August Weather in Saint Johns, United States

Last updated: June 24, 2025

In Saint Johns, United States, the average temperature in August is a pleasant 24°C (76°F). Expect lows of 10°C (51°F) and highs reaching up to 36°C (97°F). During this month, you can anticipate about 19 mm (0.8 in) of precipitation spread over 5 days, with an average humidity of 46%. Enjoy the warmth while staying prepared for the occasional rain!

August Temperature in Saint Johns

In August in Saint Johns, the average temperature is 24°C (76°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 10°C (51°F). This diverse temperature range makes it an ideal destination for travelers seeking both warm days and cool evenings.

August Weather in Saint Johns: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Saint Johns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Johns, August typically has an average temperature of 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (51°F).

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

August Precipitation in Saint Johns

In Saint Johns in August, the total precipitation amount is 19 mm (0.8 in), occurring over the course of 5 days.

August Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, 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 Saint Johns, August typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 5 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 Saint Johns

In Saint Johns in August humidity is 46%. With an average temperature of 24°C (76°F), this humidity feels like a warm embrace, making it quite pleasant for exploring the surroundings and enjoying outdoor activities without feeling overly sticky or uncomfortable.

August Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, 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 Saint Johns is approximately 46%, 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 Saint Johns

In Saint Johns in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Saint Johns.

Maximum UV Index Levels in Saint Johns for August

The chart shows the monthly maximum UV Index (UVI) for Saint Johns 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 Saint Johns typically reaches 12, which falls under the extreme exposure category.

Data source: Saint Johns 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 Saint Johns Compares to Other Months

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

This table compares monthly weather conditions in Saint Johns, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	25 mm (1.0 inches)	81%	moderate
February Weather	4°C (40°F)	29 mm (1.1 inches)	83%	high
March Weather	9°C (48°F)	21 mm (0.8 inches)	71%	very high
April Weather	14°C (57°F)	13 mm (0.5 inches)	61%	extreme
May Weather	18°C (64°F)	9 mm (0.4 inches)	48%	extreme
June Weather	24°C (76°F)	6 mm (0.3 inches)	36%	extreme
July Weather	25°C (77°F)	32 mm (1.3 inches)	37%	extreme
August Weather	24°C (76°F)	19 mm (0.8 inches)	46%	extreme
September Weather	21°C (69°F)	19 mm (0.8 inches)	62%	extreme
October Weather	14°C (57°F)	17 mm (0.7 inches)	74%	very high
November Weather	8°C (47°F)	12 mm (0.5 inches)	82%	high
December Weather	3°C (37°F)	19 mm (0.8 inches)	82%	moderate