Last updated: March 2, 2024
The weather in Siesta Key, United States, during May is characterized by an average temperature of 25°C (78°F). Highs can soar to 31°C (88°F), while lows may dip to 19°C (67°F). Typically, the humidity level in Siesta Key throughout May hovers around 76%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Siesta Key averages 109 mm (4.3 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 13 hours 30 minutes of daylight, with the sun shining for approximately 10 hours 44 minutes each day. Additionally, there is a 58% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Siesta Key reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 1 | 3 | 5 | 8 | 10 | 12 | 11 | 9 | 7 | 4 | 2 | 1 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||