Last updated: March 2, 2024
The weather in Ribeira Seca, Portugal, during May is characterized by an average temperature of 17°C (62°F). Highs can soar to 21°C (70°F), while lows may dip to 12°C (54°F). Typically, the humidity level in Ribeira Seca throughout May hovers around 81%.
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Average temperature
Maximum temperature
Humidity
In May, Ribeira Seca averages 68 mm (2.7 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 14 hours 12 minutes of daylight, with the sun shining for approximately 11 hours 2 minutes each day. Additionally, there is a 35% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Ribeira Seca reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 2 | 4 | 7 | 9 | 10 | 10 | 9 | 7 | 4 | 2 | 1 |
| 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 | ||||||