June weather forecast
Black River, Jamaica

June marks the beginning of summer in Black River with temperatures increasing from 21.4°C (70.5°F) to a very warm 29.3°C (84.7°F). This change also paves the way for an equally remarkable amplification of the sea temperature. While rainfall recedes somewhat from the high of May, it is the powerful winds reaching speeds up to 11km/h (6.8mph) that become the main characteristic of the month. The abundance of sunshine further instils the authentic summer vibe that June is known for.

Temperature

In the transition from May to June, Black River reports an average high-temperature of a still moderately hot 29.3°C (84.7°F), indicating a close resemblance to the prior month. During June, Black River sees a mean low-temperature of 21.4°C (70.5°F).

Heat index

The heat index value for June is estimated at a sweltering 36°C (96.8°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Black River, the average relative humidity in June is 82%.

Rainfall

In Black River, during June, the rain falls for 21.1 days and regularly aggregates up to 94mm (3.7") of precipitation. Throughout the year, in Black River, there are 297.9 rainfall days, and 1472mm (57.95") of precipitation is accumulated.

Sea temperature

In Black River, the average seawater temperature in June is 28.6°C (83.5°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

The month with the longest days in Black River, Jamaica, is June, with an average of 13h and 12min of daylight.
On the first day of June in Black River, sunrise is at 05:34 and sunset at 18:43. On the last day of the month, sunrise is at 05:39 and sunset at 18:51 EST.

Sunshine

The average sunshine in June in Black River is 9.6h.

UV index

June and July, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in June translates into this advice:
Shield from overexposure. Defense against sun-related harm is required. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.