August Weather in Castletown, United Kingdom

Last updated: August 27, 2025

In August, the average temperature in Castletown, United Kingdom is a mild 14°C (58°F). However, you can expect temperatures to vary, with a minimum of 7°C (45°F) and a maximum of 22°C (72°F). Be prepared for some rain, as 79 mm (3.1 in) of precipitation is likely over 18 days. Plus, with an average humidity of 86%, it feels quite humid during this time.

August Temperature in Castletown

In August in Castletown, the average temperature is 14°C (58°F). The maximum can reach 22°C (72°F), while the minimum can drop to as low as 7°C (45°F). This mild weather makes it an ideal time to explore and enjoy outdoor activities in Castletown.

August Weather in Castletown: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castletown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castletown, August typically has an average temperature of 14°C (58°F), with highs reaching up to 22°C (72°F) and lows dropping to around 7°C (45°F).

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

August Precipitation in Castletown

In Castletown in August, the precipitation amount is 79 mm (3.1 in) spread over 18 days.

August Precipitation Trends in Castletown

The chart displays monthly precipitation patterns in Castletown, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Castletown, August typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 18 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Castletown

In Castletown in August, humidity is 86%. With an average temperature of 14°C (58°F), this humidity feels like traveling in a warm, sticky embrace that can make outdoor adventures a bit heavy and sweat-inducing, so it's wise to stay hydrated and take frequent breaks in the shade.

August Average Humidity in Castletown

This chart illustrates the average monthly humidity levels in Castletown, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Castletown is approximately 86%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Castletown

In Castletown in August, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Castletown, you can refer to this Hourly UV Index in Castletown.

Maximum UV Index Levels in Castletown for August

The chart shows the monthly maximum UV Index (UVI) for Castletown in August, 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 August, the maximum UV index in Castletown typically reaches 6, which falls under the high exposure category.

Data source: Castletown August 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 August Weather in Castletown Compares to Other Months

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

This table compares monthly weather conditions in Castletown, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	57 mm (2.2 inches)	82%	low
February Weather	5°C (42°F)	62 mm (2.5 inches)	81%	low
March Weather	6°C (43°F)	72 mm (2.8 inches)	81%	moderate
April Weather	7°C (45°F)	55 mm (2.2 inches)	81%	moderate
May Weather	10°C (50°F)	67 mm (2.6 inches)	83%	moderate
June Weather	13°C (55°F)	70 mm (2.8 inches)	84%	high
July Weather	14°C (58°F)	74 mm (2.9 inches)	87%	high
August Weather	14°C (58°F)	79 mm (3.1 inches)	86%	high
September Weather	13°C (55°F)	109 mm (4.3 inches)	88%	moderate
October Weather	10°C (51°F)	112 mm (4.4 inches)	87%	moderate
November Weather	8°C (46°F)	92 mm (3.6 inches)	87%	low
December Weather	6°C (43°F)	71 mm (2.8 inches)	80%	low