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September Weather in Gourock, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Gourock, United Kingdom hovers around 12°C (54°F), with a minimum dipping as low as -3°C (27°F) and a maximum reaching up to 25°C (77°F). Expect approximately 135 mm (5.3 in) of precipitation spread over 17 days, contributing to an average humidity level of 88%.

September Temperature in Gourock

In September in Gourock, the average temperature is 12°C (54°F). The maximum can reach 25°C (77°F) and the minimum can be as low as -3°C (27°F). This variation makes it essential for travelers to pack layers to comfortably enjoy both warm days and chilly evenings.

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

The chart illustrates September temperature patterns in Gourock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gourock, September typically has an average temperature of 12°C (54°F), with highs reaching up to 25°C (77°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec394042455156595854494440
Data source: Temperature data for Gourock 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 Gourock

In Gourock in September, the precipitation amount is 135 mm (5.3 in) spread over 17 days.

September Precipitation Trends in Gourock

The chart displays monthly precipitation patterns in Gourock, 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 Gourock, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec1171951526387142124183135202161161
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gourock

In Gourock in September, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

September Average Humidity in Gourock

This chart illustrates the average monthly humidity levels in Gourock, 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 Gourock is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gourock

In Gourock 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 Gourock.

Maximum UV Index Levels in Gourock for September

The chart shows the monthly maximum UV Index (UVI) for Gourock 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 Gourock typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Gourock 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 Gourock Compares to Other Months

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

This table compares monthly weather conditions in Gourock, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)117 mm (4.6 inches)90%low
February Weather5°C (40°F)195 mm (7.7 inches)88%low
March Weather6°C (42°F)152 mm (6.0 inches)86%moderate
April Weather7°C (46°F)63 mm (2.5 inches)85%moderate
May Weather10°C (51°F)87 mm (3.4 inches)80%high
June Weather13°C (56°F)142 mm (5.6 inches)83%very high
July Weather15°C (59°F)123 mm (4.9 inches)82%very high
August Weather14°C (58°F)183 mm (7.2 inches)82%high
September Weather12°C (54°F)135 mm (5.3 inches)88%moderate
October Weather9°C (49°F)202 mm (7.9 inches)90%moderate
November Weather6°C (44°F)161 mm (6.3 inches)92%low
December Weather5°C (41°F)161 mm (6.3 inches)89%low

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