Water temperature in Charlestown (Saint Kitts and Nevis)

This data the coastal Charlestown sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Charlestown

Water temperature in Charlestown today is 29.9°C. Based on our historical data over a period of ten years, the warmest water in this day in Charlestown was recorded in 2023 and was 30.1°C, and the coldest was recorded in 2014 at 28.3°C. Sea water temperature in Charlestown is expected to drop to 29.3°C in the next 10 days. September average water temperature in Charlestown is 29.2°C, the minimum temperature is 27.6°C, and the maximum is 30.7°C.

The swimming season in Charlestown lasts from January to December, twelve months per year! During those months, Charlestown water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Charlestown in winter reaches 27°C, in spring 27.1°C, in summer the average temperature rises to 28.5°C, and in autumn it is 29°C.

Charlestown water temperature now

The sea salinity in Charlestown is 35.98‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Charlestown for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Charlestown. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Charlestown. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Charlestown

Charlestown weather forecast

Current temperature and weather

Data in a table show Charlestown temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Charlestown.

0-3 h	3-6 h	6-9 h	9-12 h
28.7°C	28.6°C	28.7°C	28.9°C

12-15 h	15-18 h	18-21 h	21-24 h
29.3°C	29.4°C	29.3°C	29.1°C

Charlestown water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Charlestown. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Charlestown on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Charlestown

The nearest beaches and cities from Charlestown with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Galley Bay	29.7°C	29°C		0.74 m
Dickenson Bay	29.7°C	29°C		0.8 m
Jolly Harbour	29.7°C	29°C		0.97 m
The Bottom	29.9°C	29°C		1.03 m
Falmouth	29.7°C	29°C		0.97 m
Gustavia	29.8°C	29°C		1.05 m
Baie de St-Jean	29.8°C	29°C		1.05 m
Chevreau island	29.8°C	30°C		1.02 m
English Harbour	29.7°C	29°C		1.23 m
Willikies	29.7°C	29°C		1.11 m

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Our report for Charlestown is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.