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

April 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
April, like March, in Castries City, Saint Lucia, is a moderately hot spring month, with temperature in the range of an average high of 29°C (84.2°F) and an average low of 23°C (73.4°F).

Temperature

In Castries City, the average high-temperature in April is essentially the same as in March - a still warm 29°C (84.2°F). In April, in Castries City, the average low-temperature is 23°C (73.4°F).

Rainfall

In Castries City, Saint Lucia, during April, the rain falls for 11 days and regularly aggregates up to 113mm (4.4") of precipitation. 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 is 27°C (80.6°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.

Daylight

In Castries City, the average length of the day in April is 12.5h.

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 are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
In April, the average maximum UV index of 12 translate into the following recommendations:
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. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in April in Castries City?

The average high-temperature, in April, in Castries City, is 29°C (84.2°F), while the average low-temperature is 23°C (73.4°F).

How many days does it rain in April in Castries City?

In Castries City, Saint Lucia, during April, the rain falls for 11 days and regularly aggregates up to 113mm (4.4") of precipitation.

What is the water temperature in April in Castries City?

In April, the average sea temperature is 27°C (80.6°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 April?

The average length of the day in April in Castries City is 12.5h.

What is the month with the most sunshine in Castries City?

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 April in Castries City?

The average sunshine in April is 8h.

When is the highest UV index in Castries City?

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

What is the UV index intensity in April in Castries City?

In April, the average daily maximum UV index in Castries City, Saint Lucia, is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in April - Castries City, Saint Lucia
  • Average high temperature in April: 29°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 April: 23°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 April - Castries City, Saint Lucia
  • Average rainfall in April: 113mm

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

Average rainfall days in April - Castries City, Saint Lucia
  • Average rainfall days in April: 11 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 April - Castries City, Saint Lucia
  • Average sea temperature in April: 27°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 April / Average sunshine in April - Castries City, Saint Lucia
  • Average daylight in April: 12.5h

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