September Weather in Amersham on the Hill, United Kingdom

Last updated: August 27, 2025

In September the average temperature in Amersham on the Hill, United Kingdom is a comfortable 15°C (59°F). Expect a range that can dip to a minimum of 3°C (38°F) and rise to a maximum of 28°C (83°F). During this month, you might encounter 51 mm (2.0 in) of precipitation spread over 10 days, contributing to an average humidity level of 82%. Prepare for a mix of weather as you explore!

September Temperature in Amersham on the Hill

In September in Amersham on the Hill, the average temperature is 15°C (59°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as 3°C (38°F). Overall, this means travelers can expect mild weather perfect for exploring the outdoors.

September Weather in Amersham on the Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Amersham on the Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Amersham on the Hill, September typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Amersham on the Hill

In Amersham on the Hill in September, the total precipitation amount is 51 mm (2.0 in) spread over a period of 10 days.

September Precipitation Trends in Amersham on the Hill

The chart displays monthly precipitation patterns in Amersham on the Hill, 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 Amersham on the Hill, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 10 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 Amersham on the Hill

In Amersham on the Hill in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in Amersham on the Hill

This chart illustrates the average monthly humidity levels in Amersham on the Hill, 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 Amersham on the Hill 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 Amersham on the Hill

In Amersham on the Hill 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 Amersham on the Hill, you can refer to this Hourly UV Index in Amersham on the Hill.

Maximum UV Index Levels in Amersham on the Hill for September

The chart shows the monthly maximum UV Index (UVI) for Amersham on the Hill 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 Amersham on the Hill typically reaches 6, which falls under the high exposure category.

Data source: Amersham on the Hill 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 Amersham on the Hill Compares to Other Months

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

This table compares monthly weather conditions in Amersham on the Hill, 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)	56 mm (2.2 inches)	91%	low
February Weather	6°C (43°F)	52 mm (2.0 inches)	89%	low
March Weather	7°C (45°F)	57 mm (2.2 inches)	86%	moderate
April Weather	9°C (49°F)	34 mm (1.3 inches)	85%	moderate
May Weather	13°C (55°F)	66 mm (2.6 inches)	79%	high
June Weather	16°C (61°F)	74 mm (2.9 inches)	80%	very high
July Weather	18°C (65°F)	67 mm (2.6 inches)	71%	very high
August Weather	17°C (64°F)	71 mm (2.8 inches)	76%	high
September Weather	15°C (59°F)	51 mm (2.0 inches)	82%	high
October Weather	11°C (53°F)	91 mm (3.6 inches)	90%	moderate
November Weather	8°C (46°F)	54 mm (2.1 inches)	92%	low
December Weather	6°C (43°F)	83 mm (3.3 inches)	92%	low