Warm water. Now in the South China Sea +30°. Swimming season — from January to December.
Water temperature map of the South China Sea
ColderWarmer
Water temperature in the South China Sea by city today 📍
+27°
Hong Kong
+31°
Kota-Kinabalu
+31°
Danang
+27°
Kuching
+28°
Sibu
+32°
Seria
+32°
Bandar Seri Begawan
+32°
Kuala Belait
+30°
Macau
+32°
Kuching
+32°
Miri
+31°
Kota Kinabalu
| City | Now | Swimming |
|---|---|---|
| Hong Kong | +27° | Warm water |
| Kota-Kinabalu | +31° | Warm water |
| Danang | +31° | Warm water |
| Kuching | +27° | Warm water |
| Sibu | +28° | Warm water |
| Seria | +32° | Warm water |
| Bandar Seri Begawan | +32° | Warm water |
| Kuala Belait | +32° | Warm water |
| Macau | +30° | Warm water |
| Kuching | +32° | Warm water |
| Miri | +32° | Warm water |
| Kota Kinabalu | +31° | Warm water |
| Macau | +29° | Warm water |
| Xiamen | +30° | Warm water |
| Khonggay | +31° | Warm water |
| Shian Shi | +29° | Warm water |
| Bintulu | +32° | Warm water |
| Cam Ranh | +29° | Warm water |
| Kampkha | +31° | Warm water |
| Fonshan | +29° | Warm water |
| Da Nang | +31° | Warm water |
| Kaohsiung | +29° | Warm water |
| Labuan | +32° | Warm water |
| Hue | +31° | Warm water |
| Qui Nhon | +27° | Warm water |
| Nha Trang | +29° | Warm water |
| Bruney | +32° | Warm water |
| Phan Thiet | +28° | Warm water |
| Yunkan | +30° | Warm water |
| Tsandzhou | +29° | Warm water |
| Zhuhai | +30° | Warm water |
| Taichung | +29° | Warm water |
| Yuanlin | +29° | Warm water |
| Anbu | +29° | Warm water |
| Chzhankhua | +29° | Warm water |
| Shantou | +29° | Warm water |
| Tainan | +29° | Warm water |
| Shenchzhen | +31° | Warm water |
| Shanwei | +29° | Warm water |
| Beihai | +29° | Warm water |
🎣 Fishing in cities on the South China Sea
Water temperature forecast in the South China Sea 📅
Tuesday
8 September
+29°
Wednesday
9 September
+29°
Thursday
10 September
+29°
Friday
11 September
+29°
Saturday
12 September
+30°
Sunday
13 September
+30°
Monday
14 September
+30°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the South China Sea this weekend
Saturday, 12 September · water +30° · warm water
Sunday, 13 September · water +30° · warm water
Water temperature in the South China Sea for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +33° in summer. The monthly normal is below.
Monthly water temperature in the South China Sea 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +28 | +27 | +27 | +30 | +31 | +29 | +31 | +33 | +31 | +28 | +29 | +28 |
Climate normal (model estimate).
Swimming conditions in the South China Sea by month
Jan+28°Swimming season — comfortable.
Feb+27°Swimming season — comfortable.
Mar+27°Swimming season — comfortable.
Apr+30°Swimming season — comfortable.
May+31°Swimming season — comfortable.
Jun+29°Swimming season — comfortable.
Jul+31°Swimming season — comfortable.
Aug+33°Swimming season — comfortable.
Sep+31°Swimming season — comfortable.
Oct+28°Swimming season — comfortable.
Nov+29°Swimming season — comfortable.
Dec+28°Swimming season — comfortable.
When to swim in the South China Sea 🏖️
🏖️
Comfortable to swim in from January to December, when the water warms to +17° and above.
Cities on the South China Sea 📍
Hong KongKota-KinabaluDanangKuchingSibuSeriaBandar Seri BegawanKuala BelaitMacauKuchingMiriKota KinabaluMacauXiamenKhonggayShian ShiBintuluCam RanhKampkhaFonshanDa NangKaohsiungLabuanHueQui NhonNha TrangBruneyPhan ThietYunkanTsandzhouZhuhaiTaichungYuanlinAnbuChzhankhuaShantouTainanShenchzhenShanweiBeihai
FAQ about water in the South China Sea ❓
What is the water temperature in the South China Sea now?
Now +30° — Warm water.
Can you swim in the South China Sea?
Comfortable season — from January to December.
When is water warmest in the South China Sea?
Warmest in August — up to +33°.
Where does the water temperature data come from?
A water temperature model (by latitude, longitude and day of year) and SST measurements, by cities.
Water temperature archive in the South China Sea on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Hong Kong | +32° | +31° | +28° | +27° | +29° | +32° | +33° | +31° | +29° | +27° |
| Kota-Kinabalu | +35° | +33° | +30° | +30° | +31° | +34° | +35° | +33° | +31° | +29° |
| Danang | +32° | +30° | +27° | +27° | +28° | +31° | +32° | +30° | +28° | +27° |
| Kuching | +33° | +31° | +28° | +28° | +29° | +32° | +33° | +31° | +29° | +27° |
| Sibu | +33° | +31° | +29° | +28° | +30° | +32° | +33° | +31° | +29° | +28° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the South China Sea — in detail
Water temperature in the South China Sea is tracked across 67 cities. The water is now about +30°. The page has a temperature map by city, a daily forecast and a monthly climate normal.