September weather forecast
Sibert, Haiti

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Sibert, Haiti, with an average temperature ranging between min 21.3°C (70.3°F) and max 29.8°C (85.6°F).

Temperature

The onset of September brings an average high-temperature of a warm 29.8°C (85.6°F), nearly matching the August temperature. The nights of September anticipate an average low-temperature of 21.3°C (70.3°F).

Heat index

The heat index value for September is appraised at a sweltering 36°C (96.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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 body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Sibert, in September, during 22.4 rainfall days, 135mm (5.31") of precipitation is typically accumulated. Throughout the year, in Sibert, there are 227.4 rainfall days, and 904mm (35.59") of precipitation is accumulated.

Daylight

In Sibert, the average length of the day in September 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

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. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

How hot is it in September?
The average high-temperature, in September, in Sibert, is 29.8°C (85.6°F), while the average low-temperature is 21.3°C (70.3°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 36°C (96.8°F).
What is the average humidity in September?
In Sibert, the average relative humidity in September is 77%.
How many days does it rain in September?
In September, the rain falls for 22.4 days. Throughout September, 135mm (5.31") of precipitation is accumulated.
How many hours of daylight does Sibert have in September?
In Sibert, the average day length in September is 12h and 14min.
When is the sunrise / sunset in September?
On the first day of September, sunrise is at 06:34 and sunset at 19:03. On the last day of the month, sunrise is at 06:39 and sunset at 18:38 EDT.
How long on average sun shines in September?
In Sibert, the average sunshine duration in September is 9.6h.
What is the month with the lowest UV index in Sibert?
The months with the lowest UV index are January through May, July through December, with an average maximum UV index of 6.
What is the UV index intensity in September in Sibert?
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Sibert, 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
Sibert, 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
Sibert, 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
Sibert, 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
Sibert, 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
Sibert, 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
Sibert, 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 0min).

  • Average sunshine in September: 9h and 4min

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
Sibert, 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
Sibert, 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
Sibert, 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
Sibert, 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).

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