May weather forecast
Miami, FL

May is the month when Miami, Florida starts experiencing significant indicators of the sizzling summer ahead. The distinct aspect of May is the sharp increase in rainfall to a whopping 1.77 in, signalling the start of the wet season. While being warmer and wetter than April, the fairly high temperatures don't deter outdoor engagements thanks to the cooling sea breezes. Most days receive abundant sunshine, propelling an optimistic and uplifting mood in the city. A strong inclination towards higher temperature marks can be observed as the city advances towards June.

Temperature

May experiences an average high-temperature of a still moderately hot 82°F (27.8°C), barely different from April's 79.3°F (26.3°C). Miami documents a consistent average low-temperature of 77°F (25°C) at night during May.

Heat index

May's mean heat index is computed to be a tropical 87.8°F (31°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In Miami, the average relative humidity in May is 72%.

Rainfall

In Miami, during May, the rain falls for 15.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Miami, Florida, during the entire year, the rain falls for 182.7 days and collects up to 16.38" (416mm) of precipitation.

Ocean temperature

In May, the average ocean temperature is 81.1°F (27.3°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 Miami, the average length of the day in May is 13h and 25min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:52 pm. On the last day of May, sunrise is at 6:29 am and sunset at 8:07 pm EDT.

Sunshine

In May, the average sunshine is 10.7h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index in Miami. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 7 in May transforms into this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! Reflections of sand and water make the Sun's UV rays stronger.