August Weather in Derry, United States

Last updated: June 24, 2025

In August, the average temperature in Derry, United States is a pleasant 22°C (71°F). Expect a range with minimums dipping to 10°C (50°F) and maximums soaring up to 33°C (92°F). You'll likely encounter 92 mm (3.6 in) of precipitation across 14 days, coupled with an average humidity of 64%.

August Temperature in Derry

In August in Derry, the average temperature is 22°C (71°F). Maximums can reach 33°C (92°F), while minimums can drop as low as 10°C (50°F). It's a great time for travelers to enjoy mild weather while exploring the sights.

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

The chart illustrates August temperature patterns in Derry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Derry, August typically has an average temperature of 22°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 10°C (50°F).

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

August Precipitation in Derry

In Derry in August, the precipitation amount is 92 mm (3.6 in) over the course of 14 days.

August Precipitation Trends in Derry

The chart displays monthly precipitation patterns in Derry, 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 Derry, August typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 14 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 Derry

In Derry in August humidity is 64%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket, making it a comfortable time for exploring the local sights, although staying hydrated and taking breaks in the shade is advisable for a pleasant travel experience.

August Average Humidity in Derry

This chart illustrates the average monthly humidity levels in Derry, 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 Derry is approximately 64%, 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 Derry

In Derry 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 Derry.

Maximum UV Index Levels in Derry for August

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

Data source: Derry 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 Derry Compares to Other Months

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

This table compares monthly weather conditions in Derry, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	96 mm (3.8 inches)	89%	moderate
February Weather	1°C (34°F)	135 mm (5.3 inches)	90%	moderate
March Weather	4°C (40°F)	117 mm (4.6 inches)	89%	high
April Weather	10°C (50°F)	137 mm (5.4 inches)	88%	very high
May Weather	16°C (61°F)	158 mm (6.2 inches)	80%	very high
June Weather	20°C (68°F)	154 mm (6.1 inches)	79%	very high
July Weather	23°C (73°F)	121 mm (4.8 inches)	74%	very high
August Weather	22°C (71°F)	92 mm (3.6 inches)	64%	very high
September Weather	19°C (66°F)	123 mm (4.8 inches)	67%	very high
October Weather	13°C (56°F)	116 mm (4.6 inches)	81%	high
November Weather	5°C (41°F)	96 mm (3.8 inches)	89%	moderate
December Weather	1°C (35°F)	118 mm (4.6 inches)	88%	low