Castries City
Saint Lucia
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Castries City, Saint Lucia

A high scenic panorama of the beautiful city of Castries, Saint Lucia
A high scenic panorama of the beautiful city of Castries, Saint Lucia
The last month of the summer, August, is also a hot month in Castries City, Saint Lucia, with average temperature ranging between min 24°C (75.2°F) and max 30°C (86°F).

Temperature

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

Rainfall

In Castries City, during 20 rainfall days, 263mm (10.4") of precipitation is typically accumulated. In Castries City, during the entire year, the rain falls for 208 days and collects up to 2377mm (93.6") of precipitation.

Sea temperature

In Castries City, the average seawater temperature in August is 28°C (82.4°F). 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.

Daylight

In August, the average length of the day is 12.6h.

Sunshine

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

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV radiation for the average person.
In August, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Castries City?

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

What is the temperature in August in Castries City?

The average high-temperature, in August, in Castries City, Saint Lucia, is 30°C (86°F), while the average low-temperature is 24°C (75.2°F).

How much does it rain in Castries City in August?

In August, the rain falls for 20 days. Throughout August, 263mm (10.4") of precipitation is accumulated.

What is the water temperature in August in Castries City?

In Castries City, in August, the average water temperature is 28°C (82.4°F). 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.

How many hours of daylight does Castries City have in August?

The average length of the day in August in Castries City, Saint Lucia, is 12.6h.

What are the months with the most sunshine in Castries City?

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

How long on average sun shines in August in Castries City?

In Castries City, the average sunshine in August is 8h.

When is the highest UV index in Castries City?

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

What is the UV index reading in August in Castries City?

In August, the average daily maximum UV index in Castries City, Saint Lucia, is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Castries City, Saint Lucia
  • Average high temperature in August: 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, February, March and December (28°C).

  • Average low temperature in August: 24°C

Months with the highest average low temperature are May, June, July, August and September (24°C).
Coldest months (with the lowest average low temperature) are January, February, March and December (22°C).

Average rainfall in August - Castries City, Saint Lucia
  • Average rainfall in August: 263mm

The wettest month (with the highest rainfall) is October (303mm).
The driest month (with the lowest rainfall) is March (99mm).

Average rainfall days in August - Castries City, Saint Lucia
  • Average rainfall days in August: 20 days

The month with the highest number of rainy days is September (24 days).
The month with the lowest number of rainy days is April (11 days).

Average sea temperature in August - Castries City, Saint Lucia
  • Average sea temperature in August: 28°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 August / Average sunshine in August - Castries City, Saint Lucia
  • Average daylight in August: 12.6h

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

  • Average sunshine in August: 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 August - Castries City, Saint Lucia
  • Average UV index in August: 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).