September Weather in Scalloway, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Scalloway, United Kingdom hovers around 12°C (54°F). Expect a minimum of 8°C (46°F) and a maximum of 15°C (59°F) during this month. Additionally, prepare for 115 mm (4.5 in) of precipitation spread over 18 days. With an average humidity of 87%, be ready for a damp and cozy atmosphere!

September Temperature in Scalloway

In September in Scalloway, the average temperature is 12°C (54°F). The maximum can reach 15°C (59°F), and the minimum can be as low as 8°C (46°F). This mild weather makes it a great time for travelers to explore Scalloway comfortably.

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

The chart illustrates September temperature patterns in Scalloway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Scalloway, September typically has an average temperature of 12°C (54°F), with highs reaching up to 15°C (59°F) and lows dropping to around 8°C (46°F).

Data source: Temperature data for Scalloway generated using information from the Copernicus Climate Change Service.

September Precipitation in Scalloway

In Scalloway in September, the precipitation amount is 115 mm (4.5 in) occurring over 18 days.

September Precipitation Trends in Scalloway

The chart displays monthly precipitation patterns in Scalloway, 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 Scalloway, September typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Scalloway

In Scalloway in September humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

September Average Humidity in Scalloway

This chart illustrates the average monthly humidity levels in Scalloway, 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 Scalloway is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Scalloway

In Scalloway in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Scalloway for better planning.

Maximum UV Index Levels in Scalloway for September

The chart shows the monthly maximum UV Index (UVI) for Scalloway 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 Scalloway typically reaches 4, which falls under the moderate exposure category.

Data source: Scalloway 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 Scalloway Compares to Other Months

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

This table compares monthly weather conditions in Scalloway, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	96 mm (3.8 inches)	79%	low
February Weather	6°C (43°F)	97 mm (3.8 inches)	79%	low
March Weather	6°C (43°F)	103 mm (4.1 inches)	81%	low
April Weather	6°C (44°F)	51 mm (2.0 inches)	82%	moderate
May Weather	8°C (47°F)	47 mm (1.8 inches)	84%	moderate
June Weather	10°C (51°F)	53 mm (2.1 inches)	84%	high
July Weather	12°C (54°F)	69 mm (2.7 inches)	89%	high
August Weather	13°C (55°F)	74 mm (2.9 inches)	87%	moderate
September Weather	12°C (54°F)	115 mm (4.5 inches)	87%	moderate
October Weather	10°C (51°F)	146 mm (5.8 inches)	87%	low
November Weather	8°C (47°F)	133 mm (5.2 inches)	85%	low
December Weather	7°C (45°F)	137 mm (5.4 inches)	78%	low