June weather forecast
Rock River, Jamaica

The first month of the summer, June, is a tropical month in Rock River, Jamaica, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 22.8°C (73°F).

Temperature

The advent of June reveals an average high-temperature of a hot 30.3°C (86.5°F), showing minimal difference from the prior month. In the month of June, the nighttime temperature dips to a steady average of 22.8°C (73°F).

Heat index

The heat index in June is calculated to be a very hot 39°C (102.2°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in June is 80%.

Rainfall

In Rock River, Jamaica, in June, during 20.1 rainfall days, 75mm (2.95") of precipitation is typically accumulated. Throughout the year, there are 279.6 rainfall days, and 947mm (37.28") of precipitation is accumulated.

Daylight

June has the longest days of the year in Rock River, with an average of 13h and 12min of daylight.
On the first day of the month, sunrise is at 05:32 and sunset at 18:41. On the last day of June, in Rock River, sunrise is at 05:36 and sunset at 18:48 EST.

Sunshine

In June, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In June, a regular UV index of 7 translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.