September weather forecast
Dauphin, Saint Lucia

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Weather in September

September signals a break in the row of extremely hot months in Dauphin. It witnesses a decrease in both the average temperatures and rainfall, marking the outset of a cooler stage. The gentle wind brings respite and shakes off the stale hot air, making September the month with the least wind speed, at an average of 16.7km/h (10.4mph). The moderately high UV Index mandates safety precautions against solar radiation. In spite of the reduced hours of daylight, the month manages to hold a decent number of sunshine days, setting a comfortable climate for visitors.

Temperature

Dauphin's temperatures tend to reach their peak averages in September, with a high of 30.3°C (86.5°F) and a low of 27°C (80.6°F).

Heat index

September's heat index is computed to be a torrid 37°C (98.6°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

In Dauphin, in September, during 20.3 rainfall days, 63mm (2.48") of precipitation is typically accumulated. Throughout the year, in Dauphin, there are 255.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.

Daylight

The average length of the day in September in Dauphin is 12h and 12min.
On the first day of September in Dauphin, sunrise is at 05:51 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:53 AST.

Sunshine

In Dauphin, the average sunshine in September 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 reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in September transforms into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What part of the year is the hottest in Dauphin?

Dauphin's warmest month, September, registers temperatures that range from a high of 30.3°C (86.5°F) to a low of 27°C (80.6°F).

Is it hot in Dauphin during September?

In Dauphin, in September, the average high-temperature is 30.3°C (86.5°F), and the average low-temperature is 27°C (80.6°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 37°C (98.6°F).

What is the least humid month in Dauphin?

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

What is the average humidity in September in Dauphin?

In Dauphin, Saint Lucia, the average relative humidity in September is 73%.

How many days does it rain in September in Dauphin?

In Dauphin, in September, during 20.3 rainfall days, 63mm (2.48") of precipitation is typically accumulated.

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

The average day length in September in Dauphin, Saint Lucia, is 12h and 12min.

When are sunrise and sunset in September in Dauphin?

On the first day of September in Dauphin, Saint Lucia, sunrise is at 05:51 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:53 AST.

How many hours of sunshine does Dauphin have in September?

The average sunshine duration in September is 9.6h.

When is the highest UV index in Dauphin?

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in September in Dauphin?

In Dauphin, Saint Lucia, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Average temperature in September
Dauphin, Saint Lucia

Average temperature in September - Dauphin, 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
Dauphin, Saint Lucia

Average pressure in September - Dauphin, 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
Dauphin, Saint Lucia

Average wind speed in September - Dauphin, 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
Dauphin, Saint Lucia

Average humidity in September - Dauphin, 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
Dauphin, Saint Lucia

Average rainfall in September - Dauphin, 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
Dauphin, Saint Lucia

Average rainfall days in September - Dauphin, 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
Dauphin, Saint Lucia

Average daylight in September / Average sunshine in September - Dauphin, 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
Dauphin, Saint Lucia

Average sunshine days in September - Dauphin, 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
Dauphin, Saint Lucia

Average UV index in September - Dauphin, 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
Dauphin, Saint Lucia

Average cloud cover in September - Dauphin, 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
Dauphin, Saint Lucia

Average visibility in September - Dauphin, 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).

Dauphin, Saint Lucia

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