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September Weather in Barnham, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Barnham, United Kingdom hovers around 16°C (62°F), with a comfortable range between 9°C (49°F) and 23°C (74°F). Expect a total precipitation of 61 mm (2.4 in) spread over 10 days, contributing to an average humidity level of 82%. This makes for a refreshing, albeit slightly damp, climate perfect for cozy indoor activities or exploring the vibrant outdoors.

September Temperature in Barnham

In September in Barnham, the average temperature is 16°C (62°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop to as low as 9°C (49°F). This makes it a pleasant time for travelers to enjoy outdoor activities while being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Barnham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barnham, September typically has an average temperature of 16°C (62°F), with highs reaching up to 23°C (74°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec444546495460646461575147
Data source: Temperature data for Barnham 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 Barnham

In Barnham in September, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.

September Precipitation Trends in Barnham

The chart displays monthly precipitation patterns in Barnham, 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 Barnham, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec75827331517159836112698131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barnham

In Barnham in September, humidity is 82%. With an average temperature of 16°C (62°F), this humidity feels like a blanket of warmth enveloping you, making traveling feel sticky and heavy as you navigate through the air.

September Average Humidity in Barnham

This chart illustrates the average monthly humidity levels in Barnham, 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 Barnham 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 Barnham

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

Maximum UV Index Levels in Barnham for September

The chart shows the monthly maximum UV Index (UVI) for Barnham 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 Barnham typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Barnham 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 Barnham Compares to Other Months

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

This table compares monthly weather conditions in Barnham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)75 mm (2.9 inches)91%low
February Weather7°C (45°F)82 mm (3.2 inches)89%low
March Weather8°C (46°F)73 mm (2.9 inches)86%moderate
April Weather9°C (49°F)31 mm (1.2 inches)85%high
May Weather12°C (54°F)51 mm (2.0 inches)79%high
June Weather15°C (60°F)70 mm (2.8 inches)80%very high
July Weather18°C (64°F)59 mm (2.3 inches)71%very high
August Weather18°C (64°F)83 mm (3.3 inches)76%high
September Weather16°C (62°F)61 mm (2.4 inches)82%high
October Weather14°C (57°F)126 mm (5.0 inches)90%moderate
November Weather10°C (51°F)98 mm (3.9 inches)92%low
December Weather8°C (47°F)131 mm (5.2 inches)92%low

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