September weather forecastChalon, Haiti
September
Weather in September
September, the first month of the autumn in Chalon, is still a warm month, with an average temperature varying between 25.3°C (77.5°F) and 29.3°C (84.7°F).Temperature
On the advent of September, Chalon's average high-temperature exhibits a minor adjustment to a still moderately hot 29.3°C (84.7°F) from August's 29.7°C (85.5°F). Chalon maintains an average low-temperature of 25.3°C (77.5°F) throughout September's nights.Heat index
The heat index value during September is estimated at a torrid 35°C (95°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Chalon, in September, during 19.3 rainfall days, 71mm (2.8") of precipitation is typically accumulated. Throughout the year, there are 196.7 rainfall days, and 531mm (20.91") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 14min.On the first day of September, sunrise is at 06:37 and sunset at 19:06. On the last day of the month, sunrise is at 06:42 and sunset at 18:41 EDT.
Sunshine
In September, the average sunshine is 9.9h.UV index
The months with the highest UV index in Chalon are January, March through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chalon, Haiti
- Average high temperature in September: 29.3°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The months with the lowest average high temperature are January, February and March (27.2°C).
- Average low temperature in September: 25.3°C
The month with the highest average low temperature is September (25.3°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).
Average pressure in September
Chalon, Haiti
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is January (1016mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).
Average wind speed in September
Chalon, Haiti
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is June (15.3km/h).
The calmest month (with the lowest average wind speed) is November (8.8km/h).
Average humidity in September
Chalon, Haiti
- Average humidity in September: 76%
The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is February (72%).
Average rainfall in September
Chalon, Haiti
- Average rainfall in September: 71mm
The wettest month (with the highest rainfall) is October (75mm).
The driest month (with the least rainfall) is January (10mm).
Average rainfall days in September
Chalon, Haiti
- Average rainfall days in September: 19.3 days
The month with the highest number of rainy days is October (20.7 days).
The month with the least rainy days is January (9.3 days).
Average daylight in September /
Average sunshine in September
Chalon, 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 54min
The months with the most sunshine are May, June, July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 7h and 24min).
Average sunshine days in September
Chalon, Haiti
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is December (18.7 days).
The month with the least sunshine days is April (6.7 days).
Average UV index in September
Chalon, Haiti
- Average UV index in September: 7
The months with the highest UV index are January, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are February, November and December (UV index 6).
Average cloud cover in September
Chalon, Haiti
- Average cloud cover in September: 21
The month with the most cloud cover is April (Cloud cover 30).
The month with the least cloud cover is December (Cloud cover 16).
Average visibility in September
Chalon, 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).
