Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
Arniquet ushers in September with an average high-temperature of a still moderately hot 29.2°C (84.6°F), showing a close resemblance to the previous month. September sees a slight dip to an average low temperature of 26°C (78.8°F) from the daytime highs.Heat index
September's mean heat index is estimated at a fiery hot 35°C (95°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The average relative humidity in September is 78%.Rainfall
In Arniquet, in September, it is raining for 21.3 days, with typically 74mm (2.91") of accumulated precipitation. In Arniquet, during the entire year, the rain falls for 235.3 days and collects up to 667mm (26.26") of precipitation.Daylight
In September, the average length of the day in Arniquet is 12h and 14min.On the first day of the month, sunrise is at 06:41 and sunset at 19:09. On the last day of September, sunrise is at 06:45 and sunset at 18:44 EDT.
Sunshine
In Arniquet, the average sunshine in September is 9.8h.UV index
The months with the highest UV index are January, February, April through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Arniquet, Haiti
- Average high temperature in September: 29.2°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°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
Arniquet, 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
Arniquet, Haiti
- Average wind speed in September: 12km/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
Arniquet, 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
Arniquet, Haiti
- Average rainfall in September: 74mm
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
Arniquet, Haiti
- Average rainfall days in September: 21.3 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
Arniquet, Haiti
- Average daylight in September: 12h and 1min
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: 9h and 5min
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 6min).
Average sunshine days in September
Arniquet, Haiti
- Average sunshine days in September: 4.8 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
Arniquet, 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
Arniquet, Haiti
- Average cloud cover in September: 25
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
Arniquet, 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).
