September weather forecast
Cas Ariba, Aruba

As Cas Ariba glides into September, the city starts to witness slight variations in its routinely predictable weather. The temperature range tightens, resulting in less fluctuation from day to night. This month's rainfall substantially surges to 57mm (2.24"), marking it as the start of a significantly wet period for the city. Despite the commencement of rainy conditions, daylight hours remain substantial, having minor changes from previous months. The wind speeds ease, enhancing the peaceful ambiance, especially for leisure strolls and bicycling.

Temperature

In Cas Ariba, the average temperatures in September are the highest, with a peak at 29°C (84.2°F) and a low of 28.3°C (82.9°F).

Heat index

September's heat index is appraised at a sweltering 35°C (95°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Cas Ariba, the average relative humidity in September is 80%.

Rainfall

In Cas Ariba, Aruba, during September, the rain falls for 15.5 days and regularly aggregates up to 57mm (2.24") of precipitation. In Cas Ariba, during the entire year, the rain falls for 184.2 days and collects up to 472mm (18.58") of precipitation.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September in Cas Ariba, sunrise is at 06:29 and sunset at 18:50. On the last day of the month, sunrise is at 06:28 and sunset at 18:30 AST.

Sunshine

In September, the average sunshine in Cas Ariba is 9.4h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.