Last updated: March 2, 2024
The weather in Buenos Aires, Costa Rica, during December is characterized by an average temperature of 19°C (66°F). Highs can soar to 25°C (77°F), while lows may dip to 13°C (55°F). Typically, the humidity level in Buenos Aires throughout December hovers around 72%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Buenos Aires averages 86 mm (3.4 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 11 hours 35 minutes of daylight, with the sun shining for approximately 9 hours 42 minutes each day. Additionally, there is a 43% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Buenos Aires reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 2 | 4 | 6 | 9 | 11 | 11 | 9 | 6 | 3 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||