May weather forecast
Manhattan, FL

May, the last month of the spring in Manhattan, is a tropical month, with an average temperature varying between 70.3°F (21.3°C) and 86.4°F (30.2°C).

Temperature

Manhattan experiences a transition to a tropical 86.4°F (30.2°C) in average high-temperatures with the arrival of May, not greatly differing from April's 82°F (27.8°C). During the month of May, Manhattan experiences a steady low-temperature average of 70.3°F (21.3°C).

Heat index

Throughout May, the heat index is evaluated at a torrid 96.8°F (36°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. 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 highly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

March through May, with an average relative humidity of 71%, are the least humid months in Manhattan.

Rainfall

In Manhattan, during May, the rain falls for 14.6 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Manhattan, during the entire year, the rain falls for 159.5 days and collects up to 15.16" (385mm) of precipitation.

Daylight

In Manhattan, the average length of the day in May is 13h and 31min.
On the first day of May in Manhattan, sunrise is at 6:49 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:20 pm EDT.

Sunshine

May has the most sunshine of the year, with an average of 11.1h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Manhattan. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during May translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Boost your sun resistance with garments that are densely woven yet spacious.