Last updated: March 2, 2024
The weather in Guayanilla, Puerto Rico, during May is characterized by an average temperature of 25°C (78°F). Highs can soar to 29°C (84°F), while lows may dip to 23°C (73°F). Typically, the humidity level in Guayanilla throughout May hovers around 76%.
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Average temperature
Maximum temperature
Humidity
In May, Guayanilla averages 67 mm (2.6 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 12 hours 58 minutes of daylight, with the sun shining for approximately 11 hours 39 minutes each day. Additionally, there is a 56% probability of sunny days during this period.
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Rainy days
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Chance of sun
In May, the UV Index in Guayanilla reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 1 | 3 | 6 | 9 | 12 | 14 | 13 | 11 | 7 | 4 | 2 | 1 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 25 min | 30 min | 45 min | |||||