Long Mong Wan
Sai Kung · Hong Kong
Rating right now
A year-round beach on the South China Sea near Sai Kung, Long Mong Wan is exposed to NW swell — W–N on the forecast is when it lights up, ideally with a E–S wind.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~27°C (80.6°F) on average
Jan
19.7°C
67.5°F · 17.2–22°C
Feb
19.4°C
66.9°F · 14.9–22°C
Mar
20.7°C
69.3°F · 18–23.7°C
Apr
22.8°C
73°F · 20.8–25.7°C
May
26.1°C
79°F · 24–28.9°C
Jun
28.2°C
82.8°F · 25.2–31.3°C
Jul
28.9°C
84°F · 26.7–30.8°C
Aug
28.8°C
83.8°F · 26.7–30.7°C
Sep
28.4°C
83.1°F · 26.1–30.5°C
Oct
27°C
80.6°F · 24.5–28.9°C
Nov
23.7°C
74.7°F · 21.7–26.3°C
Dec
20.9°C
69.6°F · 17.8–23.1°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
W–N
Best wind
E–S
Break type
Beach break
Best season
Year-round
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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