People's Republic of China: where to swim in October?
People's Republic of China, in October: the sea is at 23.2 °C on average along the coast, from 18.8 °C to 27.8 °C depending on the spot. Where the water is warmest (27.8 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 12.1 °C | 2.7 °C – 22.8 °C | pleasant |
| February | 11.1 °C | 1.5 °C – 22.3 °C | pleasant |
| March | 12.4 °C | 3.2 °C – 23.3 °C | warm |
| April | 15.8 °C | 7.2 °C – 25.8 °C | warm |
| May | 20.1 °C | 12.3 °C – 28.7 °C | very warm |
| June | 23.6 °C | 18.3 °C – 29.3 °C | very warm |
| July | 26.2 °C | 22.3 °C – 29.5 °C | very warm |
| August | 27.4 °C | 25.3 °C – 29.3 °C | very warm |
| September | 26.3 °C | 23.2 °C – 29.2 °C | very warm |
| October | 23.2 °C | 18.8 °C – 27.8 °C | very warm |
| November | 19.5 °C | 13.4 °C – 26.5 °C | warm |
| December | 15.3 °C | 6.9 °C – 24.5 °C | warm |
Compared with September, the water cools down by 3.1 °C in October. The warmest month: August (27.4 °C). The coldest: February (11.1 °C).
Nearby, in October
- Taiwan 27.0 °C · very warm
- South Korea 21.0 °C · warm
- India 29.3 °C · very warm
- Palau 29.5 °C · very warm
- Federated States of Micronesia 29.9 °C · very warm
- Finland 9.8 °C · cold
- Latvia 12.3 °C · cold
- Sweden 10.5 °C · cold
- Lithuania 13.4 °C · cold
- Australia 21.4 °C · very warm
And right now?
At sea, 23.8 °C on average across 5 stations, from 20.4 °C (Bouée ancrée 22191) to 28.3 °C (Dongshadao(Pratas)). People's Republic of China: water temperature
Frequently asked questions
What is the sea temperature in October?
People's Republic of China, in October: 23.2 °C on average along the coast, from 18.8 °C in the coolest waters to 27.8 °C in the warmest (average of the years 2011 to 2025).
Can you swim in October?
Where the water is warmest (27.8 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
What is the best month for swimming?
The water is warmest in August (27.4 °C on average) and coldest in February (11.1 °C). Where the water is warmest, it goes above 20 °C in these months: January, February, March, April, May, June, July, August, September, October, November, December.
Where is the water warmest in October?
The warmest in October: Taiwan (27.0 °C), South Korea (21.0 °C), India (29.3 °C). The coolest: Australia (21.4 °C).
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.