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September Weather in Rosslea, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Rosslea, United Kingdom is a pleasant 13°C (55°F). However, be prepared for a range, as temperatures can dip to a chilly 1°C (34°F) or rise up to a warm 24°C (76°F). Expect about 74 mm (2.9 in) of precipitation spread over 15 days, and keep in mind the elevated average humidity of 88%.

September Temperature in Rosslea

In September in Rosslea, the average temperature is 13°C (55°F). Maximums can reach 24°C (76°F), while minimums can drop as low as 1°C (34°F). This makes Rosslea a great destination for travelers looking to experience mild weather with a chance of cooler evenings.

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

The chart illustrates September temperature patterns in Rosslea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosslea, September typically has an average temperature of 13°C (55°F), with highs reaching up to 24°C (76°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec424243475257605955504543
Data source: Temperature data for Rosslea 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 Rosslea

In Rosslea in September, the precipitation amount is 74 mm (2.9 in) over the course of 15 days.

September Precipitation Trends in Rosslea

The chart displays monthly precipitation patterns in Rosslea, 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 Rosslea, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec65100885269898412374888994
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rosslea

In Rosslea in September humidity is 88%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while exploring, as the moisture in the air can lead to a rather uncomfortable experience for traveling.

September Average Humidity in Rosslea

This chart illustrates the average monthly humidity levels in Rosslea, 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 Rosslea is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rosslea

In Rosslea 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 Rosslea.

Maximum UV Index Levels in Rosslea for September

The chart shows the monthly maximum UV Index (UVI) for Rosslea 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 Rosslea typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Rosslea 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 Rosslea Compares to Other Months

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

This table compares monthly weather conditions in Rosslea, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)65 mm (2.6 inches)87%low
February Weather6°C (42°F)100 mm (4.0 inches)86%low
March Weather6°C (44°F)88 mm (3.5 inches)86%moderate
April Weather8°C (47°F)52 mm (2.1 inches)85%moderate
May Weather11°C (52°F)69 mm (2.7 inches)82%high
June Weather14°C (57°F)89 mm (3.5 inches)84%very high
July Weather15°C (60°F)84 mm (3.3 inches)86%very high
August Weather15°C (59°F)123 mm (4.9 inches)86%high
September Weather13°C (55°F)74 mm (2.9 inches)88%moderate
October Weather10°C (50°F)88 mm (3.5 inches)89%moderate
November Weather7°C (46°F)89 mm (3.5 inches)90%low
December Weather6°C (43°F)94 mm (3.7 inches)86%low

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