September weather forecast
Source Blanche, Haiti

The first month of the autumn, September, is also a moderately hot month in Source Blanche, Haiti, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 26.1°C (79°F).

Temperature

As Source Blanche, Haiti, transitions from August to September, the average high-temperatures adjust to a still moderately hot 29.1°C (84.4°F), nearly the same as the previous 29.3°C (84.7°F). The nights of September in Source Blanche anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 26.1°C (79°F).

Heat index

In September, the average heat index is appraised at a very hot 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 quite important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In September, the average relative humidity in Source Blanche is 78%.

Rainfall

In September, in Source Blanche, the rain falls for 20.5 days. Throughout September, 70mm (2.76") of precipitation is accumulated. Throughout the year, in Source Blanche, there are 234.5 rainfall days, and 663mm (26.1") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September in Source Blanche, sunrise is at 06:38 and sunset at 19:06. On the last day of the month, sunrise is at 06:43 and sunset at 18:41 EDT.

Sunshine

In Source Blanche, the average sunshine in September is 10.1h.

UV index

January, February, April through December, with an average maximum UV index of 7, are months with the highest UV index in Source Blanche. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.