May weather forecast
Seffner, FL

May, the last month of the spring in Seffner, is a tropical month, with an average temperature ranging between max 86.5°F (30.3°C) and min 70.2°F (21.2°C).

Temperature

Seffner, Florida, experiences an average high-temperature of a tropical 86.5°F (30.3°C) with the onset of May, subtly varied from April's 82.4°F (28°C). Throughout the month of May, Seffner witnesses an average temperature of 70.2°F (21.2°C).

Heat index

The heat index value during May is appraised at a fiery hot 96.8°F (36°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

March and May, with an average relative humidity of 70%, are the least humid months in Seffner, Florida.

Rainfall

In Seffner, during May, the rain falls for 15.2 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 160.9 rainfall days, and 16.77" (426mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 33min.
On the first day of the month, sunrise is at 6:48 am and sunset at 8:03 pm. On the last day of May, in Seffner, sunrise is at 6:32 am and sunset at 8:20 pm EDT.

Sunshine

May has the most sunshine of the year, with an average of 10.9h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the maximum UV index of 7 transforms into these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.