Last updated: August 23, 2025
In August, the average temperature in San Rafael, Costa Rica hovers around 20°C (69°F). Expect a comfortable range, with minimums dipping to 16°C (60°F) and maximums peaking at 28°C (82°F). However, don't forget your umbrella, as you'll likely experience 331 mm (13.0 in) of precipitation spread over 26 days, coupled with an average humidity of 82%.
In August in San Rafael, the average temperature is 20°C (69°F), with maximums reaching 28°C (82°F) and minimums dipping as low as 16°C (60°F). This mild climate makes San Rafael an ideal destination for travelers seeking pleasant weather and comfortable conditions.
In San Rafael in August, the precipitation amount is 331 mm (13.0 in) spread over 26 days.
In San Rafael in August humidity is 82%. With an average temperature of 20°C (69°F), this humidity feels like a warm, sticky embrace that clings to your skin, making it necessary to stay hydrated while exploring the sights.
In San Rafael in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For 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 August’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 |