Last updated: March 2, 2024
The weather in Bayamon, Puerto Rico, during December is characterized by an average temperature of 26°C (78°F). Highs can soar to 30°C (85°F), while lows may dip to 23°C (73°F). Typically, the humidity level in Bayamon throughout December hovers around 76%.
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Average temperature
Maximum temperature
Humidity
In December, Bayamon averages 50 mm (2.0 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 11 hours 1 minutes of daylight, with the sun shining for approximately 10 hours 16 minutes each day. Additionally, there is a 64% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Bayamon reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 1 | 3 | 5 | 7 | 8 | 8 | 6 | 4 | 2 | 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 | ||||||