Last updated: March 2, 2024
The weather in Arenal, Colombia, during December is characterized by an average temperature of 28°C (82°F). Highs can soar to 34°C (94°F), while lows may dip to 23°C (73°F). Typically, the humidity level in Arenal throughout December hovers around 65%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Arenal averages 39 mm (1.5 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 11 hours 37 minutes of daylight, with the sun shining for approximately 10 hours 14 minutes each day. Additionally, there is a 34% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Arenal 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 | 5 | 8 | 10 | 10 | 9 | 7 | 4 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | VeryHigh | High | Moderate | Low | |||||||
| Time to burn | 45 min | 30 min | 15 min | 25 min | 30 min | 45 min | |||||||