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September Weather in Long Riston, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Long Riston, United Kingdom hovers around 14°C (58°F), with daily temperatures ranging from a cool 5°C (42°F) to a warm 25°C (77°F). Expect about 66 mm (2.6 in) of rainfall spread across 12 days, contributing to a high humidity level of 85%.

September Temperature in Long Riston

In September, in Long Riston, the average temperature is 14°C (58°F). The maximum can reach 25°C (77°F), while the minimum can drop as low as 5°C (42°F). This makes Long Riston an ideal destination for travelers seeking comfortable weather for outdoor activities.

September Weather in Long Riston: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Long Riston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Long Riston, September typically has an average temperature of 14°C (58°F), with highs reaching up to 25°C (77°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec414244475358626258534642
Data source: Temperature data for Long Riston 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 Long Riston

In Long Riston in September, the precipitation amount is 66 mm (2.6 in) over the course of 12 days.

September Precipitation Trends in Long Riston

The chart displays monthly precipitation patterns in Long Riston, 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 Long Riston, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec486463326681738566867076
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Long Riston

In Long Riston in September, humidity is 85%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making even short walks feel heavy and exhausting for traveling.

September Average Humidity in Long Riston

This chart illustrates the average monthly humidity levels in Long Riston, 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 Long Riston 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 Long Riston

In Long Riston 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 Long Riston.

Maximum UV Index Levels in Long Riston for September

The chart shows the monthly maximum UV Index (UVI) for Long Riston 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 Long Riston typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875321
Data source: Long Riston 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 Long Riston Compares to Other Months

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

This table compares monthly weather conditions in Long Riston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)48 mm (1.9 inches)90%low
February Weather6°C (43°F)64 mm (2.5 inches)88%low
March Weather7°C (45°F)63 mm (2.5 inches)86%moderate
April Weather8°C (47°F)32 mm (1.3 inches)84%moderate
May Weather12°C (53°F)65 mm (2.6 inches)80%high
June Weather15°C (59°F)81 mm (3.2 inches)81%very high
July Weather17°C (62°F)73 mm (2.9 inches)76%very high
August Weather17°C (62°F)85 mm (3.3 inches)77%high
September Weather14°C (58°F)66 mm (2.6 inches)85%moderate
October Weather11°C (53°F)86 mm (3.4 inches)90%moderate
November Weather8°C (47°F)70 mm (2.8 inches)92%low
December Weather6°C (43°F)76 mm (3.0 inches)90%low

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