September weather forecastPasse, Haiti
September
Weather in September
September, the first month of the autumn in Passe, is still a warm month, with an average temperature fluctuating between 21.3°C (70.3°F) and 29.8°C (85.6°F).Temperature
September's arrival registers an average high-temperature of a moderately hot 29.8°C (85.6°F), closely aligning with the temperature of the previous month. In September, Passe experiences an average nighttime temperature of 21.3°C (70.3°F).Heat index
September's mean heat index is calculated to be a very hot 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. 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.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The average relative humidity in September in Passe is 77%.Rainfall
In Passe, Haiti, during September, the rain falls for 22.4 days and regularly aggregates up to 135mm (5.31") of precipitation. Throughout the year, there are 227.4 rainfall days, and 904mm (35.59") of precipitation is accumulated.Daylight
In Passe, Haiti, the average length of the day in September is 12h and 14min.On the first day of September in Passe, Haiti, sunrise is at 06:35 and sunset at 19:04. On the last day of the month, sunrise is at 06:40 and sunset at 18:39 EDT.
Sunshine
The average sunshine in September is 9.6h.UV index
January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index in Passe. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. 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
Passe, Haiti
- Average high temperature in September: 29.8°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: 21.3°C
The months with the highest average low temperature are August and September (21.3°C).
The coldest month (with the lowest average low temperature) is January (18.2°C).
Average pressure in September
Passe, Haiti
- Average pressure in September: 1013.2mbar
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
Passe, Haiti
- Average wind speed in September: 6.5km/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 (6.5km/h).
Average humidity in September
Passe, 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
Passe, Haiti
- Average rainfall in September: 135mm
The wettest month (with the highest rainfall) is May (141mm).
The driest month (with the least rainfall) is January (12mm).
Average rainfall days in September
Passe, Haiti
- Average rainfall days in September: 22.4 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
Passe, 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 36min
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
Passe, Haiti
- Average sunshine days in September: 4.7 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
Passe, 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
Passe, Haiti
- Average cloud cover in September: 27
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
Passe, 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).
