La Retraite
Saint Lucia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
La Retraite, Saint Lucia

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

Temperature

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

Rainfall

In La Retraite, it is raining for 25 days, with typically 224mm (8.8") of accumulated precipitation. In La Retraite, during the entire year, the rain falls for 209 days and collects up to 2035mm (80.1") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater. For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

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

UV index

Months with the highest UV index in La Retraite are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
In September, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. 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.

What are the warmest months in La Retraite?

May through October, with an average high-temperature of 30°C (86°F), are warmest months in La Retraite, Saint Lucia.

What is the temperature in September in La Retraite?

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

How many days does it rain in September in La Retraite?

In September, in La Retraite, the rain falls for 25 days. Throughout September, 224mm (8.8") of precipitation is accumulated.

What are the months with the warmest sea water 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. 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.

How warm is the water in September in La Retraite?

In September, the average sea temperature in La Retraite 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.

What is the average length of the day in September in La Retraite?

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

What are the months with the most sunshine in La Retraite?

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

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

In September, the average sunshine is 8h.

What are the months with the highest UV index in La Retraite?

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

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 of 11, and more, symbolizes an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - La Retraite, Saint Lucia
  • Average high temperature in September: 30°C

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).
Coldest months (with the lowest average low temperature) are January, February and March (22°C).

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 lowest rainfall) is March (76mm).

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 lowest number of rainy days is April (11 days).

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

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

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 shortest days is December (Average daylight: 11.3h).

  • Average sunshine in September: 8h

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

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).