October Weather in Castletown, United Kingdom

Last updated: August 27, 2025

In October, the average temperature in Castletown, United Kingdom hovers around 10°C (51°F). Expect minimums dipping to 1°C (34°F), while maximums can reach up to 18°C (65°F). With 112 mm (4.4 in) of precipitation over approximately 20 days, it's wise to be prepared for rain. Additionally, the average humidity is a high 87%, ensuring a humid feel throughout the month.

October Temperature in Castletown

In October in Castletown, the average temperature is 10°C (51°F). Maximums can reach 18°C (65°F), while minimums can dip as low as 1°C (34°F). Be prepared for mild days and chilly nights, perfect for layering and enjoying outdoor adventures.

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

The chart illustrates October 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, October typically has an average temperature of 10°C (51°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).

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

October Precipitation in Castletown

In Castletown in October, the precipitation amount is 112 mm (4.4 in) over a span of 20 days.

October Precipitation Trends in Castletown

The chart displays monthly precipitation patterns in Castletown, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Castletown, October typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 20 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Castletown

In Castletown in October humidity is 87%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and sticky, and often requiring frequent breaks to stay hydrated and cool.

October Average Humidity in Castletown

This chart illustrates the average monthly humidity levels in Castletown, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Castletown is approximately 87%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Castletown

In Castletown in October, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Castletown, you can check the information here.

Maximum UV Index Levels in Castletown for October

The chart shows the monthly maximum UV Index (UVI) for Castletown in October, 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 October, the maximum UV index in Castletown typically reaches 3, which falls under the moderate exposure category.

Data source: Castletown October 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 October 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 October’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 October’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