Last updated: August 23, 2025
In December, the average temperature in San Rafael, Costa Rica hovers around 20°C (68°F), offering a pleasant climate for outdoor activities. Expect a minimum of 15°C (58°F) and a maximum of 26°C (80°F), making it comfortable yet variable. However, be prepared for some wet days, as the region experiences approximately 63 mm (2.5 in) of precipitation over 11 days. With an average humidity of 72%, it’s ideal to strike a balance between enjoying the warmth and staying refreshed!
In December in San Rafael, the average temperature is 20°C (68°F). Maximum temperatures can reach up to 26°C (80°F), while minimums can dip as low as 15°C (58°F). This pleasant climate makes it an ideal destination for travelers seeking mild weather and enjoyable outdoor activities.
In San Rafael in December, the precipitation amount is 63 mm (2.5 in) during a total of 11 days.
In San Rafael in December humidity is 72%. With an average temperature of 20°C (68°F), this humidity feels like a heavy blanket enveloping you, making every step slightly more laborious and the air thick with moisture, which can be uncomfortable for traveling.
In San Rafael in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Rafael.
UV Risk Categories
Weather in San Rafael varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Rafael, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 20°C (68°F) | 32 mm (1.3 inches) | 68% | extreme |
| February Weather | 20°C (69°F) | 13 mm (0.5 inches) | 68% | extreme |
| March Weather | 21°C (70°F) | 15 mm (0.6 inches) | 66% | extreme |
| April Weather | 21°C (70°F) | 79 mm (3.1 inches) | 67% | extreme |
| May Weather | 21°C (70°F) | 391 mm (15.4 inches) | 69% | extreme |
| June Weather | 21°C (70°F) | 351 mm (13.8 inches) | 84% | extreme |
| July Weather | 21°C (69°F) | 233 mm (9.2 inches) | 85% | extreme |
| August Weather | 20°C (69°F) | 331 mm (13.0 inches) | 82% | extreme |
| September Weather | 20°C (69°F) | 436 mm (17.2 inches) | 81% | extreme |
| October Weather | 20°C (68°F) | 570 mm (22.4 inches) | 80% | extreme |
| November Weather | 20°C (68°F) | 209 mm (8.2 inches) | 80% | extreme |
| December Weather | 20°C (68°F) | 63 mm (2.5 inches) | 72% | very high |