September weather forecast
Jarabacoa, Dominican Republic

As September arrives, the city witnesses a subtle transition towards the end of the tropical season. The decrease in temperature is evident, although a maximum of 29.3°C (84.7°F) suggests it’s still hot in Jarabacoa. Furthermore, the city prepares for heavy showers with rainfall reaching a significant 142mm (5.59"). With an average of 12.2 hours of daylight and 9 hours of sunshine per day, the city stays bright despite the changing weather patterns. The tropical season persists yet starts to show signs of its eventual decline.

Temperature

During September, the average high-temperature is a still warm 29.3°C (84.7°F), maintaining a close resemblance to that of the preceding month. An average low-temperature of 19.5°C (67.1°F) is expected in Jarabacoa during September.

Heat index

September's mean heat index is estimated at a torrid 36°C (96.8°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. 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 September in Jarabacoa is 82%.

Rainfall

In September, the rain falls for 26.8 days. Throughout September, 142mm (5.59") of precipitation is accumulated. In Jarabacoa, during the entire year, the rain falls for 260 days and collects up to 959mm (37.76") of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of September, sunrise is at 06:27 and sunset at 18:56. On the last day of the month, sunrise is at 06:33 and sunset at 18:31 AST.

Sunshine

The months with the most sunshine in Jarabacoa are June, August and September, with an average of 9h of sunshine.

UV index

The months with the highest UV index are January, March through November, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during September translates into the following guidance:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.