Last updated: August 27, 2025
In December, the average temperature in Santo Andre, Portugal is a mild 13°C (55°F), with minimums dropping to 4°C (40°F) and maximums reaching 20°C (69°F). Expect around 52 mm (2.0 in) of precipitation spread over 8 days, and an average humidity of 81%. Enjoy the pleasant yet variable weather!
In December in Santo Andre, the average temperature is 13°C (55°F). Maximums can reach 20°C (69°F), while minimums can dip as low as 4°C (40°F). This mild climate makes Santo Andre an ideal destination for outdoor activities and sightseeing during this time of year.
In Santo Andre in December, the total precipitation amount is 52 mm (2.0 in) recorded over a span of 8 days.
In Santo Andre in December, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.
In Santo Andre 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 Santo Andre, you can check the information here.
UV Risk Categories
Weather in Santo Andre varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santo Andre, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (52°F) | 31 mm (1.2 inches) | 80% | moderate |
| February Weather | 13°C (55°F) | 55 mm (2.2 inches) | 73% | moderate |
| March Weather | 14°C (57°F) | 82 mm (3.2 inches) | 71% | high |
| April Weather | 15°C (59°F) | 70 mm (2.7 inches) | 69% | very high |
| May Weather | 18°C (65°F) | 27 mm (1.1 inches) | 69% | very high |
| June Weather | 19°C (67°F) | 9 mm (0.4 inches) | 67% | extreme |
| July Weather | 21°C (70°F) | 3 mm (0.1 inches) | 69% | very high |
| August Weather | 21°C (71°F) | 2 mm (0.1 inches) | 68% | very high |
| September Weather | 21°C (70°F) | 13 mm (0.5 inches) | 71% | very high |
| October Weather | 18°C (65°F) | 45 mm (1.8 inches) | 75% | high |
| November Weather | 15°C (59°F) | 62 mm (2.4 inches) | 78% | moderate |
| December Weather | 13°C (55°F) | 52 mm (2.0 inches) | 81% | moderate |