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St. Lucia

St. Lucia Climate and Average Weather

St. Lucia Climate Chart
MonthMean Temperature oFAvg. Rainfall (mm) Avg. Rain Days
Jan 73.9 83.8 70.8 18
Feb73.8 83.8 51.1 15
Mar 74.3 84.7 58.3 14
Apr75.9 85.8 59.1 12
May 77.4 87.1 71.1 14
June77.7 87.1 99.2 16
July 77.5 86.9 150.1 21
Aug77.4 87.4 157.8 21
Sept 77.0 87.6 196.9 20
Oct76.8 87.4 198.5 20
Nov 75.9 86.2 176.7 20
Dec75.0 84.9 109.0 17
Source: World Meteorological Organization

St. Lucia’s average weather is luxurious most of the year, but anyone planning a vacation there will find that some months are better than others.

The island is in the middle of the pack in popularity among Caribbean destinations. It attracts similar numbers of both cruise visitors and long-term vacationers (a week or more) because of its beautiful green hills and white sand beaches.

St. Lucia climate is typical for eastern Caribbean weather. It has monthly high temperatures average in the mid-80s Fahrenheit with only a few degrees of variation throughout the year. The average low temperatures hover around the mid-70s.

Daytime temperatures on average reach 87 degrees Fahrenheit or about 31 degrees Celsius from May through October.

They hit a low point of 84 degrees Fahrenheit or 29 degrees Celsius in January and February. St. Lucia’s winter temperatures make it one of the warmer Caribbean islands during the winter.

St. Lucia Rainfall

But it's the rainfall that determines the popularity of each month with visitors.

The island receives about 50 inches of rain each year, with the lowest months being in the spring.

St. Lucia weather in February through May is part of a regular dry season when rainfall averages about two to three inches a month. It makes this time of the year popular with cruise visitors wanting to escape the cold northern winters.

The island has a rainy season from June until December.

St. Lucia weather in September and October hits a low point during the worst part of the annual hurricane season. Rainfall averages about eight inches each month historically, the World Weather Organization says.

July, August and November average six inches of rain or more.

The number of "rain days" each month varies as well from a low of 12 in April to a high of at least 20 days from July through November.

As a result of the rain, St. Lucia usually sees the largest number of vacationers from December through May, a moderate number in the summer and a sharp decrease in September and October.

Anyone planning to travel to the island will increase their chances of good weather by going in the first half of the year. They should avoid early fall if at all possible.

 > Category: Climate

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