Last updated: August 27, 2025
In December, the average temperature in Santa Cruz da Graciosa, Portugal hovers around 17°C (63°F), with a range that can dip to a minimum of 12°C (54°F) and reach a maximum of 20°C (68°F). Be prepared for 99 mm (3.9 in) of precipitation spread over 13 days, contributing to an average humidity level of 85%.
In December in Santa Cruz da Graciosa, the average temperature is 17°C (63°F). The maximum can reach 20°C (68°F), while the minimum can be as low as 12°C (54°F). This mild weather makes Santa Cruz da Graciosa an ideal destination for travelers seeking comfortable temperatures and pleasant outdoor activities.
In Santa Cruz da Graciosa in December, the precipitation amount is 99 mm (3.9 in) over the course of 13 days.
In Santa Cruz da Graciosa in December humidity is 85%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit stifling and encouraging frequent breaks in shaded areas or air-conditioned spaces for travelers.
In Santa Cruz da Graciosa 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 Santa Cruz da Graciosa, you can check the information here.
UV Risk Categories
Weather in Santa Cruz da Graciosa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Cruz da Graciosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (61°F) | 81 mm (3.2 inches) | 84% | moderate |
| February Weather | 15°C (59°F) | 77 mm (3.0 inches) | 83% | moderate |
| March Weather | 15°C (59°F) | 53 mm (2.1 inches) | 85% | high |
| April Weather | 15°C (60°F) | 80 mm (3.1 inches) | 85% | very high |
| May Weather | 17°C (62°F) | 56 mm (2.2 inches) | 83% | very high |
| June Weather | 19°C (66°F) | 39 mm (1.5 inches) | 85% | extreme |
| July Weather | 21°C (70°F) | 30 mm (1.2 inches) | 86% | very high |
| August Weather | 22°C (73°F) | 54 mm (2.1 inches) | 83% | very high |
| September Weather | 22°C (72°F) | 51 mm (2.0 inches) | 83% | very high |
| October Weather | 20°C (69°F) | 76 mm (3.0 inches) | 79% | high |
| November Weather | 18°C (65°F) | 114 mm (4.5 inches) | 80% | moderate |
| December Weather | 17°C (63°F) | 99 mm (3.9 inches) | 85% | moderate |