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September Weather in Petersfield, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Petersfield, United Kingdom hovers around 15°C (59°F). You'll experience a minimum of 3°C (37°F) and a pleasant maximum of 27°C (81°F). Expect about 48 mm (1.9 in) of precipitation spread over 10 days, with an average humidity level of 82%. Enjoy the varied weather, and don't forget your umbrella!

September Temperature in Petersfield

In September in Petersfield, the average temperature is 15°C (59°F). Maximum temperatures can reach 27°C (81°F), while the minimum can drop to as low as 3°C (37°F). This makes it a great time for travelers to enjoy mild weather and explore outdoor activities.

September Weather in Petersfield: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Petersfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petersfield, September typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (81°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495561656359534744
Data source: Temperature data for Petersfield 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 Petersfield

In Petersfield in September, the precipitation amount is 48 mm (1.9 in) spread over a period of 10 days.

September Precipitation Trends in Petersfield

The chart displays monthly precipitation patterns in Petersfield, 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 Petersfield, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec525963367282647048986594
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Petersfield

In Petersfield 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 Petersfield

This chart illustrates the average monthly humidity levels in Petersfield, 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 Petersfield is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Petersfield

In Petersfield 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 Petersfield, you can refer to this Hourly UV Index in Petersfield.

Maximum UV Index Levels in Petersfield for September

The chart shows the monthly maximum UV Index (UVI) for Petersfield 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 Petersfield typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Petersfield 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 Petersfield Compares to Other Months

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

This table compares monthly weather conditions in Petersfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.1 inches)91%low
February Weather6°C (43°F)59 mm (2.3 inches)89%low
March Weather8°C (46°F)63 mm (2.5 inches)86%moderate
April Weather9°C (49°F)36 mm (1.4 inches)85%high
May Weather13°C (55°F)72 mm (2.8 inches)79%high
June Weather16°C (61°F)82 mm (3.2 inches)80%very high
July Weather18°C (65°F)64 mm (2.5 inches)71%very high
August Weather17°C (63°F)70 mm (2.7 inches)76%high
September Weather15°C (59°F)48 mm (1.9 inches)82%high
October Weather12°C (54°F)98 mm (3.8 inches)90%moderate
November Weather8°C (47°F)65 mm (2.6 inches)92%low
December Weather7°C (44°F)94 mm (3.7 inches)92%low

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