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Best time to visit Castries, Caribbean, Saint Lucia

Our verdict

The best time to visit Castries is May-June

Are you looking for the best time to visit Castries? Well, you’re in the right place! Although Castries is a great destination to visit almost all year round, May-June is the best time to go due to its perfect climate conditions. Around this time of year, flights and accommodation can also be cheaper as it is outside of key peak holiday seasons if you book well enough in advance.

In summer, temperatures can reach as high as 31℃ (88℉) in the middle of the day. In the winter, temperatures can get down to 24℃ (75℉) around February.

If you’re a sun-chaser and want to visit Castries when the days are longest, you should visit in August. You don’t want to get wet on your holiday, do you? Well if you’re trying to avoid the rain, then steer clear of Castries in August. Head over there in February instead if you want to increase your chances of not being rained on.

Keep reading to learn more about the best times to go to Castries, including detailed weather information and tools to help you find and book great deals on your travel.

Warmest month

September

Least rainfall

February

Most daylight

August

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Where to?
Castries

Castries seasons

Before you continue, it’s important to know when the seasons are in Castries as they might be different to yours depending on where in the world you’re travelling from. Castries is in the Northern Hemisphere, so the seasons fall during these months:

Season Months
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Castries

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Castries for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Castries climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Castries for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Castries in January

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 73%
  • Average sunny days: 8 days
  • Average rainfall: 26mm (1") over 19 days
8 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Castries in January, make sure you pack t-shirts and light clothing.


Castries in February

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 27℃ (81℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 73%
  • Average sunny days: 7 days
  • Average rainfall: 19mm (1") over 16 days
7 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Castries in February, make sure you pack t-shirts and light clothing.


Castries in March

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 25℃ (77℉)
  • Average humidity: 73%
  • Average sunny days: 7 days
  • Average rainfall: 21mm (1") over 19 days
7 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Castries in March, make sure you pack t-shirts and light clothing.


Castries in April

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 28℃ (83℉)
  • Average low temperature: 26℃ (78℉)
  • Average humidity: 74%
  • Average sunny days: 5 days
  • Average rainfall: 28mm (1") over 20 days
5 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Castries in April, make sure you pack t-shirts and light clothing.


Castries in May

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 29℃ (84℉)
  • Average low temperature: 26℃ (79℉)
  • Average humidity: 74%
  • Average sunny days: 3 days
  • Average rainfall: 36mm (1") over 23 days
3 days
of pure sunshine
23 days
of showers or rain

What to pack: If you’re heading to Castries in May, make sure you pack t-shirts and light clothing.


Castries in June

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 29℃ (85℉)
  • Average low temperature: 27℃ (80℉)
  • Average humidity: 74%
  • Average sunny days: 2 days
  • Average rainfall: 41mm (2") over 23 days
2 days
of pure sunshine
23 days
of showers or rain

What to pack: If you’re heading to Castries in June, make sure you pack t-shirts and light clothing.


Castries in July

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 29℃ (85℉)
  • Average low temperature: 27℃ (80℉)
  • Average humidity: 75%
  • Average sunny days: 1 days
  • Average rainfall: 60mm (2") over 26 days
1 days
of pure sunshine
26 days
of showers or rain

What to pack: If you’re heading to Castries in July, make sure you pack t-shirts and light clothing.


Castries in August

  • Average temperature: 28℃ (83℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 27℃ (81℉)
  • Average humidity: 75%
  • Average sunny days: 1 days
  • Average rainfall: 72mm (3") over 25 days
1 days
of pure sunshine
25 days
of showers or rain

What to pack: If you’re heading to Castries in August, make sure you pack t-shirts and light clothing.


Castries in September

  • Average temperature: 29℃ (83℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 27℃ (81℉)
  • Average humidity: 73%
  • Average sunny days: 5 days
  • Average rainfall: 63mm (2") over 20 days
5 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Castries in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.

Castries in October

  • Average temperature: 28℃ (83℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 27℃ (81℉)
  • Average humidity: 74%
  • Average sunny days: 5 days
  • Average rainfall: 69mm (3") over 21 days
5 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Castries in October, make sure you pack t-shirts and light clothing.


Castries in November

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 29℃ (85℉)
  • Average low temperature: 27℃ (80℉)
  • Average humidity: 75%
  • Average sunny days: 4 days
  • Average rainfall: 64mm (3") over 21 days
4 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Castries in November, make sure you pack t-shirts and light clothing.


Castries in December

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 28℃ (83℉)
  • Average low temperature: 26℃ (78℉)
  • Average humidity: 74%
  • Average sunny days: 7 days
  • Average rainfall: 35mm (1") over 19 days
7 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Castries in December, make sure you pack t-shirts and light clothing.


Top FAQs

The hottest month of the year in Castries is usually September, where temperatures tend to rise to around 30℃ (86℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Castries is generally around February. The dry season often coincides with cooler weather, so you should check the temperatures in February first to make sure it’s still a good time to go.
The rainiest time of year in Castries is generally around August, although the wetter season can sometimes extend a few months either side of August too.
If you want to get the most out of your time visiting Castries, or if you're just afraid of the dark, the days in August are usually the longest between sunrise and sunset.

Castries map

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