May weather forecast
O'Brien, FL

The last month of the spring, May, is a hot month in O'Brien, Florida, with an average temperature varying between 86.4°F (30.2°C) and 65.8°F (18.8°C).

Temperature

O'Brien's weather in May presents a minor rise in the average high-temperature, moving from a moderately hot 80.2°F (26.8°C) in April to a tropical 86.4°F (30.2°C). Throughout May, O'Brien records an average temperature of 65.8°F (18.8°C) at night.

Heat index

In May, the average heat index is estimated at a sweltering 96.8°F (36°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The least humid month is May, with an average relative humidity of 70%.

Rainfall

In O'Brien, in May, it is raining for 13.6 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 173.7 rainfall days, and 30.83" (783mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall in O'Brien.

Daylight

In O'Brien, the average length of the day in May is 13h and 41min.
On the first day of May, sunrise is at 6:48 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 8:28 pm EDT.

Sunshine

In O'Brien, the average sunshine in May is 10.8h.

UV index

The months with the highest UV index in O'Brien are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.