May weather forecast
Captiva, FL

May brings the onset of summer in Captiva. A significant temperature jump to 83.1°F (28.4°C) signifies the imminent heat. There's a sharp incline in rainfall reaching 0.63" (16mm), hinting at moister conditions. An extended daylight duration of up to 13.5 hours opens extensive recreational prospects. Nonetheless through the perked UV index and soaring temperatures, Captiva remains an enchanting location.

Temperature

The transition into May shows a subtle variation to a still warm 83.1°F (28.4°C) from April's 79.5°F (26.4°C) in the average high-temperature. Captiva registers an average low-temperature of 74.3°F (23.5°C) throughout May, a modest decrease from its daytime highs.

Heat index

The average heat index in May is computed to be a hot 89.6°F (32°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In May, the average relative humidity in Captiva is 73%.

Rainfall

In Captiva, in May, during 9.3 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, in Captiva, there are 122 rainfall days, and 8.98" (228mm) of precipitation is accumulated.

Ocean temperature

In Captiva, in May, the average water temperature is 78.8°F (26°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 Captiva, the average length of the day in May is 13h and 28min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:01 pm. On the last day of May, sunrise is at 6:35 am and sunset at 8:17 pm EDT.

Sunshine

The month with the most sunshine is May, 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. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 7 during May translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Alert! Sand and water increase UV exposure due to their reflective properties.