China · Hainan
Ocean Flower Island
Sea
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Air
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UV
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More like this
Climate · monthly averages
Sea temperature by month
30-year averages (1996–2025). Min/Max are typical daily lows and highs, not record extremes.
61°F
64°F
68°F
72°F
75°F
79°F
82°F
86°F
90°F
93°F
January
69.3°F(66°F–73°F)
February
69.0°F(66°F–72°F)
March
71.8°F(68°F–76°F)
April
77.1°F(73°F–82°F)
May
82.5°F(79°F–85°F)
June
85.1°F(83°F–87°F)
July
85.9°F(83°F–88°F)
August
86.1°F(84°F–88°F)
September
84.4°F(82°F–87°F)
October
81.6°F(79°F–83°F)
November
77.8°F(76°F–80°F)
December
72.8°F(71°F–75°F)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MinMin °F | 6666.5 | 6666.1 | 6868.3 | 7373.2 | 7978.8 | 8382.9 | 8383.1 | 8484.0 | 8282.1 | 7979.5 | 7675.6 | 7170.6 |
| AvgAvg °F | 6969.3 | 6969.0 | 7271.8 | 7777.1 | 8282.5 | 8585.1 | 8685.9 | 8686.1 | 8484.4 | 8281.6 | 7877.8 | 7372.8 |
| MaxMax °F | 7373.0 | 7272.3 | 7675.7 | 8281.5 | 8585.0 | 8787.1 | 8888.2 | 8887.9 | 8786.6 | 8382.9 | 8079.7 | 7575.2 |
Warmest in August (86.1°F). Coldest in February (69.0°F). Comfortable for swimming year-round.
About Ocean Flower Island
Off Hainan's northern coast, Ocean Flower Island is a 381-hectare artificial archipelago of three petal-shaped islets, conceived by Evergrande as a $24-billion resort city before the developer's 2021 collapse left much of it half-built. Imported white sand rings each petal, linked to the mainland near Danzhou by a five-kilometre causeway; a handful of hotels and a theme park now operate among the unfinished towers. The South China Sea sits between 27 and 29 °C from July through September; Haikou Meilan International is about 75 minutes by the G15 expressway.