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September Weather in Bonsall, United Kingdom

Last updated: August 27, 2025

In Bonsall, United Kingdom, the average temperature in September is a comfortable 14°C (57°F), with minimum temperatures dipping to 3°C (37°F) and maximums reaching up to 28°C (83°F). Expect a total precipitation of 62 mm (2.5 in) across about 11 days, contributing to a rather high average humidity of 85%.

September Temperature in Bonsall

In September in Bonsall, the average temperature is 14°C (57°F). Maximums can reach 28°C (83°F), while minimums can drop as low as 3°C (37°F). This variation makes it essential to pack layers for your travels.

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

The chart illustrates September temperature patterns in Bonsall, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bonsall, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (83°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec404144475359636157514542
Data source: Temperature data for Bonsall 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 Bonsall

In Bonsall in September, the precipitation amount is 62 mm (2.5 in), occurring over a span of 11 days.

September Precipitation Trends in Bonsall

The chart displays monthly precipitation patterns in Bonsall, 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 Bonsall, September typically receives around 62 mm (2.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec566567396274807662856584
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bonsall

In Bonsall in September, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

September Average Humidity in Bonsall

This chart illustrates the average monthly humidity levels in Bonsall, 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 Bonsall is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%80%81%76%77%85%90%92%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bonsall

In Bonsall 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 Bonsall.

Maximum UV Index Levels in Bonsall for September

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

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

This table compares monthly weather conditions in Bonsall, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)56 mm (2.2 inches)90%low
February Weather5°C (42°F)65 mm (2.6 inches)88%low
March Weather7°C (44°F)67 mm (2.6 inches)86%moderate
April Weather8°C (48°F)39 mm (1.6 inches)84%moderate
May Weather12°C (53°F)62 mm (2.4 inches)80%high
June Weather15°C (59°F)74 mm (2.9 inches)81%very high
July Weather17°C (63°F)80 mm (3.1 inches)76%very high
August Weather16°C (62°F)76 mm (3.0 inches)77%high
September Weather14°C (57°F)62 mm (2.5 inches)85%moderate
October Weather11°C (52°F)85 mm (3.3 inches)90%moderate
November Weather7°C (45°F)65 mm (2.6 inches)92%low
December Weather5°C (42°F)84 mm (3.3 inches)90%low

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