Marigot Bay

Saint Lucia Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Saint Lucia in August.

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Gros Islet Soufrière Castries Vieux Fort

Planning a getaway to Saint Lucia this August and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Saint Lucia in August

August in Saint Lucia generally has very warm temperatures, with high precipitation.

Temperatures

You can expect very warm maximum daytime temperatures of around 30°C (86°F) and nighttime temperatures around 26°C (79°F) in Gros Islet. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

To explore the conditions in Saint Lucia in more detail, check the map below.

Precipitation

In August, precipitation varies across different areas. From high rainfall in Castries with an average of 114 mm (4.5 in) to high rainfall in Mon Repos with 142 mm (5.6 in).

Average sunshine

August brings good sunshine to many areas. Gros Islet sees around 248 hours of sunlight, great for visitors looking for bright days.

Explore Saint Lucia by month

Pick a month to see the average temperature, rainfall and sunshine in Saint Lucia — and find the best time to visit. (based on Gros Islet)

January28°C (82°F) February28°C (82°F) March29°C (84°F) April29°C (84°F) May30°C (86°F) June30°C (86°F) This monthJuly30°C (86°F) August30°C (86°F) September31°C (88°F) October30°C (86°F) November30°C (86°F) December29°C (84°F)
Best Time to Visit Saint Lucia →

Best Places to Visit in Saint Lucia in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Saint Lucia.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Saint Lucia

What is the weather like in August for some of the most popular destinations in Saint Lucia?

Temperature range in Saint Lucia (August)

Precipitation variation in Saint Lucia (August)

Gros Islet

In August Gros Islet generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
31°C (88°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
248 hours
248 hours
238 hours
Monthly rainfall
113 mm (4.4 in)
131 mm (5.2 in)
138 mm (5.4 in)
Monthly rainy days
21 days
20 days
24 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Gros Islet →

Soufrière

In August Soufrière generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
31°C (88°F)
31°C (88°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
248 hours
248 hours
238 hours
Monthly rainfall
102 mm (4 in)
121 mm (4.8 in)
128 mm (5 in)
Monthly rainy days
21 days
20 days
24 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Soufrière →

Castries

In August Castries generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
31°C (88°F)
Min temperature
25°C (77°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
248 hours
248 hours
238 hours
Monthly rainfall
98 mm (3.9 in)
114 mm (4.5 in)
122 mm (4.8 in)
Monthly rainy days
21 days
20 days
24 days
Weather conditions
pleasant
tolerable
tolerable
Climate in Castries →

Cap Estate

In August Cap Estate generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
248 hours
248 hours
238 hours
Monthly rainfall
114 mm (4.5 in)
132 mm (5.2 in)
140 mm (5.5 in)
Monthly rainy days
21 days
20 days
25 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Cap Estate →

Vieux Fort

In August Vieux Fort generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
26°C (79°F)
26°C (79°F)
26°C (79°F)
Monthly sun hours
248 hours
248 hours
238 hours
Monthly rainfall
117 mm (4.6 in)
138 mm (5.4 in)
143 mm (5.6 in)
Monthly rainy days
21 days
20 days
23 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Vieux Fort →

Is your destination not in the list? Have a look at all destinations in Saint Lucia.

Popular cities in August

Day & night temperatures, rainfall and average weather in Saint Lucia in August.

City Weather Day temp Night temp Rainfall
Gros Islet 30°C (86°F) 26°C (79°F) 131 mm (5.2 in)
Soufrière 31°C (88°F) 26°C (79°F) 121 mm (4.8 in)
Castries 31°C (88°F) 26°C (79°F) 114 mm (4.5 in)
Vieux Fort 30°C (86°F) 26°C (79°F) 138 mm (5.4 in)
Marigot Bay 31°C (88°F) 26°C (79°F) 117 mm (4.6 in)
Marisule Estate 31°C (88°F) 26°C (79°F) 125 mm (4.9 in)

Saint Lucia weather in August: frequently asked questions

What is the weather like in Saint Lucia in August?

Expect unpleasant weather across Saint Lucia in August. The popular destination of Gros Islet averages 30°C (86°F) by day and 26°C (79°F) at night during this month.

What is the average temperature in Saint Lucia in August?

Daytime temperatures in Gros Islet peak at roughly 30°C (86°F) in August, dropping to about 26°C (79°F) overnight.

Does Saint Lucia get a lot of rain in August?

Gros Islet typically receives notable rainfall in August, about 131 mm (5.2 in) on average across Saint Lucia.

Is August a Good Time to Visit Saint Lucia?

In our opinion, August may not be the ideal time to visit Saint Lucia due to the typically tolerable weather in Gros Islet.

On average, the best time to visit Saint Lucia is in January, February, March, April and December with generally perfect weather in Gros Islet. On the other hand, the months of July, August, September, October and November tend to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in Saint Lucia.

Weather and climate has detailed information for every country in the world. Are you going to Saint Lucia? Get detailed historical weather averages for many cities in Saint Lucia.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.