August Weather in Onset, United States

Last updated: June 24, 2025

In Onset, United States, the average temperature in August is a comfortable 23°C (74°F). Expect a range that dips to a cool 13°C (55°F) at night and can soar to a warm 34°C (94°F) during the day. The region experiences 81 mm (3.2 in) of precipitation spread over 11 days, contributing to an average humidity of 76%. Whether you're basking in the sun or finding shelter from a light drizzle, August showcases the diverse climate of this vibrant destination!

August Temperature in Onset

In August in Onset, the average temperature is 23°C (74°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 13°C (55°F). This pleasant range makes it an ideal time for outdoor activities and sightseeing.

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

The chart illustrates August temperature patterns in Onset, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onset, August typically has an average temperature of 23°C (74°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (55°F).

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

August Precipitation in Onset

In Onset in August, the precipitation amount is 81 mm (3.2 in) over a span of 11 days.

August Precipitation Trends in Onset

The chart displays monthly precipitation patterns in Onset, 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 Onset, August typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Onset

In Onset in August humidity is 76%. With an average temperature of 23°C (74°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor exploration feel a bit sluggish and requiring frequent breaks for hydration and respite from the heat.

August Average Humidity in Onset

This chart illustrates the average monthly humidity levels in Onset, 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 Onset is approximately 76%, 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 Onset

In Onset 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 Onset.

Maximum UV Index Levels in Onset for August

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

Data source: Onset 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 Onset Compares to Other Months

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

This table compares monthly weather conditions in Onset, 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 (34°F)	82 mm (3.2 inches)	84%	moderate
February Weather	2°C (36°F)	97 mm (3.8 inches)	84%	moderate
March Weather	4°C (39°F)	107 mm (4.2 inches)	82%	high
April Weather	9°C (48°F)	122 mm (4.8 inches)	79%	very high
May Weather	14°C (57°F)	98 mm (3.9 inches)	75%	very high
June Weather	19°C (67°F)	90 mm (3.5 inches)	78%	very high
July Weather	23°C (74°F)	102 mm (4.0 inches)	76%	very high
August Weather	23°C (74°F)	81 mm (3.2 inches)	76%	very high
September Weather	19°C (67°F)	102 mm (4.0 inches)	75%	very high
October Weather	14°C (58°F)	143 mm (5.6 inches)	75%	high
November Weather	8°C (46°F)	93 mm (3.7 inches)	80%	moderate
December Weather	3°C (38°F)	116 mm (4.6 inches)	80%	low