July weather forecast
Black River, Jamaica

The heart of summer is in July, which contains the highest temperatures of the year in Black River ranging from 21.8°C (71.2°F) up to a melting point of 30°C (86°F). The influence of these high temperatures is subtly reflected in the humidity and sea temperature. Despite the high temperatures, the rainfall is back up to 117mm (4.61"). The increase in sunshine hours is quite conspicuous, ensuring that July remains the highlight of the summer season.

Temperature

With the onset of July in Black River, a modest change to a still warm 29.9°C (85.8°F) from June's 29.3°C (84.7°F) is noted in high-temperature. Black River experiences an average low-temperature of 21.8°C (71.2°F) in month of July.

Heat index

July's heat index is estimated at a fiery hot 38°C (100.4°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 highly critical for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The months with the lowest humidity in Black River, Jamaica, are March and July, with an average relative humidity of 81%.

Rainfall

In July, the rain falls for 23.4 days. Throughout July, 117mm (4.61") of precipitation is accumulated. In Black River, Jamaica, during the entire year, the rain falls for 297.9 days and collects up to 1472mm (57.95") of precipitation.

Sea temperature

In Black River, Jamaica, in July, the average water temperature is 29°C (84.2°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In Black River, Jamaica, the average length of the day in July is 13h and 5min.
On the first day of July in Black River, sunrise is at 05:39 and sunset at 18:51. On the last day of the month, sunrise is at 05:49 and sunset at 18:45 EST.

Sunshine

The months with the most sunshine are July and August, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index are June and July, 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 the ordinary person.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take note! The UV strength of the Sun elevates when reflected off water and sand.