Last updated: August 27, 2025
In Santa Cruz, Portugal, the average temperature in December hovers around 7°C (45°F), with a minimum dipping to -3°C (27°F) and a maximum reaching 16°C (61°F). Expect 114 mm (4.5 in) of precipitation spread over 11 days, contributing to an average humidity level of 87%.
In December in Santa Cruz, the average temperature is 7°C (45°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -3°C (27°F). Be prepared for a mix of cool and chilly weather, ideal for layering and enjoying outdoor activities.
In Santa Cruz in December, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.
In Santa Cruz in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.
In Santa Cruz 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 Cruz, you can visit Hourly UV Index in Santa Cruz.
UV Risk Categories
Weather in Santa Cruz varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Cruz, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 43 mm (1.7 inches) | 87% | low |
| February Weather | 8°C (46°F) | 87 mm (3.4 inches) | 81% | moderate |
| March Weather | 9°C (48°F) | 90 mm (3.5 inches) | 78% | high |
| April Weather | 11°C (52°F) | 90 mm (3.5 inches) | 79% | very high |
| May Weather | 15°C (59°F) | 49 mm (1.9 inches) | 78% | very high |
| June Weather | 18°C (64°F) | 39 mm (1.5 inches) | 71% | extreme |
| July Weather | 21°C (69°F) | 19 mm (0.8 inches) | 63% | very high |
| August Weather | 20°C (69°F) | 15 mm (0.6 inches) | 64% | very high |
| September Weather | 18°C (65°F) | 30 mm (1.2 inches) | 71% | very high |
| October Weather | 14°C (57°F) | 71 mm (2.8 inches) | 79% | high |
| November Weather | 9°C (48°F) | 80 mm (3.2 inches) | 86% | moderate |
| December Weather | 7°C (45°F) | 114 mm (4.5 inches) | 87% | low |