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September Weather in Saint Peters, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Saint Peters, United Kingdom is a comfortable 16°C (62°F), with minimums dipping to 10°C (50°F) and reaching a pleasant maximum of 22°C (72°F). Expect 56 mm (2.2 in) of precipitation over about 10 days, paired with an average humidity of 80%. Perfect weather for an adventurous getaway or a cozy retreat!

September Temperature in Saint Peters

In September in Saint Peters, the average temperature is 16°C (62°F). Maximum temperatures can reach 22°C (72°F), while the minimum can drop to as low as 10°C (50°F). Travelers should be prepared for mild weather, making it an ideal time for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Saint Peters, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Peters, September typically has an average temperature of 16°C (62°F), with highs reaching up to 22°C (72°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec444446495460646461575046
Data source: Temperature data for Saint Peters generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Saint Peters

In Saint Peters in September, the precipitation amount is 56 mm (2.2 in) over the course of 10 days.

September Precipitation Trends in Saint Peters

The chart displays monthly precipitation patterns in Saint Peters, 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 Saint Peters, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec70705826585455735610780121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint Peters

In Saint Peters in September humidity is 80%. With an average temperature of 16°C (62°F), this humidity feels like a warm, muggy embrace, making travel slightly uncomfortable as the air hangs heavy, necessitating frequent hydration and light clothing to stay cool and refreshed.

September Average Humidity in Saint Peters

This chart illustrates the average monthly humidity levels in Saint Peters, 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 Saint Peters is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint Peters

In Saint Peters 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 Saint Peters.

Maximum UV Index Levels in Saint Peters for September

The chart shows the monthly maximum UV Index (UVI) for Saint Peters 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 Saint Peters typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Saint Peters 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 Saint Peters Compares to Other Months

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

This table compares monthly weather conditions in Saint Peters, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)70 mm (2.7 inches)91%low
February Weather7°C (45°F)70 mm (2.7 inches)89%low
March Weather8°C (46°F)58 mm (2.3 inches)86%moderate
April Weather9°C (49°F)26 mm (1.0 inches)85%moderate
May Weather12°C (54°F)58 mm (2.3 inches)82%high
June Weather15°C (60°F)54 mm (2.1 inches)81%very high
July Weather18°C (64°F)55 mm (2.2 inches)76%very high
August Weather18°C (65°F)73 mm (2.9 inches)73%high
September Weather16°C (62°F)56 mm (2.2 inches)80%moderate
October Weather14°C (57°F)107 mm (4.2 inches)89%moderate
November Weather10°C (51°F)80 mm (3.1 inches)92%low
December Weather8°C (47°F)121 mm (4.8 inches)92%low

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