Search for cities, countries, lakes and rivers
Castries
Water Temperature in the Caribbean Sea in Castries, Saint Lucia: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Castries in Saint Lucia, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Castries
79°F
TODAY
79°F
YESTERDAY
78°F
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Caribbean Sea in Castries is 25.9°F. This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart for Caribbean Sea in Castries Over the Last 30 Days
The water temperature in Castries today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Castries will remain nearly unchanged in the coming days, its value will be 80°F.
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Saint Lucia to enhance accuracy.
Water temperature data for Castries and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
Date | Current | Average | Forecast |
---|---|---|---|
Feb 27 | 78°F | 79°F | |
Feb 28 | 78°F | 81°F | |
Mar 1 | 80°F | 81°F | |
Mar 2 | 80°F | 80°F | |
Mar 3 | 79°F | 79°F | |
Mar 4 | 79°F | 80°F | |
Mar 5 | 79°F | 80°F | |
Mar 6 | 79°F | 81°F | |
Mar 7 | 81°F | 79°F | |
Mar 8 | 82°F | 80°F | |
Mar 9 | 80°F | 80°F | |
Mar 10 | 82°F | 80°F | |
Mar 11 | 81°F | 80°F | |
Mar 12 | 79°F | 80°F | |
Mar 13 | 80°F | 80°F | |
Mar 14 | 80°F | 80°F |
Sea Temperature in Castries Throughout the Year
Throughout the year, the sea temperature in Castries is always above 64°F (18°C), the sea temperature exceeds 72°F (22°C) for 366 days, and exceeds 77°F (25°C) for 366 days.
Below is the annual chart of sea temperature changes in the Caribbean Sea in Castries.

January
Minimum | Average | Maximum |
---|---|---|
77°F | 81°F | 84°F |
February
Minimum | Average | Maximum |
---|---|---|
77°F | 80°F | 82°F |
March
Minimum | Average | Maximum |
---|---|---|
77°F | 81°F | 84°F |
April
Minimum | Average | Maximum |
---|---|---|
77°F | 81°F | 84°F |
May
Minimum | Average | Maximum |
---|---|---|
79°F | 82°F | 86°F |
June
Minimum | Average | Maximum |
---|---|---|
79°F | 82°F | 86°F |
July
Minimum | Average | Maximum |
---|---|---|
81°F | 83°F | 86°F |
August
Minimum | Average | Maximum |
---|---|---|
81°F | 83°F | 86°F |
September
Minimum | Average | Maximum |
---|---|---|
81°F | 84°F | 88°F |
October
Minimum | Average | Maximum |
---|---|---|
81°F | 84°F | 88°F |
November
Minimum | Average | Maximum |
---|---|---|
79°F | 83°F | 88°F |
December
Minimum | Average | Maximum |
---|---|---|
77°F | 81°F | 84°F |
Monthly Water Temperature Histogram for Caribbean Sea in Castries
You can explore detailed data on how the water temperature in Castries varies each month:
What Beaches Are There In and Around Castries?
Vigie Beach
Vigie Beach is a 4-stars sandy beach, is located directly in Castries. There is parking. There are cafés. Vigie Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Malabar Beach
Malabar Beach is a 5-stars sandy beach, located in a 2 km (1 miles) radius of Castries. There is parking. There are restrooms. There are cafés. Malabar Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
La Toc
La Toc is a 4-stars sandy beach, located in a 2 km (1 miles) radius of Castries. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Pointe Seraphine Beach
Pointe Seraphine Beach is a 2-stars sandy beach, located in a 2 km (1 miles) radius of Castries. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Choc Beach
Choc Beach is a 5-stars sandy beach, located in a 3 km (2 miles) radius of Castries. There is parking. There are restrooms. There are cafés. Choc Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Marisule Beach
Marisule Beach is a 2-stars sandy beach, located in a 4 km (2 miles) radius of Castries. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Choc Bay Beach
Choc Bay Beach is a 1-stars pebble beach, located in a 4 km (2 miles) radius of Castries. There is parking.
Beautiful Secret Beach
Beautiful Secret Beach is a 2-stars sandy beach, located in a 4 km (2 miles) radius of Castries. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Choc Bay
Choc Bay is a 3-stars sandy beach, located in a 4 km (2 miles) radius of Castries. There is parking. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Trouya Beach
Trouya Beach is a 2-stars pebble beach, located in a 6 km (4 miles) radius of Castries. There is parking. Snorkeling is possible. It is suitable for surfing.
