August Weather in Belfast, South Africa

Last updated: August 31, 2025

In Belfast, South Africa, the average temperature in August hovers around 13°C (55°F). Expect a minimum chill of -2°C (29°F) and a maximum warmth of 26°C (79°F). With just 3 mm (0.1 in) of precipitation over 0 days, the weather remains dry, and the average humidity is a comfortable 61%. Whether you're exploring or relaxing, it's a pleasant time to enjoy all that this destination has to offer!

August Temperature in Belfast

In August in Belfast, the average temperature is 13°C (55°F). The maximum can reach 26°C (79°F), while the minimum can be as low as -2°C (29°F). Travelers should prepare for a range of weather conditions and pack accordingly.

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

The chart illustrates August 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, August typically has an average temperature of 13°C (55°F), with highs reaching up to 26°C (79°F) and lows dropping to around -2°C (29°F).

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

August Precipitation in Belfast

In Belfast in August, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

August Precipitation Trends in Belfast

The chart displays monthly precipitation patterns in Belfast, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Belfast, August typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Belfast

In Belfast in August, humidity is 61%. With an average temperature of 13°C (55°F), this humidity feels like a crisp, invigorating embrace that can make traveling quite refreshing, but it may also feel a bit chilly, especially during the evenings, so layering your clothing is advisable to stay comfortable while exploring.

August Average Humidity in Belfast

This chart illustrates the average monthly humidity levels in Belfast, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Belfast is approximately 61%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Belfast

In Belfast in August, 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 August

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

Data source: Belfast August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	120 mm (4.7 inches)	70%	extreme
February Weather	18°C (65°F)	132 mm (5.2 inches)	65%	extreme
March Weather	17°C (63°F)	60 mm (2.3 inches)	64%	extreme
April Weather	15°C (59°F)	59 mm (2.3 inches)	63%	very high
May Weather	12°C (54°F)	20 mm (0.8 inches)	64%	very high
June Weather	9°C (49°F)	5 mm (0.2 inches)	61%	high
July Weather	9°C (49°F)	1 mm (0.1 inches)	64%	high
August Weather	13°C (55°F)	3 mm (0.1 inches)	61%	very high
September Weather	16°C (60°F)	15 mm (0.6 inches)	65%	extreme
October Weather	16°C (62°F)	65 mm (2.6 inches)	61%	extreme
November Weather	18°C (64°F)	92 mm (3.6 inches)	68%	extreme
December Weather	18°C (65°F)	158 mm (6.2 inches)	72%	extreme