September Weather in Box, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Box, United Kingdom hovers around 14°C (58°F), with fluctuations ranging from a chilly 2°C (37°F) to a warm 29°C (84°F). Expect about 54 mm (2.1 in) of precipitation spread over 9 days, coupled with a notably high average humidity of 82%.

September Temperature in Box

In September, in Box, the average temperature is 14°C (58°F). The maximum can reach 29°C (84°F), and the minimum can be as low as 2°C (37°F). This makes Box a great destination for travelers seeking a mix of mild weather and occasional warmth during September.

September Weather in Box: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Box, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Box, September typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (37°F).

Data source: Temperature data for Box generated using information from the Copernicus Climate Change Service.

September Precipitation in Box

In Box in September, the precipitation amount is 54 mm (2.1 in) over a span of 9 days.

September Precipitation Trends in Box

The chart displays monthly precipitation patterns in Box, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Box, September typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Box

In Box in September, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

September Average Humidity in Box

This chart illustrates the average monthly humidity levels in Box, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Box is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Box

In Box 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 Box, you can refer to this Hourly UV Index in Box.

Maximum UV Index Levels in Box for September

The chart shows the monthly maximum UV Index (UVI) for Box in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Box typically reaches 6, which falls under the high exposure category.

Data source: Box September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Box Compares to Other Months

Weather in Box varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Box, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Box, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	57 mm (2.3 inches)	91%	low
February Weather	6°C (43°F)	66 mm (2.6 inches)	89%	low
March Weather	7°C (45°F)	72 mm (2.8 inches)	86%	moderate
April Weather	9°C (49°F)	48 mm (1.9 inches)	85%	moderate
May Weather	12°C (54°F)	74 mm (2.9 inches)	79%	high
June Weather	16°C (61°F)	72 mm (2.8 inches)	80%	very high
July Weather	18°C (64°F)	67 mm (2.6 inches)	71%	very high
August Weather	17°C (62°F)	76 mm (3.0 inches)	76%	high
September Weather	14°C (58°F)	54 mm (2.1 inches)	82%	high
October Weather	11°C (53°F)	104 mm (4.1 inches)	90%	moderate
November Weather	8°C (46°F)	65 mm (2.5 inches)	92%	low
December Weather	6°C (44°F)	90 mm (3.6 inches)	92%	low