July weather forecast
Duncans, Jamaica

July, the same as June, is another warm summer month in Duncans, Jamaica, with an average temperature varying between 26.8°C (80.2°F) and 29.5°C (85.1°F).

Temperature

July's advent presents an average high-temperature of a still warm 29.5°C (85.1°F), indicating a slight variation from the conditions of the previous month. A steady low-temperature average of 26.8°C (80.2°F) is logged in Duncans during July, reflecting a modest dip from daytime readings.

Heat index

The average heat index in July is calculated to be a torrid 35°C (95°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. 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.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in July in Duncans is 77%.

Rainfall

In Duncans, in July, it is raining for 14.1 days, with typically 61mm (2.4") of accumulated precipitation. In Duncans, during the entire year, the rain falls for 177.2 days and collects up to 687mm (27.05") of precipitation.

Daylight

In Duncans, the average length of the day in July is 13h and 7min.
On the first day of July, sunrise is at 05:37 and sunset at 18:50. On the last day of the month, sunrise is at 05:47 and sunset at 18:45 EST.

Sunshine

July and August, with an average of 11.5h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January, March through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In July, an average UV index of 7 transforms into the following instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Boost your sun resistance with garments that are densely woven yet spacious.