September weather forecast
Vigie, Saint Lucia

September

Weather in September

Transitioning into the fall season, September in Vigie, Saint Lucia, presents a subtle decrease in temperature while carrying forward the charm of the tropical climate. The rain experienced in August gradually starts to wind down. As the wind goes down another notch to 16.7km/h (10.4mph), it helps maintain an equilibrium with the declining temperatures. The month's classic highlight lies in its winning concoction of sunny weather, moderate rainfall of 63mm (2.48"), and soothing winds, articulating an appealing weather pattern.

Temperature

Temperature readings in Vigie reach their annual highs in September, averaging 30.3°C (86.5°F) and a minimum average of 27°C (80.6°F).

Heat index

In September, the heat index is calculated to be a fiery hot 37°C (98.6°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

January through March and September, with an average relative humidity of 73%, are the least humid months.

Rainfall

In September, the rain falls for 20.3 days. Throughout September, 63mm (2.48") of precipitation is accumulated. Throughout the year, there are 255.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of September, sunrise is at 05:53 and sunset at 17:54 AST.

Sunshine

In September, the average sunshine is 9.6h.

UV index

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

What month is the hottest?
With average high and low temperatures of 30.3°C (86.5°F) and 27°C (80.6°F) respectively, September is Vigie's warmest month.
How hot is it in September?
In September, the average high-temperature and low-temperature are 30.3°C (86.5°F) and 27°C (80.6°F) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 37°C (98.6°F).
What is the least humid month?
January through March and September, with an average relative humidity of 73%, are the least humid months in Vigie.
What is the average humidity in September?
In Vigie, the average relative humidity in September is 73%.
How much does it rain in September?
In Vigie, during September, the rain falls for 20.3 days and regularly aggregates up to 63mm (2.48") of precipitation.
What is the average length of the day in September?
The average day length in September is 12h and 13min.
When is the sunrise / sunset in September?
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.
How long on average sun shines in September?
In Vigie, the average sunshine duration in September is 9.6h.
When is the highest UV index?
The months with the highest UV index are January through May, July through December, with an average maximum UV index of 7.
What is the UV index intensity in September in Vigie?
In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability 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 - Vigie, Saint Lucia
Average temperature in September
Vigie, Saint Lucia
  • Average high temperature in September: 30.3°C

The warmest month (with the highest average high temperature) is September (30.3°C).
The months with the lowest average high temperature are January and February (27.5°C).

  • Average low temperature in September: 27°C

The month with the highest average low temperature is October (27.2°C).
The coldest month (with the lowest average low temperature) is March (25°C).

Average pressure in September - Vigie, Saint Lucia
Average pressure in September
Vigie, Saint Lucia
  • Average pressure in September: 1012.6mbar

The month with the highest atmospheric pressure is June (1015mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).

Average wind speed in September - Vigie, Saint Lucia
Average wind speed in September
Vigie, Saint Lucia
  • Average wind speed in September: 16.7km/h

The windiest month (with the highest average wind speed) is February (24.7km/h).
The calmest month (with the lowest average wind speed) is September (16.7km/h).

Average humidity in September - Vigie, Saint Lucia
Average humidity in September
Vigie, Saint Lucia
  • Average humidity in September: 73%

The months with the highest relative humidity are May, June, July, August and November (75%).
The months with the lowest relative humidity are January, February, March and September (73%).

Average rainfall in September - Vigie, Saint Lucia
Average rainfall in September
Vigie, Saint Lucia
  • Average rainfall in September: 63mm

The wettest month (with the highest rainfall) is August (82mm).
The driest month (with the least rainfall) is February (19mm).

Average rainfall days in September - Vigie, Saint Lucia
Average rainfall days in September
Vigie, Saint Lucia
  • Average rainfall days in September: 20.3 days

The month with the highest number of rainy days is July (26.5 days).
The month with the least rainy days is February (16.4 days).

Average daylight in September / Average sunshine in September - Vigie, Saint Lucia
Average daylight in September /
Average sunshine in September
Vigie, 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: 9h and 4min

The month with the most sunshine is April (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in September - Vigie, Saint Lucia
Average sunshine days in September
Vigie, Saint Lucia
  • Average sunshine days in September: 5.2 days

The month with the most sunshine days is January (7.8 days).
The month with the least sunshine days is July (0.8 days).

Average UV index in September - Vigie, Saint Lucia
Average UV index in September
Vigie, Saint Lucia
  • Average UV index in September: 7

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

Average cloud cover in September - Vigie, Saint Lucia
Average cloud cover in September
Vigie, Saint Lucia
  • Average cloud cover in September: 40

The months with the most cloud cover are June and July (Cloud cover 48).
The month with the least cloud cover is February (Cloud cover 38).

Average visibility in September - Vigie, Saint Lucia
Average visibility in September
Vigie, 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).

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