August Weather in Harlem, United States

Last updated: June 24, 2025

In August, the average temperature in Harlem, United States is a pleasant 21°C (69°F). However, be prepared for a wide range of temperatures, as it can dip to a chilly 5°C (41°F) or soar to a sizzling 40°C (104°F). Expect 28 mm (1.1 in) of precipitation over the course of 4 days, with an average humidity of 71%, creating a warm and slightly humid atmosphere.

August Temperature in Harlem

In August in Harlem, the average temperature is 21°C (69°F). Maximums can reach 40°C (104°F) and minimums can drop as low as 5°C (41°F). Be prepared for a wide range of temperatures, making it essential to pack both light clothing and warmer layers for your travels.

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

The chart illustrates August temperature patterns in Harlem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harlem, August typically has an average temperature of 21°C (69°F), with highs reaching up to 40°C (104°F) and lows dropping to around 5°C (41°F).

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

August Precipitation in Harlem

In Harlem in August, the precipitation amount is 28 mm (1.1 in) over the course of 4 days.

August Precipitation Trends in Harlem

The chart displays monthly precipitation patterns in Harlem, 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 Harlem, August typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 4 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 Harlem

In Harlem in August, humidity is 71%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, wrapping around you as you explore the sights, making it essential to stay hydrated and take breaks in shaded areas.

August Average Humidity in Harlem

This chart illustrates the average monthly humidity levels in Harlem, 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 Harlem is approximately 71%, 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 Harlem

In Harlem 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 Harlem.

Maximum UV Index Levels in Harlem for August

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

Data source: Harlem 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 Harlem Compares to Other Months

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

This table compares monthly weather conditions in Harlem, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	11 mm (0.4 inches)	85%	low
February Weather	-9°C (16°F)	26 mm (1.0 inches)	90%	moderate
March Weather	-1°C (31°F)	22 mm (0.9 inches)	82%	moderate
April Weather	5°C (41°F)	26 mm (1.0 inches)	73%	high
May Weather	12°C (55°F)	38 mm (1.5 inches)	73%	very high
June Weather	18°C (65°F)	49 mm (1.9 inches)	72%	very high
July Weather	22°C (73°F)	10 mm (0.4 inches)	74%	very high
August Weather	21°C (69°F)	28 mm (1.1 inches)	71%	very high
September Weather	15°C (59°F)	43 mm (1.7 inches)	65%	high
October Weather	6°C (44°F)	24 mm (0.9 inches)	68%	moderate
November Weather	0°C (33°F)	28 mm (1.1 inches)	81%	moderate
December Weather	-4°C (25°F)	19 mm (0.8 inches)	89%	low