Last updated: August 27, 2025
In September, the average temperature in Caersws, United Kingdom hovers around 12°C (55°F). Visitors can expect a minimum drop to 0°C (33°F) and a pleasant maximum of 26°C (80°F). The region sees about 89 mm (3.5 in) of precipitation spread over 14 days, contributing to an average humidity of 85%. Prepare for a mix of cool breezes and potential rain!
In September in Caersws, the average temperature is 12°C (55°F). The maximum can reach 26°C (80°F), while the minimum can be as low as 0°C (33°F). This varied climate makes Caersws an interesting destination for travelers looking to experience a range of weather conditions.
In Caersws in September, the precipitation amount is 89 mm (3.5 in) over a span of 14 days.
In Caersws in September humidity is 85%. With an average temperature of 12°C (55°F), this humidity feels like a thick, damp blanket wrapping around you, making every step feel heavier and less invigorating for traveling.
In Caersws in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Caersws, you can refer to this Hourly UV Index in Caersws.
UV Risk Categories
Weather in Caersws varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Caersws, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 82 mm (3.2 inches) | 89% | low |
| February Weather | 5°C (40°F) | 118 mm (4.6 inches) | 88% | low |
| March Weather | 5°C (42°F) | 118 mm (4.6 inches) | 86% | moderate |
| April Weather | 7°C (46°F) | 61 mm (2.4 inches) | 84% | high |
| May Weather | 10°C (51°F) | 84 mm (3.3 inches) | 79% | high |
| June Weather | 14°C (57°F) | 94 mm (3.7 inches) | 81% | very high |
| July Weather | 15°C (60°F) | 82 mm (3.2 inches) | 78% | very high |
| August Weather | 15°C (58°F) | 111 mm (4.4 inches) | 79% | high |
| September Weather | 12°C (55°F) | 89 mm (3.5 inches) | 85% | high |
| October Weather | 10°C (50°F) | 122 mm (4.8 inches) | 90% | moderate |
| November Weather | 7°C (44°F) | 103 mm (4.1 inches) | 91% | low |
| December Weather | 5°C (41°F) | 132 mm (5.2 inches) | 89% | low |