September weather forecast
Debreuil, Saint Lucia

September

Weather in September

September, the first month of the autumn in Debreuil, is also a moderately hot month, with an average temperature varying between 29.5°C (85.1°F) and 27.6°C (81.7°F).

Temperature

During September and October, Debreuil experiences its peak temperatures, averaging a high-temperature of 29.5°C (85.1°F).

Heat index

September's mean heat index is appraised at a very hot 35°C (95°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In Debreuil, the average relative humidity in September is 75%.

Rainfall

In Debreuil, Saint Lucia, in September, it is raining for 19.5 days, with typically 64mm (2.52") of accumulated precipitation. In Debreuil, during the entire year, the rain falls for 232.4 days and collects up to 542mm (21.34") of precipitation.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of September, sunrise is at 05:52 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:54 AST.

Sunshine

In Debreuil, the average sunshine in September is 10.1h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What is the hottest time of year in Debreuil?
During September and October, Debreuil registers its highest temperatures, averaging a high of 29.5°C (85.1°F).
How hot is it in Debreuil in September?
During September, Debreuil experiences an average high-temperature of 29.5°C (85.1°F) and a low-temperature of 27.6°C (81.7°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 35°C (95°F).
What is the average humidity in September in Debreuil?
The average relative humidity in September in Debreuil is 75%.
How much does it rain in Debreuil in September?
In September, the rain falls for 19.5 days. Throughout September, 64mm (2.52") of precipitation is accumulated.
How many hours of daylight does Debreuil have in September?
In Debreuil, Saint Lucia, the average day length in September is 12h and 12min.
When are sunrise and sunset in September in Debreuil?
In September, on the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:54 AST.
How long on average sun shines in September in Debreuil?
The average sunshine duration in September is 10.1h.
What is the month with the highest UV index in Debreuil?
The months with the highest UV index in Debreuil are January through December, with an average maximum UV index of 7.
What are the months with the lowest UV index in Debreuil?
The months with the lowest UV index in Debreuil are January through December, with an average maximum UV index of 7.
How high is the UV index in September in Debreuil?
In September, the average daily maximum UV index in Debreuil is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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
Debreuil, Saint Lucia
  • Average high temperature in September: 29.5°C

The warmest months (with the highest average high temperature) are September and October (29.5°C).
The month with the lowest average high temperature is February (26.8°C).

  • Average low temperature in September: 27.6°C

The month with the highest average low temperature is September (27.6°C).
The coldest month (with the lowest average low temperature) is February (25.3°C).

Average pressure in September
Debreuil, Saint Lucia
  • Average pressure in September: 1012.5mbar

The month with the highest atmospheric pressure is June (1014.9mbar).
The month with the lowest atmospheric pressure is November (1011.3mbar).

Average wind speed in September
Debreuil, Saint Lucia
  • Average wind speed in September: 18.3km/h

The windiest month (with the highest average wind speed) is February (26.9km/h).
The calmest month (with the lowest average wind speed) is September (18.3km/h).

Average humidity in September
Debreuil, Saint Lucia
  • Average humidity in September: 75%

The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January and February (74%).

Average rainfall in September
Debreuil, Saint Lucia
  • Average rainfall in September: 64mm

The wettest month (with the highest rainfall) is October (73mm).
The driest month (with the least rainfall) is February (18mm).

Average rainfall days in September
Debreuil, Saint Lucia
  • Average rainfall days in September: 19.5 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is February (15 days).

Average daylight in September /
Average sunshine in September
Debreuil, Saint Lucia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in September
Debreuil, Saint Lucia
  • Average sunshine days in September: 7.1 days

The month with the most sunshine days is March (9.1 days).
The month with the least sunshine days is July (3.6 days).

Average UV index in September
Debreuil, Saint Lucia
  • Average UV index in September: 7

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

Average cloud cover in September
Debreuil, Saint Lucia
  • Average cloud cover in September: 37

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 35).

Average visibility in September
Debreuil, Saint Lucia
  • 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).

englishespañol中文
Share