Trouya Beach
Trouya Beach is a 3-stars sandy beach, located in a 6 km (4 miles) radius of Castries. There is parking. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Labrelotte Bay
Labrelotte Bay is a 4-stars sandy beach, located in a 6 km (4 miles) radius of Castries. There is parking. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Marigot Public Beach
Marigot Public Beach is a 5-stars sandy beach, located in a 6 km (4 miles) radius of Castries. It has been awarded the prestigious Blue Flag, ensuring high environmental and quality standards. There is parking. There are cafés. Marigot Public Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Kim & Kisi's Beach
Kim & Kisi's Beach is a 3-stars sandy beach, located in a 7 km (4 miles) radius of Castries. There is parking. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Reduit Beach
Reduit Beach is a 4-stars sandy beach, located in a 8 km (5 miles) radius of Castries. There is parking. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Roseau Bay Beach
Roseau Bay Beach is a 4-stars sandy beach, located in a 8 km (5 miles) radius of Castries. There is parking. There are cafés. Roseau Bay Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Pigeon Island Beach
Pigeon Island Beach is a 4-stars sandy beach, located in a 9 km (6 miles) radius of Castries. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Pigeon Island Beach #2
Pigeon Island Beach #2 is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Castries. There are restrooms. Snorkeling is possible.
Gros Islet Beach
Gros Islet Beach is a 3-stars sandy beach, located in a 9 km (6 miles) radius of Castries. There is parking. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Anse La Raye
Anse La Raye is a 4-stars sandy beach, located in a 10 km (6 miles) radius of Castries. There is parking. There are cafés. Anse La Raye is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Castries Weather
MARCH 7
77°F / 82°F
overcast clouds: 85-100%humidity: 71% | wind: 4 mph
MARCH 8
77°F / 81°F
clear skyhumidity: 71% | wind: 4 mph
MARCH 9
77°F / 81°F
clear skyhumidity: 72% | wind: 4 mph



Sea Temperature in the Caribbean Sea in Castries: General Trends and Swimming Opportunities
Saint Lucia, located on the eastern Caribbean Sea, boasts a tropical climate with high temperatures moderated by northeast trade winds. The coastal area typically experiences two seasons: a dry season from December to May, and a wet season from June to November with higher humidity and frequent rain showers.
Castries is located in Central America in the Northern Hemisphere at a latitude of 14 degrees, along the shores of the Caribbean Sea. Castries lies within in Saint Lucia.
The average annual daytime air temperature in Castries is 88°F (31°C), with the average nighttime temperature being 73°F (23°C). The highest average daily temperature occurs in September, reaching 89°F (32°C), while the lowest is in January at 84°F (29°C). As for nighttime temperatures, the minimum average temperature of 72°F (22°C) is recorded in February, and the maximum is in July, reaching 76°F (24°C).
According to historical data, Castries experiences 209 rainy days per year, which accounts for 57 percent of all days in the year. On average, there are 17 rainy days each month. The wettest month is July, with 21 rainy days and 8.1 inches (205 mm) of precipitation, while the driest month is March, which typically has 13 rainy days and only 3.1 inches (80 mm) of precipitation.
The average annual water temperature in Caribbean Sea in Castries is 82°F (28°C). In January, the water reaches its lowest point of the year at 77°F (25°C), while in September, it peaks at 88°F (31°C). The water temperature in the Caribbean Sea in Castries is comfortable for beach vacations and swimming year-round.
Geographical Location of Castries
Nearby Cities
Frequently Asked Questions About Castries and its Water Temperatures
What is the current sea temperature in Castries?
The water temperature today in the Caribbean Sea in Castries is 79°F (26.2°C).
In which months is the water temperature in Castries comfortable for swimming?
The water temperature in Castries is comfortable for beach vacations and swimming throughout the year.
What is the water temperature in Castries during the winter?
The water temperature in the Caribbean Sea in Castries during the winter ranges from 77°F to 84°F (25°C to 29°C).
What is the water temperature in Castries during the spring?
The water temperature in the Caribbean Sea in Castries during the spring ranges from 77°F to 86°F (25°C to 30°C).
What is the water temperature in Castries during the summer?
The water temperature in the Caribbean Sea in Castries during the summer ranges from 79°F to 86°F (26°C to 30°C).
What is the water temperature in Castries during the fall?
The water temperature in the Caribbean Sea in Castries during the fall ranges from 79°F to 88°F (26°C to 31°C).
Is it possible to swim in the sea in Castries year-round?
Yes, it is possible to swim in the Caribbean Sea in Castries year-round because the water temperature never drops below 77°F (25°C)
Is Castries a popular tourist destination for beach vacations?
Castries has a moderate level of popularity for beach vacations; while it does receive some visitors, it is not among the top seaside destinations, as other locations may offer more favorable conditions.
What sea temperatures can I expect in Castries in the next month?
In April, the water temperature in the Caribbean Sea in Castries will range between 77°F (25°C) and 84°F (29°C)