May weather forecast
Naples, FL

The arrival of May in Naples marks the beginning of the pre-summer phase with hot and humid conditions. The days grow longer providing sizeable daylight hours for outdoor exploration. This month records the most drastic increase in rainfall, reaching a significant 2.09". The bright, sunny days are further amplified by the continually warming sea water. The inherent humidity and rainfall in May make it a notable time for witnessing Florida's tropical climate.

Temperature

The introduction of May notes a subtle temperature variation to a still moderately hot 84.4°F from April's 81°F. In Naples, the May nights cool down to an average low of 74.1°F.

Heat index

In May, the average heat index is computed to be a tropical 93.2°F. Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Consider that heat index readings are for situations in the shade and light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In May, the average relative humidity is 73%.

Rainfall

In May, the rain falls for 15.3 days. Throughout May, 2.09" of precipitation is accumulated. Throughout the year, in Naples, there are 162.1 rainfall days, and 21.69" of precipitation is accumulated.

Ocean temperature

In Naples, Florida, in May, the average water temperature is 80.1°F.
Note: Water surface temperatures from 77°F to 84.2°F are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

In Naples, the average length of the day in May is 13h and 26min.
On the first day of May, sunrise is at 6:49 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 8:14 pm EDT.

Sunshine

The months with the most sunshine in Naples are May and July, 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 Naples. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Beware! Reflections from sand and water can intensify the Sun's UV radiation.