The best times to visit St Lucia for ideal weather are

February 26th to April 1st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other St Lucia Travel Info

Weather in St Lucia

Temperature

Average temperatures in St Lucia vary barely at all. Considering humidity, temperatures feel hot all year with a chance of rain throughout most of the year. The area is far less temperate than some — in the bottom 1 percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit St Lucia, the hottest months are September, October, and then June. See average monthly temperatures below. The warmest time of year is generally early September where highs are regularly around 89.5°F (31.9°C) with temperatures rarely dropping below 77.2°F (25.1°C) at night.

St Lucia Temperatures (Fahrenheit)

Key
High
Average
Low

St Lucia Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

St Lucia Perceived Temperature (F)

Key
High
Average
Low

St Lucia Perceived Temperature (C)

Key
High
Average
Low

 

Average St Lucia Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 84.8 79.8 74
Feb 84.9 79.7 73.8
Mar 85.6 80.1 74
Apr 86.4 81 75.1
May 87.8 82.7 76.9
Jun 88 83.2 77.5
Jul 88.1 83.1 77.3
Aug 88.4 83.2 76.9
Sep 89.1 83.6 76.6
Oct 88.8 83.2 76.5
Nov 87.4 82.1 76
Dec 85.7 80.7 74.8

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 29.3 26.6 23.3
Feb 29.4 26.5 23.2
Mar 29.8 26.7 23.3
Apr 30.2 27.2 23.9
May 31 28.2 24.9
Jun 31.1 28.4 25.3
Jul 31.2 28.4 25.2
Aug 31.3 28.4 24.9
Sep 31.7 28.7 24.8
Oct 31.6 28.4 24.7
Nov 30.8 27.8 24.4
Dec 29.8 27.1 23.8

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in St Lucia are March, February, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early March. For example, on the week of March 5th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late October to early November with an average of 4 days of significant precipitation the week of October 29th.

When can you find snow in St Lucia? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in St Lucia.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in St Lucia (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 35% 0 4
Feb 22% 0 2.3
Mar 21% 0 2.4
Apr 29% 0 5.6
May 26% 0 4.4
Jun 35% 0 5.3
Jul 40% 0 7
Aug 47% 0 7.8
Sep 37% 0 6.5
Oct 45% 0 7.2
Nov 41% 0 7.9
Dec 32% 0 4.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 35 0 10.2
Feb 22 0 5.8
Mar 21 0 6.1
Apr 29 0 14.2
May 26 0 11.2
Jun 35 0 13.5
Jul 40 0 17.8
Aug 47 0 19.8
Sep 37 0 16.5
Oct 45 0 18.3
Nov 41 0 20.1
Dec 32 0 11.9

 

Humidity and Wind

St Lucia has some very humid months, and above average humidity throughout the year. The least humid month is March (66.1% relative humidity), and the most humid month is August (73.9%).

Wind in St Lucia is usually stronger than many places. The windiest month is February, followed by June and January. February’s average wind speed of around 12.9 knots (14.8 MPH or 23.8 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid February where average top sustained speeds reach 17.9 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in St Lucia.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 12.4 Significant breeze 17.1 Strong breeze
Feb 12.9 Significant breeze 17.4 Strong breeze
Mar 11.8 Significant breeze 16.4 Strong breeze
Apr 11.7 Significant breeze 16 Significant breeze
May 11.6 Significant breeze 16.2 Strong breeze
Jun 12.5 Significant breeze 17.2 Strong breeze
Jul 11.9 Significant breeze 16.6 Strong breeze
Aug 9.7 Gentle breeze 14.8 Significant breeze
Sep 8.2 Gentle breeze 13.2 Strong breeze
Oct 8.9 Gentle breeze 14.1 Significant breeze
Nov 9.8 Gentle breeze 14.7 Strong breeze
Dec 10.8 Gentle breeze 15.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 68.5%
Feb 66.4%
Mar 66.1%
Apr 69.5%
May 69.6%
Jun 70.6%
Jul 72%
Aug 73.9%
Sep 72.9%
Oct 73.2%
Nov 73.5%
Dec 70.9%

 

Is it Safe to Travel to St Lucia?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Saint Lucia; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 27, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in St Lucia is January, followed by February and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit St Lucia in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 50.6 in October means 50.6% of the tourists vs. January.

 

 

Overall St Lucia Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel warm. Highs range from 88.4°F (31.3°C) and 85.1°F (29.5°C) with warmer temperatures in the later months. Rain is somewhat common with 7 to 9 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 10 to 14 days of precipitation per month. June – August is the second busiest season for tourism in St Lucia, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 89.5°F (31.9°C) and 86.3°F (30.2°C), which will feel very nice given the humidity and wind. It rains or snows a good amount: 11 to 14 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is perfect this time of year in St Lucia to be enjoyable for warm weather travelers. The average high during this season is between 86.3°F (30.2°C) and 84.4°F (29.1°C). On average, it rains or snows a fair amount: 6 to 11 times per month. These times of year are the busiest with tourists.

 

Best Times to Travel › St Lucia