June Weather in Belfast, United States

Last updated: June 24, 2025

In June, the average temperature in Belfast, United States is a pleasant 17°C (63°F), with minimums dropping to 4°C (39°F) and maximums soaring up to 32°C (90°F). Expect about 76 mm (3.0 in) of rainfall spread over 10 days during the month, contributing to an average humidity level of 74% that adds a bit of stickiness to the warm air.

June Temperature in Belfast

In June in Belfast, the average temperature is 17°C (63°F). Maximum temperatures can reach up to 32°C (90°F), while minimums can drop as low as 4°C (39°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates June 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, June typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 4°C (39°F).

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

June Precipitation in Belfast

In Belfast in June, the total precipitation amount is 76 mm (3.0 in) spread over a period of 10 days.

June Precipitation Trends in Belfast

The chart displays monthly precipitation patterns in Belfast, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Belfast, June typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Belfast

In Belfast in June, humidity is 74%. With an average temperature of 17°C (63°F), this humidity feels like a gentle embrace, making outdoor exploration comfortable yet slightly enveloped in warmth, perfect for leisurely strolls but requiring ample hydration for prolonged activities.

June Average Humidity in Belfast

This chart illustrates the average monthly humidity levels in Belfast, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Belfast is approximately 74%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Belfast

In Belfast in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Belfast.

Maximum UV Index Levels in Belfast for June

The chart shows the monthly maximum UV Index (UVI) for Belfast in June, 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 June, the maximum UV index in Belfast typically reaches 10, which falls under the very high exposure category.

Data source: Belfast June 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 June 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 June’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 June’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