August weather forecast
St. Augustine, FL

August maintains the summer spirit in St. Augustine, albeit with a slightly pronounced tropical feel. The city remains basked in sunshine, interspersed with welcome breaks in the form of showers. The city witnesses the highest average rainfall during this month, summing up to 6.5" (165mm) spread across 15 days. The sea temperature also reaches its peak, making it ideal for water-based activities. Therefore, the month of August unveils a tropical splendor imbued with St. Augustine's characteristic sunny outlook.

Temperature

The commencement of August in St. Augustine, Florida, introduces an average high-temperature of a still tropical 89.1°F (31.7°C), closely mirroring the preceding month. An average low-temperature of 73°F (22.8°C) is noted during the nights in August in St. Augustine.

Rainfall

In August, in St. Augustine, the rain falls for 15 days. Throughout August, 6.5" (165mm) of precipitation is accumulated. Throughout the year, in St. Augustine, there are 116 rainfall days, and 50" (1270mm) of precipitation is accumulated.

Ocean temperature

With an average ocean temperature of 83.8°F (28.8°C), August is the month with the warmest seawater in St. Augustine.
Note: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

In St. Augustine, the average length of the day in August is 13h and 11min.
On the first day of the month, sunrise is at 6:44 am and sunset at 8:18 pm. On the last day of August, in St. Augustine, sunrise is at 7:02 am and sunset at 7:48 pm EDT.

Sunshine

The months with the most sunshine in St. Augustine are March through August, with an average of 9h of sunshine.

UV index

In August, the average daily maximum UV index in St. Augustine is 10. A UV Index reading of 8 to 10 represents a very high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In August, an average UV index of 10 transforms into the following instructions:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise. Be wary! Reflections from sand and water make UV radiation more intense.