santa Marta de Penaguiao, the average temperature is 8°C (46°F). The maximum can reach 16°C (61°F), while the minimum can drop as low as -2°C (28°F). Travelers should be prepared for a range of cool weather conditions during this time.
In Santa Marta de Penaguiao in December, the total precipitation amount is 140 mm (5.5 in) over the course of 13 days.
In Santa Marta de Penaguiao in December, humidity is 87%. With an average temperature of 8°C (46°F), this humidity feels like a chilly, damp fog clinging to your skin, making outdoor activities a bit uncomfortable and causing even mild exertion to leave you feeling clammy and cold.
In Santa Marta de Penaguiao in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Santa Marta de Penaguiao, you can visit Hourly UV Index in Santa Marta de Penaguiao.
UV Risk Categories
Weather in Santa Marta de Penaguiao varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Marta de Penaguiao, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 60 mm (2.4 inches) | 87% | moderate |
| February Weather | 8°C (47°F) | 107 mm (4.2 inches) | 81% | moderate |
| March Weather | 10°C (49°F) | 117 mm (4.6 inches) | 78% | high |
| April Weather | 12°C (53°F) | 115 mm (4.5 inches) | 79% | very high |
| May Weather | 15°C (60°F) | 54 mm (2.1 inches) | 78% | very high |
| June Weather | 18°C (64°F) | 46 mm (1.8 inches) | 71% | extreme |
| July Weather | 20°C (69°F) | 22 mm (0.9 inches) | 63% | very high |
| August Weather | 20°C (69°F) | 16 mm (0.6 inches) | 64% | very high |
| September Weather | 18°C (65°F) | 37 mm (1.5 inches) | 71% | very high |
| October Weather | 14°C (58°F) | 81 mm (3.2 inches) | 79% | high |
| November Weather | 9°C (49°F) | 108 mm (4.3 inches) | 86% | moderate |
| December Weather | 8°C (46°F) | 140 mm (5.5 inches) | 87% | low |