Last updated: August 23, 2025
In August, the average temperature in San Rafael Arriba, Costa Rica hovers around 19°C (66°F). Expect a comfortable climate where temperatures can dip to a minimum of 15°C (59°F) and peak at a pleasant 26°C (79°F). With 304 mm (12.0 in) of rain spread over 28 days, don’t forget your umbrella! The atmosphere is quite humid, with an average humidity level of 82%, adding to the area's lush, inviting charm.
In August in San Rafael Arriba, the average temperature is 19°C (66°F). Maximums can reach 26°C (79°F), and minimums can be as low as 15°C (59°F). This mild weather makes it an ideal time for travelers to explore and enjoy outdoor activities.
In San Rafael Arriba in August, the total precipitation amount reaches 304 mm (12.0 in) over a span of 28 days.
In San Rafael Arriba in August humidity is 82%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you might find yourself constantly seeking shade or a cool breeze.
In San Rafael Arriba in August, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Rafael Arriba, you can check here.
UV Risk Categories
Weather in San Rafael Arriba varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Rafael Arriba, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (63°F) | 93 mm (3.7 inches) | 68% | extreme |
| February Weather | 17°C (64°F) | 43 mm (1.7 inches) | 68% | extreme |
| March Weather | 18°C (64°F) | 49 mm (1.9 inches) | 66% | extreme |
| April Weather | 19°C (66°F) | 113 mm (4.4 inches) | 67% | extreme |
| May Weather | 19°C (67°F) | 425 mm (16.7 inches) | 69% | extreme |
| June Weather | 19°C (67°F) | 341 mm (13.4 inches) | 84% | extreme |
| July Weather | 19°C (66°F) | 266 mm (10.5 inches) | 85% | extreme |
| August Weather | 19°C (66°F) | 304 mm (12.0 inches) | 82% | extreme |
| September Weather | 19°C (66°F) | 379 mm (14.9 inches) | 81% | extreme |
| October Weather | 19°C (66°F) | 517 mm (20.4 inches) | 80% | extreme |
| November Weather | 18°C (65°F) | 260 mm (10.3 inches) | 80% | extreme |
| December Weather | 18°C (64°F) | 156 mm (6.1 inches) | 72% | extreme |