June weather forecast
Greenwich, Jamaica

June, the first month of the summer in Greenwich, is still a tropical month, with an average temperature varying between 30.8°C (87.4°F) and 23°C (73.4°F).

Temperature

The arrival of June coincides with an average high-temperature of a still tropical 30.8°C (87.4°F), indicating a minimal shift from May's 30.3°C (86.5°F). In the month of June, the temperature generally rests at an average low of 23°C (73.4°F).

Heat index

The heat index value during June is appraised at a blisteringly hot 40°C (104°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Greenwich, the average relative humidity in June is 79%.

Rainfall

In June, in Greenwich, the rain falls for 20.5 days. Throughout June, 84mm (3.31") of precipitation is accumulated. In Greenwich, during the entire year, the rain falls for 265.1 days and collects up to 806mm (31.73") of precipitation.

Daylight

With an average of 13h and 12min of daylight, June has the longest days of the year in Greenwich.
On the first day of the month, sunrise is at 05:31 and sunset at 18:40. On the last day of June, in Greenwich, sunrise is at 05:35 and sunset at 18:47 EST.

Sunshine

In June, the average sunshine in Greenwich is 10.1h.

UV index

May through August and October, 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 average individuals.
Note: The UV index of 7 during June translates into the following guidance:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.