June weather forecast
Cayo Largo, Cuba

June, the first month of the summer in Cayo Largo, is still a hot month, with an average temperature fluctuating between 23.8°C (74.8°F) and 31.4°C (88.5°F).

Temperature

The onset of June brings an average high-temperature of a still hot 31.4°C (88.5°F), nearly matching the May temperature. June's average low-temperature reading settles at a moderately hot 23.8°C (74.8°F).

Heat index

For June, the heat index is evaluated at a blistering 42°C (107.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in June is 79%.

Rainfall

In Cayo Largo, during June, the rain falls for 18.7 days and regularly aggregates up to 89mm (3.5") of precipitation. In Cayo Largo, during the entire year, the rain falls for 143.3 days and collects up to 542mm (21.34") of precipitation.

Daylight

June has the longest days of the year in Cayo Largo, with an average of 13h and 30min of daylight.
On the first day of June, sunrise is at 06:49 and sunset at 20:14. On the last day of the month, sunrise is at 06:53 and sunset at 20:22 CDT.

Sunshine

May and June, with an average of 10.2h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In June, the UV index of 7 transforms into the following advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.