June weather forecast
Sanibel, FL

Come June, Sanibel's weather varies noticeably from that of May. June introduces appreciable adjustments in the city's climate, aligning more with summer norms of high heat and rainfall. The average daily temperature reaches around 86°F (30°C), testifying to the city's warm season. Furthermore, June sees vibrantly clear skies, considerable sunshine, and extended daylight hours, enhancing the city's summer allure. Harmoniously, the weather in June supports Sanibel's status as a prime summer destination, serving up an ideal mix of heat, humidity, and whole days of daylight.

Temperature

Shifting into June, Sanibel records an average high-temperature of a tropical 86°F (30°C), presenting minor fluctuations compared to the previous month. Nighttime, during June, brings an average low of 79°F (26.1°C), a modest reduction from the day's peak.

Heat index

The heat index value for June is estimated at a fiery hot 96.8°F (36°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In June, the average relative humidity is 75%.

Rainfall

In Sanibel, during June, the rain falls for 23.3 days and regularly aggregates up to 5.71" (145mm) of precipitation. Throughout the year, there are 190.9 rainfall days, and 41.73" (1060mm) of precipitation is accumulated.

Ocean temperature

In June, the average ocean temperature in Sanibel is 82.9°F (28.3°C).
Note: Swimming, diving, and other water activities in the temperature range of 77°F (25°C) to 84.2°F (29°C) are perceived as very enjoyable and comfortable for prolonged durations.

Daylight

With an average of 13h and 48min of daylight, June has the longest days of the year.
On the first day of June in Sanibel, sunrise is at 6:35 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 8:25 pm EDT.

Sunshine

In Sanibel, the average sunshine in June is 10.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 during June leads to these advisories:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.