Hong Kong — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Hong Kong (Hong Kong). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Hong Kong help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Hong Kong in the South China Sea today is 28°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). 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 Over the Last 30 Days
Water temperature in Hong Kong today is lower than both a week ago and a month ago. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Hong Kong will be 26.3°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 20 | 28.2°C | 28.3°C | |
| OCT 21 | 28.2°C | 28.3°C | |
| OCT 22 | 28.5°C | 28.5°C | |
| OCT 23 | 28.5°C | 28.3°C | |
| OCT 24 | 28.5°C | 27.8°C | |
| OCT 25 | 28.4°C | 27.5°C | |
| OCT 26 | 28.4°C | 27.5°C | |
| OCT 27 | 28.1°C | 27.5°C | |
| OCT 28 | 27.8°C | 27.3°C | 27.8°C |
| OCT 29 | 26.3°C | 27.6°C | |
| OCT 30 | 26.3°C | 27.4°C | |
| OCT 31 | 26.0°C | 27.2°C | |
| NOV 1 | 26.0°C | 27.0°C | |
| NOV 2 | 25.8°C | 26.8°C | |
| NOV 3 | 25.8°C | 26.5°C | |
| NOV 4 | 25.5°C | 26.3°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
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 to enhance accuracy.
Water temperature data for this location 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.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Hong Kong sits on the South China Sea and has a subtropical marine climate that gives its coastal waters distinct seasonal temperature swings. Surface water temperatures typically range from around 14–16 °C in the coldest winter months to roughly 27–30 °C in the peak of summer. Spring brings a steady rise, with sea temperatures generally between 18–24 °C, while autumn sees cooling from about 22–26 °C as the season progresses. These averages can vary locally around bays, harbors and sheltered coves, and are influenced by monsoonal winds, rainfall and occasional typhoon activity, which may temporarily change surface conditions and warmth.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 17°C | 19°C | 21°C |
| February | 17°C | 19°C | 22°C |
| March | 17°C | 21°C | 24°C |
| April | 19°C | 23°C | 26°C |
| May | 23°C | 27°C | 30°C |
| June | 25°C | 28°C | 31°C |
| July | 27°C | 29°C | 32°C |
| August | 27°C | 29°C | 32°C |
| September | 26°C | 29°C | 30°C |
| October | 23°C | 28°C | 30°C |
| November | 22°C | 25°C | 27°C |
| December | 16°C | 21°C | 25°C |
* Click on a month to view detailed water temperature data.
Hong Kong: Weather Forecast
October 29
October 30
October 31
November 1
Location, Beaches & Local Information
Nearby Beaches & Facilities
Nam Wan / Nan Wan
Shui Hao Wan / Shui Kou Wan Sha Ni Tan
Tsin Yue Wan / Jian Yu Wan
Chung Hom Kok Beach
Sandy Bay Swimming Shed / Sha Wan Yong Peng
Outward Bound - Wong Wan Chau Base
Swimming Conditions
Swimming and beach holidays in Hong Kong are popular in the warmer months when the sea is comfortable for bathing and water sports. Many well-maintained sandy beaches and designated bathing areas on the main island and outlying islands offer lifeguard services, changing facilities and easy access for families. Waters are at their most inviting in summer, also supporting snorkeling, kayaking and short boat trips to quieter coves and marine parks. During cooler months, casual swimmers often limit time in the water or use wetsuits, and visitors should be mindful of seasonal issues such as reduced water quality after heavy rains, occasional jellyfish blooms and local safety advisories before entering the sea.