Last updated: August 27, 2025
In September, the average temperature in Barnsley, United Kingdom hovers around 13°C (56°F), offering a mild climate for visitors. Temperatures can range significantly, with minimums of 4°C (39°F) and maximums reaching 28°C (82°F). However, it's not all sunshine, as you'll likely encounter 72 mm (2.8 in) of precipitation spread over 12 days. Expect a high average humidity of 85%, which adds a touch of dampness to the air.
In September in Barnsley, the average temperature is 13°C (56°F). The maximum can reach 28°C (82°F), while the minimum can drop as low as 4°C (39°F). This makes Barnsley an ideal destination for travelers seeking mild weather with a pleasant range of temperatures.
In Barnsley in September, the total precipitation amount is 72 mm (2.8 in) over the course of 12 days.
In Barnsley in September humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.
In Barnsley in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Barnsley.
UV Risk Categories
Weather in Barnsley varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Barnsley, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 59 mm (2.3 inches) | 90% | low |
| February Weather | 5°C (41°F) | 79 mm (3.1 inches) | 88% | low |
| March Weather | 6°C (43°F) | 80 mm (3.2 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 44 mm (1.7 inches) | 84% | moderate |
| May Weather | 11°C (53°F) | 69 mm (2.7 inches) | 80% | high |
| June Weather | 15°C (59°F) | 89 mm (3.5 inches) | 81% | very high |
| July Weather | 16°C (62°F) | 94 mm (3.7 inches) | 76% | very high |
| August Weather | 16°C (61°F) | 91 mm (3.6 inches) | 77% | high |
| September Weather | 13°C (56°F) | 72 mm (2.8 inches) | 85% | moderate |
| October Weather | 10°C (51°F) | 91 mm (3.6 inches) | 90% | moderate |
| November Weather | 7°C (45°F) | 71 mm (2.8 inches) | 92% | low |
| December Weather | 5°C (41°F) | 85 mm (3.3 inches) | 90% | low |