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Saint Lucia Weather in December

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

Considering a trip to Saint Lucia this December and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Saint Lucia in December

December in Saint Lucia generally has warm temperatures, with moderate precipitation.

Temperatures

You can expect warm maximum daytime temperatures of around 29°C (84°F) and nighttime temperatures around 25°C (77°F) in Gros Islet.

To learn more about the conditions in specific areas of Saint Lucia, check out the map below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Soufrière with an average of 53 mm (2.1 in) to moderate rainfall in Mon Repos with 66 mm (2.6 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Gros Islet enjoys about 247 hours of sunlight, ideal for those seeking sunny weather.

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)

Best Places to Visit in Saint Lucia in December

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

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 December for some of the most popular destinations in Saint Lucia?

Temperature range in Saint Lucia (December)

Precipitation variation in Saint Lucia (December)

Gros Islet

In December Gros Islet generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
30°C (86°F)
29°C (84°F)
28°C (82°F)
Min temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
241 hours
247 hours
245 hours
Monthly rainfall
133 mm (5.2 in)
63 mm (2.5 in)
51 mm (2 in)
Monthly rainy days
19 days
18 days
17 days
Weather conditions

Soufrière

In December Soufrière generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
30°C (86°F)
29°C (84°F)
29°C (84°F)
Min temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
241 hours
247 hours
245 hours
Monthly rainfall
119 mm (4.7 in)
53 mm (2.1 in)
43 mm (1.7 in)
Monthly rainy days
19 days
18 days
17 days
Weather conditions

Castries

In December Castries generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

November
December
January
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
241 hours
247 hours
245 hours
Monthly rainfall
117 mm (4.6 in)
56 mm (2.2 in)
45 mm (1.8 in)
Monthly rainy days
19 days
18 days
17 days
Weather conditions

Cap Estate

In December Cap Estate generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
29°C (84°F)
29°C (84°F)
28°C (82°F)
Min temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
241 hours
247 hours
245 hours
Monthly rainfall
134 mm (5.3 in)
63 mm (2.5 in)
51 mm (2 in)
Monthly rainy days
19 days
18 days
17 days
Weather conditions

Vieux Fort

In December Vieux Fort generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
29°C (84°F)
29°C (84°F)
28°C (82°F)
Min temperature
26°C (79°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
241 hours
247 hours
245 hours
Monthly rainfall
134 mm (5.3 in)
61 mm (2.4 in)
49 mm (1.9 in)
Monthly rainy days
19 days
18 days
17 days
Weather conditions

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

Popular cities in December

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

City Weather Day temp Night temp Rainfall
Gros Islet 29°C (84°F) 25°C (77°F) 63 mm (2.5 in)
Soufrière 29°C (84°F) 25°C (77°F) 53 mm (2.1 in)
Castries 30°C (86°F) 25°C (77°F) 56 mm (2.2 in)
Vieux Fort 29°C (84°F) 25°C (77°F) 61 mm (2.4 in)
Marigot Bay 30°C (86°F) 25°C (77°F) 55 mm (2.2 in)
Marisule Estate 29°C (84°F) 25°C (77°F) 60 mm (2.4 in)

Saint Lucia weather in December: frequently asked questions

What is the weather like in Saint Lucia in December?

In December, Saint Lucia generally has perfect weather conditions. Gros Islet sees daytime temperatures near 29°C (84°F), with nights cooling to roughly 25°C (77°F).

What is the average temperature in Saint Lucia in December?

Daytime temperatures in Gros Islet peak at roughly 29°C (84°F) in December, dropping to about 25°C (77°F) overnight.

Does Saint Lucia get a lot of rain in December?

December is on the drier side in Saint Lucia. Gros Islet averages only about 63 mm (2.5 in), with most days staying dry.

Is December a Good Time to Visit Saint Lucia?

We consider December to be one of the best times to travel to Saint Lucia. Typically, the climate in Gros Islet is perfect. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, January, February, March, April and December provide 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.