September weather forecast
Dessalines, Haiti

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Weather in September

September, while leaning towards the end of the wet season, exhibits its own unique weather features in Dessalines. The city sees a gradual decline in both temperature and rainfall, presenting a departure from the rain-soaked month of August. A characteristic weather pattern in September is the marginal rainfall decrease down to 101mm (3.98") from August's peak of 97mm (3.82"). The transition into October ensures this decline continues, allowing room for more subdued weather patterns.

Temperature

The introduction of September notes a subtle temperature variation to a moderately hot 29.8°C (85.6°F) from August's 30.4°C (86.7°F). The average low-temperature of 23.1°C (73.6°F) is witnessed in Dessalines during September.

Heat index

The average heat index in September is estimated at a very hot 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in September in Dessalines, Haiti, is 79%.

Rainfall

In Dessalines, during September, the rain falls for 23.6 days and regularly aggregates up to 101mm (3.98") of precipitation. In Dessalines, during the entire year, the rain falls for 219.6 days and collects up to 736mm (28.98") of precipitation.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September in Dessalines, 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 18:38 EDT.

Sunshine

The average sunshine in September is 10.1h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Dessalines. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

How hot is September in Dessalines?

In Dessalines, in September, the average high-temperature is 29.8°C (85.6°F), and the average low-temperature is 23.1°C (73.6°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in September is estimated at 37°C (98.6°F).

What is the average humidity in September in Dessalines?

In Dessalines, the average relative humidity in September is 79%.

How much does it rain in Dessalines in September?

In September, in Dessalines, Haiti, the rain falls for 23.6 days. Throughout September, 101mm (3.98") of precipitation is accumulated.

What is the average length of the day in September in Dessalines?

In Dessalines, the average day length in September is 12h and 14min.

When is the sunrise / sunset in September in Dessalines?

On the first day of September in Dessalines, 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 18:38 EDT.

How long on average sun shines in September in Dessalines?

In September, the average sunshine duration is 10.1h.

What are the months with the highest UV index in Dessalines?

April through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index intensity in September in Dessalines?

In September, the average daily maximum UV index in Dessalines is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in September
Dessalines, Haiti

Average temperature in September - Dessalines, Haiti
  • Average high temperature in September: 29.8°C

The warmest month (with the highest average high temperature) is July (30.7°C).
The month with the lowest average high temperature is January (27.3°C).

  • Average low temperature in September: 23.1°C

The month with the highest average low temperature is July (23.5°C).
The coldest month (with the lowest average low temperature) is January (20.1°C).

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Average pressure in September
Dessalines, Haiti

Average pressure in September - Dessalines, Haiti
  • Average pressure in September: 1013.2mbar

The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

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Average wind speed in September
Dessalines, Haiti

Average wind speed in September - Dessalines, Haiti
  • Average wind speed in September: 7km/h

The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).

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Average humidity in September
Dessalines, Haiti

Average humidity in September - Dessalines, Haiti
  • Average humidity in September: 79%

The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are March and April (74%).

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Average rainfall in September
Dessalines, Haiti

Average rainfall in September - Dessalines, Haiti
  • Average rainfall in September: 101mm

The wettest month (with the highest rainfall) is May (118mm).
The driest months (with the least rainfall) are January and December (13mm).

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Average rainfall days in September
Dessalines, Haiti

Average rainfall days in September - Dessalines, Haiti
  • Average rainfall days in September: 23.6 days

The month with the highest number of rainy days is May (25.3 days).
The month with the least rainy days is December (8.5 days).

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Average daylight in September /
Average sunshine in September
Dessalines, Haiti

Average daylight in September / Average sunshine in September - Dessalines, 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: 10h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 12min).

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Average sunshine days in September
Dessalines, Haiti

Average sunshine days in September - Dessalines, Haiti
  • Average sunshine days in September: 3.2 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is September (3.2 days).

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Average UV index in September
Dessalines, Haiti

Average UV index in September - Dessalines, Haiti
  • Average UV index in September: 7

The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 6).

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Average cloud cover in September
Dessalines, Haiti

Average cloud cover in September - Dessalines, Haiti
  • Average cloud cover in September: 24

The month with the most cloud cover is May (Cloud cover 32).
The month with the least cloud cover is December (Cloud cover 18).

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Average visibility in September
Dessalines, Haiti

Average visibility in September - Dessalines, 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).

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Dessalines, Haiti

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