July Weather in Belfast, United States

Last updated: June 24, 2025

In July, the average temperature in Belfast, United States hovers around 20°C (68°F), offering a pleasant climate for outdoor activities. Expect temperatures to range from a minimum of 10°C (50°F) to a maximum of 32°C (90°F), delivering a nice variety for different preferences. However, don't forget your umbrella, as the region sees an average precipitation of 91 mm (3.6 in) over approximately 11 days. With an average humidity of 74%, the air can feel a bit muggy, adding to the region's unique charm.

July Temperature in Belfast

In July in Belfast, the average temperature is 20°C (68°F). Maximum temperatures can reach 32°C (90°F), while minimum temperatures can drop to as low as 10°C (50°F). This makes it an ideal time for travelers to enjoy a pleasant climate for outdoor activities and sightseeing.

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

The chart illustrates July 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, July typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (90°F) and lows dropping to around 10°C (50°F).

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

July Precipitation in Belfast

In Belfast in July, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

July Precipitation Trends in Belfast

The chart displays monthly precipitation patterns in Belfast, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Belfast, July typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Belfast

In Belfast in July humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

July Average Humidity in Belfast

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

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

July UV Index in Belfast

In Belfast in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Belfast.

Maximum UV Index Levels in Belfast for July

The chart shows the monthly maximum UV Index (UVI) for Belfast in July, 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 July, the maximum UV index in Belfast typically reaches 9, which falls under the very high exposure category.

Data source: Belfast July 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 July 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 July’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 July’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