September weather forecastLafiteau, Haiti
September weather forecast for Lafiteau, Haiti: The first month of the autumn, September, is still a warm month in Lafiteau, Haiti, with temperature in the range of an average high of 29.9°C (85.8°F) and an average low of 21.1°C (70°F). The average heat index, which represents the influence of relative humidity on air temperature, in September is evaluated at 37°C (98.6°F).
September
Weather in September
The first month of the autumn, September, is still a warm month in Lafiteau, Haiti, with temperature in the range of an average high of 29.9°C (85.8°F) and an average low of 21.1°C (70°F).Temperature
September notes an average high-temperature of a moderately hot 29.9°C (85.8°F), subtly differing from August's 30.9°C (87.6°F). Lafiteau usually reports an average low-temperature of 21.1°C (70°F) during the month of September.Heat index
The average heat index in September is evaluated at a very hot 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
The average relative humidity in September is 77%.Rainfall
September is the month with the most rainfall. Rain falls for 23 days and accumulates 144mm (5.67") of precipitation.Daylight
In September, the average length of the day is 12h and 14min.On the first day of the month, sunrise is at 06:34 and sunset at 19:03. On the last day of September, sunrise is at 06:39 and sunset at 18:38 EDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The months with the lowest UV index are January through May, July through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Fend off overexposure. Sun protection is vital. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lafiteau, Haiti
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (27.6°C).
- Average low temperature in September: 21.1°C
The month with the highest average low temperature is August (21.3°C).
The coldest month (with the lowest average low temperature) is January (18.2°C).
Average pressure in September
Lafiteau, Haiti
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).
Average wind speed in September
Lafiteau, Haiti
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is June (9.2km/h).
The calmest month (with the lowest average wind speed) is September (6.3km/h).
Average humidity in September
Lafiteau, Haiti
- Average humidity in September: 77%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is February (72%).
Average rainfall in September
Lafiteau, Haiti
- Average rainfall in September: 144mm
The wettest month (with the highest rainfall) is September (144mm).
The driest month (with the least rainfall) is January (12mm).
Average rainfall days in September
Lafiteau, Haiti
- Average rainfall days in September: 23 days
The months with the highest number of rainy days are April and October (24.4 days).
The month with the least rainy days is January (9.9 days).
Average daylight in September /
Average sunshine in September
Lafiteau, 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 0min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 7h and 12min).
Average sunshine days in September
Lafiteau, Haiti
- Average sunshine days in September: 4.3 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (3.3 days).
Average UV index in September
Lafiteau, Haiti
- Average UV index in September: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Lafiteau, Haiti
- Average cloud cover in September: 29
The month with the most cloud cover is April (Cloud cover 35).
The month with the least cloud cover is December (Cloud cover 21).
Average visibility in September
Lafiteau, Haiti
- Average visibility in September: 9km
The months with the highest visibility are February, March and June (10km).
The months with the lowest visibility are January, April, May, July, August, September, October, November and December (9km).
