August weather forecast
St. Augustine, FL

The last month of the summer, August, is another hot month in St. Augustine, with an average temperature varying between 89.1°F (31.7°C) and 73°F (22.8°C).

Temperature

In August, the average high-temperature in St. Augustine, Florida, is practically the same as in July - a still hot 89.1°F (31.7°C). In St. Augustine, the average low-temperature is 73°F (22.8°C).

Rainfall

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

Ocean temperature

The month with the warmest seawater in St. Augustine is August, with an average ocean temperature of 83.8°F (28.8°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In St. Augustine, Florida, the average length of the day in August is 13h and 11min.
On the first day of August in St. Augustine, Florida, sunrise is at 6:44 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 7:49 pm EDT.

Sunshine

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

UV index

In St. Augustine, Florida, the average daily maximum UV index in August is 10. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 10 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.