September Weather in Swaffham Prior, United Kingdom

Last updated: August 27, 2025

In Swaffham Prior, United Kingdom, the average temperature in September hovers around 15°C (59°F), with a minimum dipping to 3°C (37°F) and a pleasant maximum reaching 29°C (84°F). Expect about 56 mm (2.2 in) of precipitation spread over 11 days, contributing to an average humidity of 84%. Whether you're exploring the outdoors or enjoying indoor activities, be prepared for a mix of warm and cooler days!

September Temperature in Swaffham Prior

In September, in Swaffham Prior, 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 Swaffham Prior: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Swaffham Prior, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swaffham Prior, 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 Swaffham Prior generated using information from the Copernicus Climate Change Service.

September Precipitation in Swaffham Prior

In Swaffham Prior in September, the precipitation amount is 56 mm (2.2 in) over the course of 11 days.

September Precipitation Trends in Swaffham Prior

The chart displays monthly precipitation patterns in Swaffham Prior, 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 Swaffham Prior, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 11 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 Swaffham Prior

In Swaffham Prior in September, humidity is 84%. With an average temperature of 15°C (59°F), this humidity feels like an oppressive blanket wrapping around you, making it challenging to enjoy outdoor activities and travel comfortably.

September Average Humidity in Swaffham Prior

This chart illustrates the average monthly humidity levels in Swaffham Prior, 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 Swaffham Prior is approximately 84%, 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 Swaffham Prior

In Swaffham Prior 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 Swaffham Prior.

Maximum UV Index Levels in Swaffham Prior for September

The chart shows the monthly maximum UV Index (UVI) for Swaffham Prior 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 Swaffham Prior typically reaches 5, which falls under the moderate exposure category.

Data source: Swaffham Prior 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 Swaffham Prior Compares to Other Months

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

This table compares monthly weather conditions in Swaffham Prior, 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)	89%	low
February Weather	6°C (43°F)	50 mm (2.0 inches)	87%	low
March Weather	7°C (45°F)	53 mm (2.1 inches)	86%	moderate
April Weather	9°C (49°F)	32 mm (1.3 inches)	85%	moderate
May Weather	13°C (55°F)	66 mm (2.6 inches)	83%	high
June Weather	16°C (61°F)	74 mm (2.9 inches)	83%	very high
July Weather	18°C (65°F)	68 mm (2.7 inches)	79%	very high
August Weather	18°C (64°F)	77 mm (3.0 inches)	78%	high
September Weather	15°C (59°F)	56 mm (2.2 inches)	84%	moderate
October Weather	12°C (53°F)	81 mm (3.2 inches)	88%	moderate
November Weather	8°C (46°F)	48 mm (1.9 inches)	89%	low
December Weather	6°C (43°F)	83 mm (3.3 inches)	88%	low