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

Miami marks the start of May with an average high-temperature of a still moderately hot 82°F (27.8°C), hinting at a slight fluctuation from April's 79.3°F (26.3°C). Recording a slight decline in temperature during the nights, Miami's May temperatures average at a still warm 77°F (25°C).

Heat index

Throughout May, the heat index is estimated at a hot 87.8°F (31°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance 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, in May, during 15.3 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. 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: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

In May, the average length of the day 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, in Miami, sunrise is at 6:29 am and sunset at 8:07 pm EDT.

Sunshine

The average sunshine in May is 10.7h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.