June weather forecast
Key Largo, FL

June represents the mid-summer season in Key Largo, showing an upward trend from May in humidity and rainfall. Although lesser sunshine hours are available, the length of the day remains almost constant. Sudden tropical rain showers are often complemented by intermittent sunny spells, painting incredible rainbow scenes across the island city. The sea continues to remain warm, favouring a multitude of marine activities throughout June. The temperature peaks at 83.7°F (28.7°C) with the highest recorded rainfall of 3.31" (84mm) for the year.

Temperature

The start of June sees the average high-temperature at a still moderately hot 83.7°F (28.7°C), showing little difference from May's 80.6°F (27°C). In Key Largo, the nighttime temperature in June descends gently to an average of 81.1°F (27.3°C).

Heat index

Throughout June, the heat index is estimated at a hot 91.4°F (33°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The months with the highest humidity are February, June and December, with an average relative humidity of 76%.

Rainfall

In Key Largo, in June, during 20.1 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. Throughout the year, there are 190.1 rainfall days, and 27.05" (687mm) of precipitation is accumulated.

Ocean temperature

In June, the average ocean temperature is 83.7°F (28.7°C).
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

With an average of 13h and 42min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 6:31 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 8:15 pm EDT.

Sunshine

The average sunshine in June in Key Largo is 10.5h.

UV index

The months with the highest UV index are April through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In June, a daily maximum UV index of 7 leads to the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take heed! Reflections of sand and water make the Sun's UV rays stronger.