Last updated: August 27, 2025
In December, the average temperature in Sao Teotonio, Portugal hovers around 13°C (55°F), offering a mild climate for exploration. Expect temperature fluctuations with a minimum of 2°C (36°F) and a maximum of 21°C (70°F). Be prepared for light rain, as 50 mm (2.0 in) of precipitation is expected over 9 days. Additionally, the average humidity rests at a comfortable 81%, making it an ideal time for outdoor activities!
In December in Sao Teotonio, the average temperature is 13°C (55°F). The maximum can reach 21°C (70°F) and the minimum can be as low as 2°C (36°F). This makes it a great time to explore outdoor activities while packing for both warm and cooler weather.
In Sao Teotonio in December, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.
In Sao Teotonio 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 Sao Teotonio 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 Sao Teotonio, you can check the information here.
UV Risk Categories
Weather in Sao Teotonio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Teotonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (52°F) | 28 mm (1.1 inches) | 80% | moderate |
| February Weather | 13°C (55°F) | 50 mm (2.0 inches) | 73% | moderate |
| March Weather | 14°C (57°F) | 83 mm (3.3 inches) | 71% | high |
| April Weather | 15°C (59°F) | 65 mm (2.5 inches) | 69% | very high |
| May Weather | 18°C (65°F) | 25 mm (1.0 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 | 22°C (71°F) | 2 mm (0.1 inches) | 68% | very high |
| September Weather | 21°C (70°F) | 9 mm (0.4 inches) | 71% | very high |
| October Weather | 19°C (66°F) | 37 mm (1.4 inches) | 75% | high |
| November Weather | 15°C (59°F) | 57 mm (2.2 inches) | 78% | moderate |
| December Weather | 13°C (55°F) | 50 mm (2.0 inches) | 81% | moderate |