September Weather in Dorchester on Thames, United Kingdom

Last updated: August 27, 2025

In Dorchester on Thames, United Kingdom, the average temperature in September hovers around 15°C (59°F), offering a mild climate. Expect a minimum of 3°C (37°F) and a pleasant maximum of 29°C (84°F). With 53 mm (2.1 in) of precipitation spread over 9 days, an average humidity level of 82% contributes to a refreshingly cool atmosphere. Enjoy the balance of warmth and moisture that makes September a unique time to experience this locale!

September Temperature in Dorchester on Thames

In September, in Dorchester on Thames, the average temperature is 15°C (59°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 3°C (37°F). It's a great time for travelers to enjoy mild weather and a variety of outdoor activities.

September Weather in Dorchester on Thames: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dorchester on Thames, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dorchester on Thames, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (84°F) and lows dropping to around 3°C (37°F).

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

September Precipitation in Dorchester on Thames

In Dorchester on Thames in September, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.

September Precipitation Trends in Dorchester on Thames

The chart displays monthly precipitation patterns in Dorchester on Thames, 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 Dorchester on Thames, September typically receives around 53 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 Dorchester on Thames

In Dorchester on Thames 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 Dorchester on Thames

This chart illustrates the average monthly humidity levels in Dorchester on Thames, 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 Dorchester on Thames 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 Dorchester on Thames

In Dorchester on Thames 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 Dorchester on Thames, you can refer to this Hourly UV Index in Dorchester on Thames.

Maximum UV Index Levels in Dorchester on Thames for September

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

Data source: Dorchester on Thames 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 Dorchester on Thames Compares to Other Months

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

This table compares monthly weather conditions in Dorchester on Thames, 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)	51 mm (2.0 inches)	91%	low
February Weather	6°C (43°F)	51 mm (2.0 inches)	89%	low
March Weather	7°C (45°F)	60 mm (2.4 inches)	86%	moderate
April Weather	9°C (49°F)	38 mm (1.5 inches)	85%	high
May Weather	12°C (54°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)	64 mm (2.5 inches)	71%	very high
August Weather	17°C (63°F)	71 mm (2.8 inches)	76%	high
September Weather	15°C (59°F)	53 mm (2.1 inches)	82%	high
October Weather	11°C (53°F)	95 mm (3.7 inches)	90%	moderate
November Weather	8°C (46°F)	57 mm (2.2 inches)	92%	low
December Weather	6°C (43°F)	83 mm (3.3 inches)	92%	low