All data are in degrees Fahrenheit

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Water temperature in Haikou

Detailed information about the current water temperature in Haikou. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Haikou now

75.5

°F

March 22, 19:00

Trend:

increasing

Yesterday:

75.1°F

Tomorrow:

75.8°F

Sunrise:

06:42

Sunset:

18:50

Day Length:

12 h. 8 min.

Haikou in March

Minimum:

67.2°F

Average:

69.1°F

Maximum:

71.2°F

Sea water temperature in Haikou today

As of now, in Haikou, the water temperature is 75.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 75.9°F on 2021, while the historical minimum was 68.1°F on 2025.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 76.1°F, with minimum temperature starting at 75.8°F, while the maximum might reach 76.4°F.

Daily water temperature in Haikou

Date Current Year

actual* / forecast**

last year 10 years average
Mar 8 71.5°F 69.7°F 69.7°F
Mar 9 71.2°F 69.5°F 70.1°F
Mar 10 71.3°F 69.5°F 70.2°F
Mar 11 70.8°F 69.5°F 70.2°F
Mar 12 71.0°F 68.6°F 70.0°F
Mar 13 70.4°F 68.8°F 70.2°F
Mar 14 70.6°F 69.8°F 70.5°F
Mar 15 69.8°F 70.0°F 70.5°F
Mar 16 71.5°F 70.1°F 70.8°F
Mar 17 71.0°F 70.3°F 71.0°F
Mar 18 73.4°F 70.6°F 71.5°F
Mar 19 73.9°F 70.8°F 71.8°F
Mar 20 74.3°F 70.8°F 72.1°F
Mar 21 75.1°F 68.7°F 72.3°F
Mar 22 75.5°F 68.1°F 72.3°F
Mar 23 75.8°F 68.5°F 72.5°F
Mar 24 75.9°F 69.9°F 72.6°F
Mar 25 76.1°F 69.7°F 72.8°F
Mar 26 76.1°F 70.9°F 72.8°F
Mar 27 76.1°F 72.0°F 72.8°F
Mar 28 76.2°F 73.6°F 72.9°F
Mar 29 76.4°F 73.4°F 73.1°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Haikou by month

In Haikou, the months April through November offer comfortable swimming conditions, which amounts to 252 swimming days.
The warmest water in Haikou was recorded on July 30, 2020, reaching a 89.2°F. While the coldest temperature occurred on February 14, 2018, dipping to 61.6°F. The average readings by season are 69.5°F in Winter, 76.1°F in Spring, 85.4°F in Summer, and 81.3°F in Autumn.