Last updated: March 2, 2024
The weather in Portstewart, United Kingdom, during May is characterized by an average temperature of 10°C (50°F). Highs can soar to 14°C (58°F), while lows may dip to 6°C (44°F). Typically, the humidity level in Portstewart throughout May hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Portstewart averages 72 mm (2.9 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 16 hours 11 minutes of daylight, with the sun shining for approximately 13 hours 3 minutes each day. Additionally, there is a 36% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Portstewart reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 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 | 2 | 2 | 4 | 5 | 6 | 6 | 6 | 6 | 4 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||