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Jamestown
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Water Temperature in the Atlantic Ocean in Jamestown, Saint Helena: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Jamestown in Saint Helena, 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 Jamestown
23.2°C
TODAY
22.8°C
YESTERDAY
23.6°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Atlantic Ocean in Jamestown is 23.2°C. This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health.
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 Atlantic Ocean in Jamestown Over the Last 30 Days
The water temperature in Jamestown 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 Jamestown will rise slightly in the coming days and reach 25.2°C.
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 Helena to enhance accuracy.
Water temperature data for Jamestown 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 15 | 23.6°C | 27.0°C | |
| Feb 16 | 22.6°C | 26.3°C | |
| Feb 17 | 23.6°C | 26.8°C | |
| Feb 18 | 23.5°C | 26.5°C | |
| Feb 19 | 22.9°C | 26.0°C | |
| Feb 20 | 23.4°C | 26.8°C | |
| Feb 21 | 22.8°C | 27.0°C | |
| Feb 22 | 23.5°C | 26.8°C | |
| Feb 23 | 26.3°C | 23.5°C | |
| Feb 24 | 27.0°C | 23.9°C | |
| Feb 25 | 25.8°C | 24.1°C | |
| Feb 26 | 27.0°C | 24.4°C | |
| Feb 27 | 27.0°C | 24.7°C | |
| Feb 28 | 27.5°C | 25.0°C | |
| Mar 1 | 26.0°C | 25.1°C | |
| Mar 2 | 26.0°C | 25.2°C |
Sea Temperature in Jamestown Throughout the Year
Throughout the year, the sea temperature in Jamestown is always above 64°F (18°C), the sea temperature exceeds 72°F (22°C) for 234 days, and exceeds 77°F (25°C) for 135 days.
Below is the annual chart of sea temperature changes in the Atlantic Ocean in Jamestown.
January
| Minimum | Average | Maximum |
|---|---|---|
| 21°C | 25.5°C | 30°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 23°C | 27°C | 31°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 23°C | 27°C | 31°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 23°C | 27°C | 31°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 22°C | 26°C | 30°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 20°C | 23.5°C | 27°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 19°C | 23°C | 27°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 18°C | 22.5°C | 27°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 18°C | 22.5°C | 27°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 18°C | 23°C | 28°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 18°C | 23.5°C | 29°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 20°C | 24.5°C | 29°C |
Monthly Water Temperature Histogram for Atlantic Ocean in Jamestown
You can explore detailed data on how the water temperature in Jamestown varies each month:
What Beaches Are There In and Around Jamestown?
Prosperous Bay Beach
Prosperous Bay Beach is a 1-stars sandy beach, located in a 7 km (4 miles) radius of Jamestown.
Sandy Bay Beach
Sandy Bay Beach is a 1-stars sandy beach, located in a 8 km (5 miles) radius of Jamestown.
Powells Valley Beach
Powells Valley Beach is a 1-stars sandy beach, located in a 9 km (6 miles) radius of Jamestown.
Thompsons Valley Beach
Thompsons Valley Beach is a 1-stars sandy beach, located in a 9 km (6 miles) radius of Jamestown.
Jamestown Weather
FEBRUARY 23
22°C / 23°C
clear skyhumidity: 74% | wind: 6 km/h
FEBRUARY 24
23°C / 23°C
overcast clouds: 85-100%humidity: 75% | wind: 6 km/h
FEBRUARY 25
22°C / 23°C
few clouds: 11-25%humidity: 75% | wind: 6 km/h
FEBRUARY 26
22°C / 23°C
clear skyhumidity: 72% | wind: 7 km/h
Sea Temperature in the Atlantic Ocean in Jamestown: General Trends and Swimming Opportunities
Saint Helena, located in the southern Atlantic Ocean, possesses a tropical marine climate. The coastal areas enjoy mild temperatures ranging from 20-27 degrees Celsius (68-81 degrees Fahrenheit) year-round, accompanied by regular rainfall and ocean breezes.
Jamestown is located in South America in the Southern Hemisphere at a latitude of -16 degrees, along the shores of the Atlantic Ocean. Jamestown lies within in Saint Helena.
The average annual daytime air temperature in Jamestown is 25°C (77°F), with the average nighttime temperature being 13°C (55°F). The highest average daily temperature occurs in January, reaching 26°C (79°F), while the lowest is in September at 22°C (72°F). As for nighttime temperatures, the minimum average temperature of 10°C (49°F) is recorded in August, and the maximum is in February, reaching 17°C (62°F).
According to historical data, Jamestown experiences 20 rainy days per year, which accounts for 5 percent of all days in the year. On average, there are 2 rainy days each month. The wettest month is February, with 5 rainy days and 11 mm (0.4 inches) of precipitation, while the driest month is August, which typically has 0 rainy days and only 0 mm (0.0 inches) of precipitation.
The average annual water temperature in Atlantic Ocean in Jamestown is 25°C (77°F). In August, the water reaches its lowest point of the year at 18°C (64°F), while in February, it peaks at 31°C (88°F). The months suitable for comfortable beach vacations and swimming in the Atlantic Ocean are January, February, March, April, and May. During this period, the water temperature stays above 20°C (68°F) and can reach up to 31°C (88°F) on some days.
Geographical Location of Jamestown
Frequently Asked Questions About Jamestown and its Water Temperatures
What is the current sea temperature in Jamestown?
The water temperature today in the Atlantic Ocean in Jamestown is 74°F (23.2°C).
In which months is the water temperature in Jamestown comfortable for swimming?
The water temperature in the Atlantic Ocean in Jamestown is comfortable for swimming and beach vacations in January, February, March, April, and May.
What is the water temperature in Jamestown during the winter?
The water temperature in the Atlantic Ocean in Jamestown during the winter ranges from 20°C to 31°C (68°F to 88°F).
What is the water temperature in Jamestown during the spring?
The water temperature in the Atlantic Ocean in Jamestown during the spring ranges from 22°C to 31°C (72°F to 88°F).
What is the water temperature in Jamestown during the summer?
The water temperature in the Atlantic Ocean in Jamestown during the summer ranges from 18°C to 27°C (64°F to 81°F).
What is the water temperature in Jamestown during the fall?
The water temperature in the Atlantic Ocean in Jamestown during the fall ranges from 18°C to 29°C (64°F to 84°F).
Is it possible to swim in the sea in Jamestown year-round?
No, it is not possible to swim in the Atlantic Ocean in Jamestown year-round, the months suitable for comfortable swimming are January, February, March, April, and May.
What sea temperatures can I expect in Jamestown in the next month?
In March, the water temperature in the Atlantic Ocean in Jamestown will range between 73°F (23°C) and 88°F (31°C)