September Weather in Terrington Saint John, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Terrington Saint John, United Kingdom is a pleasant 15°C (59°F). You'll experience a range of temperatures, with a minimum of 3°C (38°F) and a maximum reaching 29°C (84°F). Expect 64 mm (2.5 in) of precipitation spread over about 11 days, contributing to an average humidity of 84%. Whether you're enjoying the cooler mornings or warm afternoons, it's a month filled with diverse weather!

September Temperature in Terrington Saint John

In September in Terrington Saint John, 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 (38°F). This makes it a great time to explore Terrington Saint John, as you can enjoy mild weather with a mix of pleasant warm days and cooler evenings.

September Weather in Terrington Saint John: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Terrington Saint John, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Terrington Saint John, 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 (38°F).

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

September Precipitation in Terrington Saint John

In Terrington Saint John in September, the total precipitation amount is 64 mm (2.5 in) spread over 11 days.

September Precipitation Trends in Terrington Saint John

The chart displays monthly precipitation patterns in Terrington Saint John, 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 Terrington Saint John, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Terrington Saint John

In Terrington Saint John 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 Terrington Saint John

This chart illustrates the average monthly humidity levels in Terrington Saint John, 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 Terrington Saint John 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 Terrington Saint John

In Terrington Saint John 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 Terrington Saint John.

Maximum UV Index Levels in Terrington Saint John for September

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

Data source: Terrington Saint John 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 Terrington Saint John Compares to Other Months

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

This table compares monthly weather conditions in Terrington Saint John, 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)	46 mm (1.8 inches)	89%	low
February Weather	6°C (43°F)	55 mm (2.2 inches)	87%	low
March Weather	7°C (45°F)	56 mm (2.2 inches)	86%	moderate
April Weather	9°C (49°F)	33 mm (1.3 inches)	85%	moderate
May Weather	12°C (55°F)	66 mm (2.6 inches)	83%	high
June Weather	16°C (61°F)	76 mm (3.0 inches)	83%	very high
July Weather	18°C (65°F)	67 mm (2.6 inches)	79%	very high
August Weather	18°C (64°F)	78 mm (3.1 inches)	78%	high
September Weather	15°C (59°F)	64 mm (2.5 inches)	84%	moderate
October Weather	12°C (53°F)	78 mm (3.1 inches)	88%	moderate
November Weather	8°C (47°F)	50 mm (2.0 inches)	89%	low
December Weather	6°C (43°F)	76 mm (3.0 inches)	88%	low