August Weather in Jamestown, United States

Last updated: June 24, 2025

In August in Jamestown, United States, the average temperature hovers around 25°C (78°F). Expect a range, with minimums dropping to 13°C (56°F) and maximums soaring up to 36°C (96°F). Prepare for 127 mm (5.0 in) of precipitation spread over 15 days, accompanied by an average humidity of 74%.

August Temperature in Jamestown

In August in Jamestown, the average temperature is 25°C (78°F). Maximums can reach 36°C (96°F), and minimums can be as low as 13°C (56°F). It’s a great time for travelers to enjoy a mix of warm days and cooler evenings while exploring all that Jamestown has to offer.

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

The chart illustrates August temperature patterns in Jamestown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jamestown, August typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (96°F) and lows dropping to around 13°C (56°F).

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

August Precipitation in Jamestown

In Jamestown in August, the total precipitation amount is 127 mm (5.0 in) distributed over 15 days.

August Precipitation Trends in Jamestown

The chart displays monthly precipitation patterns in Jamestown, 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 Jamestown, August typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 15 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 Jamestown

In Jamestown in August humidity is 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

August Average Humidity in Jamestown

This chart illustrates the average monthly humidity levels in Jamestown, 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 Jamestown is approximately 74%, 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 Jamestown

In Jamestown in August, 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 Jamestown.

Maximum UV Index Levels in Jamestown for August

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

Data source: Jamestown 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 Jamestown Compares to Other Months

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

This table compares monthly weather conditions in Jamestown, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	88 mm (3.5 inches)	86%	moderate
February Weather	8°C (47°F)	121 mm (4.8 inches)	85%	high
March Weather	11°C (52°F)	87 mm (3.4 inches)	84%	very high
April Weather	16°C (60°F)	109 mm (4.3 inches)	82%	very high
May Weather	21°C (69°F)	120 mm (4.7 inches)	83%	very high
June Weather	24°C (76°F)	106 mm (4.2 inches)	82%	extreme
July Weather	27°C (80°F)	97 mm (3.8 inches)	80%	very high
August Weather	25°C (78°F)	127 mm (5.0 inches)	74%	very high
September Weather	23°C (73°F)	137 mm (5.4 inches)	75%	very high
October Weather	17°C (64°F)	104 mm (4.1 inches)	79%	very high
November Weather	9°C (49°F)	82 mm (3.2 inches)	87%	moderate
December Weather	7°C (45°F)	109 mm (4.3 inches)	87%	moderate