June weather forecast
Sanibel, FL

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A large flock of the iconic royal tern birds on the white sandy shores on a typical beach in Sanibel, Florida
A large flock of the iconic royal tern birds on the white sandy shores on a typical beach in Sanibel, Florida

Weather in June

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.
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Frequently asked questions

How hot is it in Sanibel in June?

The average high-temperature and low-temperature in Sanibel during June are 86°F (30°C) and 79°F (26.1°C) respectively. In June, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 96.8°F (36°C).

What is the average humidity in June in Sanibel?

The average relative humidity in June in Sanibel, Florida, is 75%.

How many days does it rain in June in Sanibel?

In Sanibel, in June, it is raining for 23.3 days, with typically 5.71" (145mm) of accumulated precipitation.

How warm is the water in June in Sanibel?

In Sanibel, Florida, in June, the average water temperature is 82.9°F (28.3°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

When are the longest days in Sanibel?

The month with the longest days is June, with an average of 13h and 48min of daylight.

How many hours of daylight does Sanibel have in June?

In June, the average day length in Sanibel is 13h and 46min.

What time are sunrise and sunset in June in Sanibel?

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.

How long on average sun shines in June in Sanibel?

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

What is the month with the highest UV index in Sanibel?

The months with the highest UV index in Sanibel are May through September, with an average maximum UV index of 7.

What is the UV index reading in June in Sanibel?

In June, the average daily maximum UV index in Sanibel is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Sanibel, FL

Average temperature in June - Sanibel, FL
  • Average high temperature in June: 86°F

The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (69.8°F).

  • Average low temperature in June: 79°F

The month with the highest average low temperature is August (81.1°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

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Average pressure in June
Sanibel, FL

Average pressure in June - Sanibel, FL
  • Average pressure in June: 29.99"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in June
Sanibel, FL

Average wind speed in June - Sanibel, FL
  • Average wind speed in June: 7.3mph

The windiest months (with the highest average wind speed) are October and November (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

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Average humidity in June
Sanibel, FL

Average humidity in June - Sanibel, FL
  • Average humidity in June: 75%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are March, May, July, August and October (73%).

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Average rainfall in June
Sanibel, FL

Average rainfall in June - Sanibel, FL
  • Average rainfall in June: 5.71"

The wettest month (with the highest rainfall) is August (8.54").
The driest month (with the least rainfall) is February (1.06").

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Average rainfall days in June
Sanibel, FL

Average rainfall days in June - Sanibel, FL
  • Average rainfall days in June: 23.3 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (8.2 days).

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Average sea temperature in June
Sanibel, FL

Average sea temperature in June - Sanibel, FL
  • Average sea temperature in June: 82.9°F

The best month for swimming (with the highest average sea temperature) is August (87.1°F).
The coldest month (with the lowest average sea temperature) is January (65.3°F).

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Average daylight in June /
Average sunshine in June
Sanibel, FL

Average daylight in June / Average sunshine in June - Sanibel, FL
  • Average daylight in June: 13h and 5min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in June: 10h and 5min

The month with the most sunshine is May (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in June
Sanibel, FL

Average sunshine days in June - Sanibel, FL
  • Average sunshine days in June: 4.6 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is August (2.3 days).

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Average UV index in June
Sanibel, FL

Average UV index in June - Sanibel, FL
  • Average UV index in June: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and February (UV index 5).

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Average cloud cover in June
Sanibel, FL

Average cloud cover in June - Sanibel, FL
  • Average cloud cover in June: 28

The month with the most cloud cover is January (Cloud cover 29).
The months with the least cloud cover are March and May (Cloud cover 23).

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Average visibility in June
Sanibel, FL

Average visibility in June - Sanibel, FL
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Sanibel, Florida, USA

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