Last updated: March 2, 2024
The weather in Portstewart, United Kingdom, during August is characterized by an average temperature of 14°C (58°F). Highs can soar to 18°C (64°F), while lows may dip to 12°C (53°F). Typically, the humidity level in Portstewart throughout August hovers around 86%.
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Average temperature
Maximum temperature
Humidity
In August, Portstewart averages 146 mm (5.7 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 14 hours 51 minutes of daylight, with the sun shining for approximately 11 hours 31 minutes each day. Additionally, there is a 19% probability of sunny days during this period.
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Chance of sun
In August, 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 | 1 | 2 | 3 | 5 | 6 | 6 | 6 | 6 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||