September weather forecast
Delmas, Haiti

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Weather in September

By September, Delmas starts transition towards the end of the summer season. The city experiences a slight decrease in temperature in contrast to the preceding month. However, rainfall levels peak at 79mm (3.11"), marking September as the wettest month. Despite high precipitation, the turquoise waters of Delmas's coast remain warm, offering a delightful sea bathing experience. Though bottled up inside due to the rain, hidden culinary delights and colorful indoor markets serve as fantastic alternatives for exploration.

Temperature

Delmas observes a minor difference in average high-temperatures between August's 29.7°C (85.5°F) and September's 29.3°C (84.7°F). The month of September shows a minor drop from daytime temperatures, generally recording a low average of 25.1°C (77.2°F).

Heat index

The heat index for September is computed to be a fiery hot 35°C (95°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

September and October, with an average relative humidity of 77%, are the most humid months.

Rainfall

The month with the most rainfall is September, when the rain falls for 20.2 days and typically aggregates up to 79mm (3.11") of precipitation.

Sea temperature

The month with the warmest seawater is September, with an average sea temperature of 29.8°C (85.6°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

The average length of the day in September in Delmas is 12h and 14min.
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.

Sunshine

The average sunshine in September is 9.6h.

UV index

The months with the highest UV index in Delmas are January, March through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The reflection of water and sand increases the UV radiation significantly.
Updated: Feb 19, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is September in Delmas?

The average high-temperature, in September, in Delmas, is 29.3°C (84.7°F), while the average low-temperature is 25.1°C (77.2°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 35°C (95°F).

What are the most humid months in Delmas?

September and October, with an average relative humidity of 77%, are most humid months.

What is the average humidity in September in Delmas?

The average relative humidity in September in Delmas, Haiti, is 77%.

What is the wettest month in Delmas?

The month with the most rainfall in Delmas is September, when the rain falls for 20.2 days and typically aggregates up to 79mm (3.11") of precipitation.

How many days does it rain in September in Delmas?

In Delmas, Haiti, during September, the rain falls for 20.2 days and regularly aggregates up to 79mm (3.11") of precipitation.

What month is the sea warmest in Delmas?

The month with the warmest seawater in Delmas is September, with an average sea temperature of 29.8°C (85.6°F).

How warm is the water in September in Delmas?

In September, the average sea temperature in Delmas is 29.8°C (85.6°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

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

What time are sunrise and sunset in September in Delmas?

In September, on the first day of the month, sunrise is at 06:34 and sunset at 19:03. On the last day of the month, in Delmas, Haiti, sunrise is at 06:39 and sunset at 18:38 EDT.

How many hours of sunshine does Delmas have in September?

The average sunshine duration in September in Delmas, Haiti, is 9.6h.

When is the highest UV index in Delmas?

January, March through October, with an average maximum UV index of 7, are months with the highest UV index in Delmas.

How high is the UV index in September in Delmas?

In Delmas, the average daily maximum UV index in September 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
Delmas, Haiti

Average temperature in September - Delmas, Haiti
  • Average high temperature in September: 29.3°C

The warmest month (with the highest average high temperature) is August (29.7°C).
The months with the lowest average high temperature are January, February and March (27.2°C).

  • Average low temperature in September: 25.1°C

The months with the highest average low temperature are August and September (25.1°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).

Average pressure in September
Delmas, Haiti

Average pressure in September - Delmas, Haiti
  • Average pressure in September: 1012.9mbar

The month with the highest atmospheric pressure is January (1016mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).

Average wind speed in September
Delmas, Haiti

Average wind speed in September - Delmas, Haiti
  • Average wind speed in September: 9.8km/h

The windiest month (with the highest average wind speed) is June (15.3km/h).
The calmest month (with the lowest average wind speed) is November (8.8km/h).

Average humidity in September
Delmas, Haiti

Average humidity in September - Delmas, Haiti
  • Average humidity in September: 77%

The months with the highest relative humidity are September and October (77%).
The month with the lowest relative humidity is February (72%).

Average rainfall in September
Delmas, Haiti

Average rainfall in September - Delmas, Haiti
  • Average rainfall in September: 79mm

The wettest month (with the highest rainfall) is September (79mm).
The driest month (with the least rainfall) is January (10mm).

Average rainfall days in September
Delmas, Haiti

Average rainfall days in September - Delmas, Haiti
  • Average rainfall days in September: 20.2 days

The month with the highest number of rainy days is October (20.7 days).
The month with the least rainy days is January (9.3 days).

Average sea temperature in September
Delmas, Haiti

Average sea temperature in September - Delmas, Haiti
  • Average sea temperature in September: 29.8°C

The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).

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

Average daylight in September / Average sunshine in September - Delmas, 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 months with the most sunshine are May, June, July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 7h and 24min).

Average sunshine days in September
Delmas, Haiti

Average sunshine days in September - Delmas, Haiti
  • Average sunshine days in September: 7.3 days

The month with the most sunshine days is December (18.7 days).
The month with the least sunshine days is April (6.7 days).

Average UV index in September
Delmas, Haiti

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

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

Average cloud cover in September
Delmas, Haiti

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

The month with the most cloud cover is April (Cloud cover 30).
The month with the least cloud cover is December (Cloud cover 16).

Average visibility in September
Delmas, Haiti

Average visibility in September - Delmas, 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).

Delmas, Haiti

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