Last updated: March 2, 2024
The weather in Zarcero, Costa Rica, during December is characterized by an average temperature of 20°C (68°F). Highs can soar to 25°C (78°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Zarcero throughout December hovers around 74%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Zarcero averages 121 mm (4.7 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 11 hours 31 minutes of daylight, with the sun shining for approximately 8 hours 25 minutes each day. Additionally, there is a 33% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Zarcero reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 15 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 | 1 | 3 | 6 | 9 | 10 | 10 | 9 | 6 | 3 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||