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's weather records an average high-temperature of a still moderately hot 82°F (27.8°C), showing little deviation from April. Throughout May, Miami's nights experience a slight temperature dip to a still warm 77°F (25°C).

Heat index

May's heat index is computed to be a tropical 87.8°F (31°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

The average relative humidity in May is 72%.

Rainfall

In Miami, in May, it is raining for 15.3 days, with typically 1.77" (45mm) of accumulated precipitation. In Miami, 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: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In May, the average length of the day is 13h and 25min.
On the first day of May, sunrise is at 6:43 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:07 pm EDT.

Sunshine

In Miami, the average sunshine in May is 10.7h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 7 in May translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.