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
Dondon experiences an average high-temperature of a still moderately hot 29.5°C (85.1°F) in September, marking an insignificant shift from 29.8°C (85.6°F) in August. Dondon records a mean low-temperature of 24.4°C (75.9°F) in September.Heat index
September's heat index is evaluated at a torrid 36°C (96.8°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In Dondon, the average relative humidity in September is 78%.Rainfall
The month with the most rainfall is September, when the rain falls for 22.9 days and typically aggregates up to 86mm (3.39") of precipitation.Daylight
In Dondon, the average length of the day in September is 12h and 14min.On the first day of September in Dondon, sunrise is at 06:33 and sunset at 19:03. On the last day of the month, sunrise is at 06:39 and sunset at 18:37 EDT.
Sunshine
In Dondon, the average sunshine in September is 9.7h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 during September translates into the following directions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the rainiest month in Dondon?
How many days does it rain in September?
How many hours of daylight does Dondon have 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 reading in September?
Average temperature in September
Dondon, Haiti
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (26.7°C).
- Average low temperature in September: 24.4°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (21.3°C).
Average pressure in September
Dondon, Haiti
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is January (1016.9mbar).
The month with the lowest atmospheric pressure is October (1012.7mbar).
Average wind speed in September
Dondon, Haiti
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is July (15.8km/h).
The calmest month (with the lowest average wind speed) is October (11km/h).
Average humidity in September
Dondon, Haiti
- Average humidity in September: 78%
The month with the highest relative humidity is November (80%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in September
Dondon, Haiti
- Average rainfall in September: 86mm
The wettest month (with the highest rainfall) is September (86mm).
The driest month (with the least rainfall) is December (24mm).
Average rainfall days in September
Dondon, Haiti
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is May (23.4 days).
The month with the least rainy days is February (13.5 days).
Average daylight in September /
Average sunshine in September
Dondon, Haiti
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in September
Dondon, Haiti
- Average sunshine days in September: 4 days
The month with the most sunshine days is January (13.1 days).
The month with the least sunshine days is September (4 days).
Average UV index in September
Dondon, Haiti
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).
Average cloud cover in September
Dondon, Haiti
- Average cloud cover in September: 23
The month with the most cloud cover is March (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 20).
Average visibility in September
Dondon, 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).
