September weather forecast and climate
La Retraite, Saint Lucia

Weather in September

September, the first month of the autumn, in La Retraite, is also a hot month, with average temperature fluctuating between 24°C (75.2°F) and 30°C (86°F).

Temperature

The warmest months are May through October, with an average high-temperature of 30°C (86°F).

Rainfall

In La Retraite, in September, during 25 rainfall days, 224mm (8.82") of precipitation is typically accumulated. In La Retraite, during the entire year, the rain falls for 209 days and collects up to 2035mm (80.12") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In La Retraite, the average length of the day in September is 12.2h.

Sunshine

January through September, November and December, with an average of 8h of sunshine, are months with the most sunshine in La Retraite, Saint Lucia.

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What are the warmest months in La Retraite?

Warmest months are May through October, with an average high-temperature of 30°C (86°F).

What is the temperature in September in La Retraite?

In La Retraite, Saint Lucia, in September, the average high-temperature is 30°C (86°F), and the average low-temperature is 24°C (75.2°F).

How much does it rain in La Retraite in September?

In La Retraite, in September, during 25 rainfall days, 224mm (8.82") of precipitation is typically accumulated.

What months are the sea warmest in La Retraite?

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in La Retraite.

What is the sea water temperature in September in La Retraite?

In La Retraite, Saint Lucia, in September, the average water temperature is 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does La Retraite have in September?

The average length of the day in September is 12.2h.

What is the month with the most sunshine in La Retraite?

January through September, November and December, with an average of 8h of sunshine, are months with the most sunshine.

How long on average sun shines in September in La Retraite?

The average sunshine in September in La Retraite, Saint Lucia, is 8h.

What is the month with the highest UV index in La Retraite?

March through September, with an average maximum UV index of 12, are months with the highest UV index in La Retraite.

What is the UV index intensity in September in La Retraite?

In La Retraite, the average daily maximum UV index in September is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays.

Average temperature in September
La Retraite, Saint Lucia

Average temperature in September - La Retraite, Saint Lucia
  • Average high temperature in September: 30°C

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (30°C).
Months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is July (25°C).
The coldest months (with the lowest average low temperature) are January, February and March (22°C).

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Average rainfall in September
La Retraite, Saint Lucia

Average rainfall in September - La Retraite, Saint Lucia
  • Average rainfall in September: 224mm

The wettest month (with the highest rainfall) is October (269mm).
The driest month (with the least rainfall) is March (76mm).

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Average rainfall days in September
La Retraite, Saint Lucia

Average rainfall days in September - La Retraite, Saint Lucia
  • Average rainfall days in September: 25 days

The month with the highest number of rainy days is September (25 days).
The month with the least rainy days is April (11 days).

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Average sea temperature in September
La Retraite, Saint Lucia

Average sea temperature in September - La Retraite, Saint Lucia
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

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Average daylight in September /
Average sunshine in September
La Retraite, Saint Lucia

Average daylight in September / Average sunshine in September - La Retraite, Saint Lucia
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 8h

Months with the most sunshine are January, February, March, April, May, June, July, August, September, November and December (Average sunshine: 8h).
The month with the least sunshine is October (Average sunshine: 7h).

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Average UV index in September
La Retraite, Saint Lucia

Average UV index in September - La Retraite, Saint Lucia
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

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