Monthly weather forecast and climate
Castries City, Saint Lucia

The beautiful city of Castries, Saint Lucia
The beautiful city of Castries, Saint Lucia

Weather in January

January, the same as December, is another warm winter month in Castries City, Saint Lucia, with average temperature varying between 28°C (82.4°F) and 22°C (71.6°F). The coldest months are January through March and December, with an average high-temperature of 28°C (82.4°F). Weather in January »

Weather in February

The last month of the winter, February, is also a moderately hot month in Castries City, Saint Lucia, with temperature in the range of an average high of 28°C (82.4°F) and an average low of 22°C (71.6°F). January through March and December, with an average high-temperature of 28°C (82.4°F), are the coldest months. In Castries City, it is raining for 13 days, with typically 104mm (4.09") of accumulated precipitation. Weather in February »

Weather in March

The first month of the spring, March, is also a moderately hot month in Castries City, Saint Lucia, with average temperature ranging between max 28°C (82.4°F) and min 22°C (71.6°F). The coldest months are January through March and December, with an average high-temperature of 28°C (82.4°F). The month with the least rainfall in Castries City, Saint Lucia, is March when the rain falls for 13 days and typically collects 99mm (3.9") of precipitation. Weather in March »

Weather in April

April, the same as March, is a moderately hot spring month in Castries City, Saint Lucia, with average temperature fluctuating between 29°C (84.2°F) and 23°C (73.4°F). In April, the average high-temperature is almost the same as in March - a still warm 29°C (84.2°F). Weather in April »

Weather in May

May, the last month of the spring, in Castries City, is a hot month, with average temperature ranging between max 30°C (86°F) and min 24°C (75.2°F). May through October, with an average high-temperature of 30°C (86°F), are the warmest months. In Castries City, it is raining for 15 days, with typically 145mm (5.71") of accumulated precipitation. Weather in May »

Weather in June

The first month of the summer, June, is still a hot month in Castries City, Saint Lucia, with temperature in the range of an average high of 30°C (86°F) and an average low of 24°C (75.2°F). May through October, with an average high-temperature of 30°C (86°F), are the warmest months. In June, the rain falls for 19 days. Weather in June »

Weather in July

July, the same as June, in Castries City, Saint Lucia, is another tropical summer month, with average temperature varying between 30°C (86°F) and 24°C (75.2°F). May through October, with an average high-temperature of 30°C (86°F), are the warmest months. Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Castries City, Saint Lucia, with average temperature fluctuating between 24°C (75.2°F) and 30°C (86°F). The warmest months are May through October, with an average high-temperature of 30°C (86°F). Weather in August »

Weather in September

September, the first month of the autumn, in Castries City, is still a tropical month, with average temperature fluctuating between 24°C (75.2°F) and 30°C (86°F). May through October, with an average high-temperature of 30°C (86°F), are the warmest months. In Castries City, during 24 rainfall days, 259mm (10.2") of precipitation is typically accumulated. Weather in September »

Weather in October

October, like September, is another tropical autumn month in Castries City, Saint Lucia, with temperature in the range of an average high of 30°C (86°F) and an average low of 23°C (73.4°F). May through October, with an average high-temperature of 30°C (86°F), are the warmest months. The month with the most rainfall is October when the rain falls for 18 days and typically aggregates up to 303mm (11.93") of precipitation. Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in Castries City, Saint Lucia, 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). In Castries City, the average high-temperature in November is essentially the same as in October - a warm 29°C (84.2°F). Weather in November »

Weather in December

December, the first month of the winter, in Castries City, is still a warm month, with temperature in the range of an average low of 22°C (71.6°F) and an average high of 28°C (82.4°F). January through March and December, with an average high-temperature of 28°C (82.4°F), are the coldest months. Weather in December »
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FAQ

What is the coldest month in Castries City?

The coldest months are January through March and December, with an average high-temperature of 28°C (82.4°F).

How much does it rain in Castries City?

Throughout the year, there are 208 rainfall days, and 2377mm (93.58") of precipitation is accumulated.

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.

What are the months with the coldest sea water in Castries City?

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Castries City, Saint Lucia.

What is the driest month in Castries City?

March is the month with the least rainfall in Castries City, Saint Lucia. Rain falls for 13 days and accumulates 99mm (3.9") of precipitation.

What is the month with 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 in Castries City, Saint Lucia.

What is the warmest month in Castries City?

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

When are the longest days in Castries City?

June and July, with an average of 12.9h of daylight, are months with the longest days in Castries City, Saint Lucia.

What months are the sea warmest in Castries City?

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

What is the wettest month in Castries City?

The month with the most rainfall in Castries City is October when the rain falls for 18 days and typically aggregates up to 303mm (11.93") of precipitation.

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

With an average of 7h of sunshine, October has the least sunshine of the year in Castries City, Saint Lucia.

What is the month with the shortest days in Castries City?

The month with the shortest days is December, with an average of 11.3h of daylight.

When is the lowest UV index in Castries City?

The month with the lowest UV index in Castries City is December, with an average maximum UV index of 8.

Average temperature
Castries City, Saint Lucia

Average temperature - Castries City, Saint Lucia

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, February, March and December (28°C).

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

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Average rainfall
Castries City, Saint Lucia

Average rainfall - Castries City, Saint Lucia

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

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Average rainfall days
Castries City, Saint Lucia

Average rainfall days - Castries City, Saint Lucia

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

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Average sea temperature
Castries City, Saint Lucia

Average sea temperature - Castries City, Saint Lucia

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 / Average sunshine
Castries City, Saint Lucia

Average daylight / Average sunshine - Castries City, Saint Lucia

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

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
Castries City, Saint Lucia

Average UV index - Castries City, Saint Lucia

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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