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September Weather in Waltham St Lawrence, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Waltham St Lawrence, United Kingdom hovers around 15°C (59°F). Expect a comfortable range with minimums dipping to 3°C (38°F) and maximum highs reaching 28°C (83°F). However, be prepared for some wet days, as precipitation totals about 47 mm (1.8 in) over 10 days, accompanied by an average humidity of 82%.

September Temperature in Waltham St Lawrence

In September in Waltham St Lawrence, the average temperature is 15°C (59°F). The maximum can reach 28°C (83°F), while the minimum can drop as low as 3°C (38°F). Overall, this means travelers can expect mild weather perfect for exploring the outdoors.

September Weather in Waltham St Lawrence: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Waltham St Lawrence, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waltham St Lawrence, September typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec414345495561656359534643
Data source: Temperature data for Waltham St Lawrence 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 Waltham St Lawrence

In Waltham St Lawrence in September, the total precipitation amount is 47 mm (1.8 in) spread over a period of 10 days.

September Precipitation Trends in Waltham St Lawrence

The chart displays monthly precipitation patterns in Waltham St Lawrence, 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 Waltham St Lawrence, September typically receives around 47 mm (1.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec515258346575666947925483
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Waltham St Lawrence

In Waltham St Lawrence 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 Waltham St Lawrence

This chart illustrates the average monthly humidity levels in Waltham St Lawrence, 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 Waltham St Lawrence 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 Waltham St Lawrence

In Waltham St Lawrence 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 Waltham St Lawrence, you can refer to this Hourly UV Index in Waltham St Lawrence.

Maximum UV Index Levels in Waltham St Lawrence for September

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

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

This table compares monthly weather conditions in Waltham St Lawrence, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)51 mm (2.0 inches)91%low
February Weather6°C (43°F)52 mm (2.0 inches)89%low
March Weather7°C (45°F)58 mm (2.3 inches)86%moderate
April Weather9°C (49°F)34 mm (1.4 inches)85%high
May Weather13°C (55°F)65 mm (2.6 inches)79%high
June Weather16°C (62°F)75 mm (2.9 inches)80%very high
July Weather18°C (65°F)66 mm (2.6 inches)71%very high
August Weather17°C (64°F)69 mm (2.7 inches)76%high
September Weather15°C (59°F)47 mm (1.8 inches)82%high
October Weather12°C (53°F)92 mm (3.6 inches)90%moderate
November Weather8°C (46°F)54 mm (2.1 inches)92%low
December Weather6°C (44°F)83 mm (3.2 inches)92%low

Compare Waltham St Lawrence's Climate with Cities Worldwide