March Weather in Castletown, United Kingdom

Last updated: August 27, 2025

In Castletown, United Kingdom, the average temperature in March is a brisk 6°C (43°F). Visitors can expect a range from a chilly -4°C (25°F) at night to a pleasant maximum of 17°C (63°F) during the day. With an average humidity of 81%, it's a moist environment, and be prepared for 72 mm (2.8 in) of precipitation spread over 18 days throughout the month.

March Temperature in Castletown

In March in Castletown, the average temperature is 6°C (43°F). The maximum can reach 17°C (63°F), and the minimum can be as low as -4°C (25°F). It's advisable to pack layers to ensure comfort during your travels, as temperatures can vary significantly throughout the day.

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

The chart illustrates March 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, March typically has an average temperature of 6°C (43°F), with highs reaching up to 17°C (63°F) and lows dropping to around -4°C (25°F).

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

March Precipitation in Castletown

In Castletown in March, the precipitation amount is 72 mm (2.8 in) spread across 18 days.

March Precipitation Trends in Castletown

The chart displays monthly precipitation patterns in Castletown, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Castletown, March typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Castletown

In Castletown in March, humidity is 81%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill enveloping you, making every step outside seem heavier and less inviting for traveling.

March Average Humidity in Castletown

This chart illustrates the average monthly humidity levels in Castletown, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Castletown is approximately 81%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Castletown

In Castletown in March, 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 March

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

Data source: Castletown March 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 March 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 March’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 March’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