June weather forecast
Key West, FL

June is a distinct month for Key West, as the average temperatures now consistently reach past the 80-degree mark, signifying the start of summer. The perpetual humidity, combined with the recurrent rainfall, brings a unique charm to the city. With longer daylight hours, beach and water-sport activities reach their peak. Nonetheless, June features the highest recorded temperatures, topping at 83.3°F, contributing to the tropical allure for those seeking warmth.

Temperature

June's beginning in Key West, Florida, signals an average high-temperature of a still moderately hot 83.3°F, barely different from May's 80.2°F. In Key West, June is characterized by an average low-temperature of 81.5°F, indicating a minor drop from daytime highs.

Heat index

The heat index value during June is estimated at a tropical 91.4°F. Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

In June, the average relative humidity is 77%.

Rainfall

In Key West, during June, the rain falls for 19.5 days and regularly aggregates up to 3.46" of precipitation. In Key West, Florida, during the entire year, the rain falls for 199.2 days and collects up to 31.61" of precipitation.

Ocean temperature

In Key West, in June, the average water temperature is 83.3°F.
Note: For any water activity, surface water temperatures from 77°F to 84.2°F are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

The month with the longest days in Key West is June, with an average of 13h and 36min of daylight.
On the first day of June, sunrise is at 6:38 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 8:20 pm EDT.

Sunshine

In June, the average sunshine is 10.6h.

UV index

April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In June, the average maximum UV index of 7 translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Caution! The mirror effect of sand and water ups the UV radiation strength.