September weather forecastSource Blanche, Haiti
September
Weather in September
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Source Blanche, Haiti
- Average high temperature in September: 29.1°C
The warmest month (with the highest average high temperature) is August (29.3°C).
The months with the lowest average high temperature are January and March (26.8°C).
- Average low temperature in September: 26.1°C
The month with the highest average low temperature is August (26.2°C).
The coldest month (with the lowest average low temperature) is March (23.4°C).
Average pressure in September
Source Blanche, Haiti
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is October (1011.7mbar).
Average wind speed in September
Source Blanche, Haiti
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is June (18.9km/h).
The calmest month (with the lowest average wind speed) is November (11.3km/h).
Average humidity in September
Source Blanche, Haiti
- Average humidity in September: 78%
The months with the highest relative humidity are May, June and July (79%).
The months with the lowest relative humidity are January, February, March and December (76%).
Average rainfall in September
Source Blanche, Haiti
- Average rainfall in September: 70mm
The wettest month (with the highest rainfall) is October (95mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in September
Source Blanche, Haiti
- Average rainfall days in September: 20.5 days
The month with the highest number of rainy days is May (23.7 days).
The months with the least rainy days are June and December (15.2 days).
Average daylight in September /
Average sunshine in September
Source Blanche, Haiti
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 10h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
Source Blanche, Haiti
- Average sunshine days in September: 5.3 days
The month with the most sunshine days is June (9.6 days).
The month with the least sunshine days is April (2.8 days).
Average UV index in September
Source Blanche, Haiti
- Average UV index in September: 7
The months with the highest UV index are January, February, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is March (UV index 6).
Average cloud cover in September
Source Blanche, Haiti
- Average cloud cover in September: 23
The months with the most cloud cover are April and May (Cloud cover 29).
The months with the least cloud cover are January and December (Cloud cover 20).
Average visibility in September
Source Blanche, Haiti
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
