March Weather in Belfast, United States

Last updated: June 24, 2025

In March, the average temperature in Belfast, United States hovers around 0°C (32°F). Expect a chilly experience with minimums plummeting to -18°C (-1°F) and maximums reaching a mild 15°C (59°F). During this month, you'll encounter 72 mm (2.9 in) of precipitation over approximately 9 days, accompanied by an average humidity level of 85%.

March Temperature in Belfast

In March in Belfast, the average temperature is 0°C (32°F). Maximums can reach 15°C (59°F) and minimums can be as low as -18°C (-1°F). Be prepared for a wide range of temperatures if you plan to visit during this time.

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

The chart illustrates March temperature patterns in Belfast, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belfast, March typically has an average temperature of 0°C (32°F), with highs reaching up to 15°C (59°F) and lows dropping to around -18°C (-1°F).

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

March Precipitation in Belfast

In Belfast in March, the total precipitation amount is 72 mm (2.9 in), occurring over the course of 9 days.

March Precipitation Trends in Belfast

The chart displays monthly precipitation patterns in Belfast, 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 Belfast, March typically receives around 72 mm (2.9 inches) of precipitation spread over approximately 9 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 Belfast

In Belfast in March, humidity is 85%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that clings to your clothes, making every step feel more arduous and the air heavy, which can dampen the enthusiasm for exploring the surroundings.

March Average Humidity in Belfast

This chart illustrates the average monthly humidity levels in Belfast, 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 Belfast is approximately 85%, 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 Belfast

In Belfast in March, 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 Belfast.

Maximum UV Index Levels in Belfast for March

The chart shows the monthly maximum UV Index (UVI) for Belfast 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 Belfast typically reaches 5, which falls under the moderate exposure category.

Data source: Belfast 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 Belfast Compares to Other Months

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

This table compares monthly weather conditions in Belfast, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	93 mm (3.7 inches)	88%	low
February Weather	-4°C (26°F)	88 mm (3.5 inches)	88%	moderate
March Weather	0°C (32°F)	72 mm (2.9 inches)	85%	moderate
April Weather	6°C (43°F)	131 mm (5.2 inches)	81%	high
May Weather	11°C (53°F)	90 mm (3.6 inches)	76%	very high
June Weather	17°C (63°F)	76 mm (3.0 inches)	74%	very high
July Weather	20°C (68°F)	91 mm (3.6 inches)	74%	very high
August Weather	20°C (68°F)	75 mm (3.0 inches)	74%	very high
September Weather	16°C (61°F)	77 mm (3.0 inches)	77%	high
October Weather	11°C (51°F)	130 mm (5.1 inches)	82%	moderate
November Weather	3°C (38°F)	121 mm (4.8 inches)	85%	moderate
December Weather	-2°C (28°F)	129 mm (5.1 inches)	84%	low