May weather forecast
Saint Petersburg, FL

May marks the advent of summer in Saint Petersburg, Florida, underlined by intensified heat and an elongation in daylight duration. Drawing a comparison with April, May's climate is demonstrably warmer, while a rise in relative humidity makes its presence felt. Dovetailing with the increased warmth, the sea temperature escalates further, signaling the best times for marine activities. A distinct feature of May is an impressive 2.09in of rainfall, the highest thus far in the year. In addition, an intensification in UV index to seven adds an essential summer characteristic to this month.

Temperature

As Saint Petersburg welcomes May, the average high-temperature is noted at a still moderately hot 84°F (28.9°C), closely aligning with the preceding month. The nights of May anticipate an average low-temperature of 72.7°F (22.6°C).

Heat index

The heat index in May is evaluated at a hot 91.4°F (33°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

With an average relative humidity of 71%, May is the least humid month in Saint Petersburg.

Rainfall

In May, in Saint Petersburg, Florida, the rain falls for 14.5 days. Throughout May, 2.09" (53mm) of precipitation is accumulated. In Saint Petersburg, during the entire year, the rain falls for 172.1 days and collects up to 27.2" (691mm) of precipitation.

Ocean temperature

In May, the average ocean temperature in Saint Petersburg is 78.1°F (25.6°C).
Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

In May, the average length of the day in Saint Petersburg is 13h and 32min.
On the first day of May in Saint Petersburg, Florida, sunrise is at 6:50 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:21 pm EDT.

Sunshine

The month with the most sunshine is May, with an average of 11.2h of sunshine.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In May, the maximum UV index of 7 suggests this advice:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! The reflection of water and sand increases the UV radiation significantly.