Last updated: March 2, 2024
The weather in Trawsfynydd, United Kingdom, during September is characterized by an average temperature of 13°C (55°F). Highs can soar to 22°C (71°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Trawsfynydd throughout September hovers around 85%.
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Average temperature
Maximum temperature
Humidity
In September, Trawsfynydd averages 126 mm (5.0 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 12 hours 36 minutes of daylight, with the sun shining for approximately 10 hours 25 minutes each day. Additionally, there is a 19% probability of sunny days during this period.
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In September, the UV Index in Trawsfynydd reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 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 | 4 | 5 | 5 | 5 | 4 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||