August Weather in Jacksonville, United States

Last updated: June 24, 2025

In Jacksonville, United States, the average temperature for August hovers around 27°C (81°F), creating a pleasantly warm atmosphere. However, be prepared for a range: temperatures can dip to a minimum of 18°C (65°F) and soar to a maximum of 37°C (98°F). With precipitation measuring 111 mm (4.4 in) over 11 days, and an average humidity of 74%, it’s a month best suited for those who enjoy a tropical vibe!

August Temperature in Jacksonville

In August in Jacksonville, the average temperature is 27°C (81°F). Maximums can reach 37°C (98°F) and minimums can be as low as 18°C (65°F). This makes it a great time to explore outdoor activities while being prepared for both warm days and cooler evenings.

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

The chart illustrates August temperature patterns in Jacksonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jacksonville, August typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (98°F) and lows dropping to around 18°C (65°F).

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

August Precipitation in Jacksonville

In Jacksonville in August, the precipitation amount is 111 mm (4.4 in), occurring over the course of 11 days.

August Precipitation Trends in Jacksonville

The chart displays monthly precipitation patterns in Jacksonville, 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 Jacksonville, August typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 11 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 Jacksonville

In Jacksonville in August humidity is 74%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket, making traveling feel both sticky and draining, yet the heat invites you to seek out refreshing dips in pools or shady spots to relax.

August Average Humidity in Jacksonville

This chart illustrates the average monthly humidity levels in Jacksonville, 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 Jacksonville 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 Jacksonville

In Jacksonville 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 Jacksonville.

Maximum UV Index Levels in Jacksonville for August

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

Data source: Jacksonville 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 Jacksonville Compares to Other Months

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

This table compares monthly weather conditions in Jacksonville, 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 (43°F)	92 mm (3.6 inches)	84%	moderate
February Weather	8°C (46°F)	153 mm (6.0 inches)	83%	high
March Weather	13°C (56°F)	159 mm (6.3 inches)	81%	very high
April Weather	16°C (62°F)	166 mm (6.5 inches)	81%	very high
May Weather	22°C (72°F)	165 mm (6.5 inches)	83%	extreme
June Weather	26°C (79°F)	103 mm (4.0 inches)	83%	extreme
July Weather	28°C (82°F)	106 mm (4.2 inches)	81%	extreme
August Weather	27°C (81°F)	111 mm (4.4 inches)	74%	very high
September Weather	25°C (77°F)	94 mm (3.7 inches)	71%	very high
October Weather	18°C (65°F)	108 mm (4.3 inches)	76%	high
November Weather	11°C (52°F)	77 mm (3.0 inches)	84%	moderate
December Weather	9°C (48°F)	151 mm (6.0 inches)	88%	moderate