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Water Temperature in the South China Sea in Sanya, China: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Sanya in China, 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 Sanya
23.5°C
TODAY
22.6°C
YESTERDAY
23.5°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the South China Sea in Sanya is 23.5°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 South China Sea in Sanya Over the Last 30 Days
The water temperature in Sanya 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 Sanya will remain nearly unchanged in the coming days, its value will be 24.3°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 China to enhance accuracy.
Water temperature data for Sanya 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 |
|---|---|---|---|
| Mar 20 | 23.5°C | 24.0°C | |
| Mar 21 | 24.4°C | 24.0°C | |
| Mar 22 | 23.6°C | 24.3°C | |
| Mar 23 | 23.5°C | 23.5°C | |
| Mar 24 | 22.0°C | 23.8°C | |
| Mar 25 | 23.0°C | 23.8°C | |
| Mar 26 | 22.6°C | 23.8°C | |
| Mar 27 | 22.8°C | 24.3°C | |
| Mar 28 | 24.3°C | 23.6°C | |
| Mar 29 | 24.0°C | 23.6°C | |
| Mar 31 | 25.0°C | 23.7°C | |
| Apr 1 | 25.0°C | 23.8°C | |
| Apr 2 | 25.3°C | 24.0°C | |
| Apr 3 | 25.0°C | 24.1°C | |
| Apr 4 | 25.3°C | 24.2°C | |
| Apr 5 | 25.0°C | 24.3°C |
Sea Temperature in Sanya Throughout the Year
Throughout the year, the sea temperature in Sanya is always above 64°F (18°C), the sea temperature exceeds 72°F (22°C) for 364 days, and exceeds 77°F (25°C) for 257 days.
Below is the annual chart of sea temperature changes in the South China Sea in Sanya.
January
| Minimum | Average | Maximum |
|---|---|---|
| 20°C | 23°C | 26°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 21°C | 23°C | 25°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 21°C | 24°C | 27°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 22°C | 25.5°C | 29°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 25°C | 27.5°C | 30°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 27°C | 29°C | 31°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 27°C | 29°C | 31°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 27°C | 29°C | 31°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 26°C | 29°C | 32°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 25°C | 28°C | 31°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 25°C | 27°C | 29°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 21°C | 24.5°C | 28°C |
Monthly Water Temperature Histogram for South China Sea in Sanya
You can explore detailed data on how the water temperature in Sanya varies each month:
What Beaches Are There In and Around Sanya?
Dadong Sea Beach
Dadong Sea Beach is a 5-stars sandy beach, located in a 3 km (2 miles) radius of Sanya. There are lifeguards on the beach. 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.
Dadonghai Beach
Dadonghai Beach is a 3-stars sandy beach, located in a 3 km (2 miles) radius of Sanya. 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.
Da Dong Hai Beach
Da Dong Hai Beach is a 5-stars sandy beach, located in a 3 km (2 miles) radius of Sanya. There are lifeguards on the beach. For those who prefer clothing-optional beaches, Da Dong Hai Beach is a designated nudist beach. 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.
Anantara Sanya Resort & Spa
Anantara Sanya Resort & Spa is a 5-stars sandy beach, located in a 4 km (2 miles) radius of Sanya. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Sanya Weather
MARCH 29
23°C / 26°C
overcast clouds: 85-100%humidity: 84% | wind: 5 km/h
MARCH 30
22°C / 27°C
overcast clouds: 85-100%humidity: 81% | wind: 5 km/h
MARCH 31
22°C / 26°C
overcast clouds: 85-100%humidity: 74% | wind: 5 km/h
Sea Temperature in the South China Sea in Sanya: General Trends and Swimming Opportunities
The coastal region of Hainan, China experiences a tropical monsoon climate, characterized by high temperatures throughout the year, with an annual average of 23-25°C, and heavy rainfall, particularly during the monsoon season from May to October. The region remains relatively warm even in winter, making it a popular winter getaway.
Sanya is located in Asia in the Northern Hemisphere at a latitude of 18 degrees, along the shores of the South China Sea. Sanya lies within the Hainan in China.
The average annual daytime air temperature in Sanya is 28°C (82°F), with the average nighttime temperature being 23°C (73°F). The highest average daily temperature occurs in July, reaching 32°C (89°F), while the lowest is in January at 22°C (71°F). As for nighttime temperatures, the minimum average temperature of 18°C (64°F) is recorded in January, and the maximum is in June, reaching 26°C (79°F).
According to historical data, Sanya experiences 126 rainy days per year, which accounts for 35 percent of all days in the year. On average, there are 10 rainy days each month. The wettest month is August, with 18 rainy days and 200 mm (7.9 inches) of precipitation, while the driest month is January, which typically has 4 rainy days and only 22 mm (0.9 inches) of precipitation.
The average annual water temperature in South China Sea in Sanya is 27°C (81°F). In January, the water reaches its lowest point of the year at 20°C (68°F), while in September, it peaks at 32°C (90°F). The months suitable for comfortable beach vacations and swimming in the South China Sea are February, March, April, May, June, July, August, September, October, November, and December. During this period, the water temperature stays above 20°C (68°F) and can reach up to 32°C (90°F) on some days.
Geographical Location of Sanya
Nearby Cities
Frequently Asked Questions About Sanya and its Water Temperatures
What is the current sea temperature in Sanya?
The water temperature today in the South China Sea in Sanya is 74°F (23.5°C).
In which months is the water temperature in Sanya comfortable for swimming?
The water temperature in the South China Sea in Sanya is comfortable for swimming and beach vacations in February, March, April, May, June, July, August, September, October, November, and December.
What is the water temperature in Sanya during the winter?
The water temperature in the South China Sea in Sanya during the winter ranges from 20°C to 28°C (68°F to 82°F).
What is the water temperature in Sanya during the spring?
The water temperature in the South China Sea in Sanya during the spring ranges from 21°C to 30°C (70°F to 86°F).
What is the water temperature in Sanya during the summer?
The water temperature in the South China Sea in Sanya during the summer ranges from 27°C to 31°C (81°F to 88°F).
What is the water temperature in Sanya during the fall?
The water temperature in the South China Sea in Sanya during the fall ranges from 25°C to 32°C (77°F to 90°F).
Is it possible to swim in the sea in Sanya year-round?
No, it is not possible to swim in the South China Sea in Sanya year-round, the months suitable for comfortable swimming are February, March, April, May, June, July, August, September, October, November, and December.
Is Sanya a popular tourist destination for beach vacations?
Sanya a fairly popular beach destination, offering good conditions for swimming and relaxation, with a steady flow of tourists, especially during peak seasons.
What sea temperatures can I expect in Sanya in the next month?
In April, the water temperature in the South China Sea in Sanya will range between 72°F (22°C) and 84°F (29°C)