September weather forecast
Cabo Rojo, PR

September weather in Cabo Rojo is a transition from the rains of August, with rainfall rates slightly reducing to 3.58" (91mm). However, the city continues to provide ample opportunities to make the most of the diverse weather. The inviting Cabo Rojo climate persistently encourages everyone to actively partake in the city's offerings.

Temperature

September's onset records a minor alteration in the average high-temperature to a still moderately hot 85.6°F (29.8°C) from August's 85.8°F (29.9°C). Cabo Rojo notes a steady average temperature of 78.6°F (25.9°C) during the nights of September.

Heat index

September's mean heat index is calculated to be a very hot 96.8°F (36°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in Cabo Rojo, Puerto Rico, is 77%.

Rainfall

The month with the most rainfall in Cabo Rojo, Puerto Rico, is September, when the rain falls for 21.7 days and typically aggregates up to 3.58" (91mm) of precipitation.

Daylight

In Cabo Rojo, Puerto Rico, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 6:14 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:17 pm AST.

Sunshine

In Cabo Rojo, the average sunshine in September is 9.3h.

UV index

The months with the highest UV index are March through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 during September leads to these advisories:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.