August weather forecast
Saint Petersburg, FL

August sees the continuation of the summer atmosphere in Saint Petersburg, Florida but hints at a forthcoming change. Similar to July, high temperatures dominate, along with copious daylight hours, upholding the established summer motif. A drop in sea temperature against the peak in July acts as a signal of the season slowly changing. Despite the highest heat, the rainfall descends to 4.76in, indicating a gradual shift in climatic conditions. Coupled with the slightly lowered rainfall, clouds maintain consistent cover, shaping a dynamic sky most days.

Temperature

August brings the highest temperatures in Saint Petersburg, with an average high of 88.7°F (31.5°C) and an average low of 79.5°F (26.4°C).

Heat index

During August, the heat index is evaluated at a blisteringly hot 104°F (40°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
One should consider that heat index numbers are for shaded settings and light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In August, the average relative humidity is 73%.

Rainfall

In Saint Petersburg, Florida, during August, the rain falls for 25.6 days and regularly aggregates up to 4.76" (121mm) of precipitation. Throughout the year, in Saint Petersburg, there are 172.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Ocean temperature

With an average ocean temperature of 86.7°F (30.4°C), August is the month with the warmest seawater in Saint Petersburg.
Note: Many feel that waters warmer than 86°F (30°C) fail to offer the same rejuvenating touch.

Daylight

In August, the average length of the day is 13h and 6min.
On the first day of August in Saint Petersburg, sunrise is at 6:53 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 7:52 pm EDT.

Sunshine

The average sunshine in August is 9.7h.

UV index

The months with the highest UV index in Saint Petersburg are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 during August translates into the following directions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Watch out! Sand and water enhance the UV exposure you receive.