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September Weather in Johnshaven, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Johnshaven, United Kingdom hovers around 13°C (56°F). Expect lows of 8°C (47°F) and highs reaching 17°C (63°F). Rainfall is common, with 71 mm (2.8 in) of precipitation spread over 14 days, while the air remains quite moist, showcasing an average humidity of 89%.

September Temperature in Johnshaven

In September in Johnshaven, the average temperature is 13°C (56°F). The maximum can reach 17°C (63°F), and the minimum can be as low as 8°C (47°F). Be prepared for mild weather, making it ideal for exploring and enjoying outdoor activities.

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

The chart illustrates September temperature patterns in Johnshaven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnshaven, September typically has an average temperature of 13°C (56°F), with highs reaching up to 17°C (63°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec424243444853575755524744
Data source: Temperature data for Johnshaven 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 Johnshaven

In Johnshaven in September, the precipitation amount is 71 mm (2.8 in) over a duration of 14 days.

September Precipitation Trends in Johnshaven

The chart displays monthly precipitation patterns in Johnshaven, 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 Johnshaven, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec528972316172807071122115102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Johnshaven

In Johnshaven in September humidity is 89%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making outdoor travel feel heavy and uncomfortable.

September Average Humidity in Johnshaven

This chart illustrates the average monthly humidity levels in Johnshaven, 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 Johnshaven is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%85%83%83%83%85%83%89%89%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Johnshaven

In Johnshaven 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 Johnshaven.

Maximum UV Index Levels in Johnshaven for September

The chart shows the monthly maximum UV Index (UVI) for Johnshaven 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 Johnshaven typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568765311
Data source: Johnshaven 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 Johnshaven Compares to Other Months

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

This table compares monthly weather conditions in Johnshaven, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)51 mm (2.0 inches)88%low
February Weather5°C (42°F)89 mm (3.5 inches)86%low
March Weather6°C (43°F)72 mm (2.8 inches)85%moderate
April Weather7°C (44°F)31 mm (1.2 inches)83%moderate
May Weather9°C (49°F)61 mm (2.4 inches)83%high
June Weather12°C (53°F)72 mm (2.9 inches)83%very high
July Weather14°C (57°F)80 mm (3.1 inches)85%high
August Weather14°C (58°F)70 mm (2.8 inches)83%high
September Weather13°C (56°F)71 mm (2.8 inches)89%moderate
October Weather11°C (52°F)122 mm (4.8 inches)89%moderate
November Weather9°C (48°F)115 mm (4.5 inches)90%low
December Weather7°C (44°F)102 mm (4.0 inches)86%low

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