Big Wave Bay Surf Forecast

/ Hong Kong (9 surf breaks) /

China (24 surf breaks) / Lat Long: (22.25° N 114.25° E)

Surf Forecasts:

Big Wave Bay surfForecast / Hong Kong / China

48hr Weather and Surf, issued 1 am Wednesday 20 May 2026 HKT

Forecast update in hr min s Forecast update imminent

Big Wave Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Big Wave Bay sea temperature is 25.7° C
(Which is 1.1°C colder than average for this time of year)

How big are the waves at Big Wave Bay today?

The current surf forecast for Big Wave Bay at 7AM is: 0.6m 6s primary swell from a South-southeast direction and 0.2m 9s secondary swell from a East-southeast direction (forecast issued at 01:00am May 20). An open ocean swell of 0.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HKT) & Date	Wave Height	Wave Period
Morning (20 May)	2ft (0.6m)	6s
Afternoon (20 May)	0.5ft (0.2m)	9s
Evening (20 May)	0.5ft (0.2m)	10s

Table - waves today at Big Wave Bay. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

	Short Range Forecast Heavy rain (total 28mm), heaviest during Thu afternoon. Warm (max 28°C on Fri morning, min 25°C on Wed morning). Wind will be generally light.
	Wednesday 20								Thursday 21								Friday 22
	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 6	ESE 5	SSE 6	SE 5	E 9	SE 5	SE 5	ESE 10	S 6	ESE 10	ESE 9	ESE 10	ESE 10	ESE 11	ESE 10	ESE 10	ESE 10	ESE 10	E 10	E 10	ESE 10	ESE 9	ESE 9	ESE 9
Wave Graph
kJ	20	19	28	12	6	6	7	10	26	20	16	9	18	22	22	20	20	20	50	49	18	29	17	29
Wind (km/h)	SSE	S	SW	SSE	SE	E	E	ESE	SSW	SSW	SSE	SE	S	SSW	NW	E	SSE	S	SSW	S	S	S	S	S
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross-on	cross	on	on	cross-on	cross-on	glassy	cross	cross-on	cross-on	on	cross-on	cross	off	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on
High Tide				10:00AM2.05m								10:45AM1.94m									11:33AM1.78m
Low Tide							6:33PM-0.07m								7:31PM0.04m									8:25PM0.15m


	—	5:41	—	—	—	—	—	—	—	5:41	—	—	—	—	—	—	—	5:41	—	—	—	—	—	—
	—	—	—	—	—	6:57	—	—	—	—	—	—	—	6:57	—	—	—	—	—	—	—	6:58	—	—
mm	—	2	4	3	—	—	—	1	1	2	1	1	2	5	2	—	—	1	1	1	1	1	—	—
Temp °C	26	26	25	25	25	25	25	26	26	25	26	26	27	27	26	26	27	27	27	28	28	28	27	27
Feels °C	30	29	26	28	28	28	29	31	30	29	29	30	30	29	30	30	32	31	30	31	30	31	30	32
Swell 1 Height (m) Direction Period (s)	ESE 6	ESE 5	ESE 9	SSW 6	SSW 6	SSW 6	SSW 6	S 6	ESE 5	SSW 6	ESE 9	ESE 10	SSW 6	SSW 7	SSW 7	SSW 7	S 7	S 7	ESE 10	ESE 10	ESE 10	ESE 9	SSW 7	ESE 9
kJ	20	19	8	23	22	23	16	20	2	39	16	9	31	34	26	36	33	44	19	18	18	17	51	17
Swell 2 Height (m) Direction Period (s)	SSW 6	SSW 6	—	SE 5	ESE 5	E 9	SE 5	ESE 5	ESE 10	ESE 10	SE 11	ESE 4	ESE 10	ESE 11	ESE 10	ESE 10	ESE 10	ESE 10	E 10	E 10	—	ESE 9	ESE 9	ESE 9
kJ	13	13	—	12	5	6	6	5	10	20	4	2	18	22	22	20	20	20	50	49	—	29	17	29
Swell 3 Height (m) Direction Period (s)	ESE 9	ESE 9	E 5	ESE 9	E 9	SE 11	E 9	ESE 10	ESE 5	—	—	SE 11	SE 11	E 8	—	—	—	—	—	—	—	—	—	—
kJ	8	8	1	8	6	4	7	10	2	—	—	5	5	12	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	—	—	SSE 6	—	SSE 4	SE 5	—	—	S 6	—	SSW 6	SSW 6	—	—	—	—	—	SSW 7	S 7	S 7	SSW 7	SSW 7	—	SSW 7
kJ	—	—	28	—	3	6	—	—	26	—	30	30	—	—	—	—	—	64	43	44	49	51	—	49
Nearest Offshore or Glassy	Chialoshui South	Chialoshui South	Chialoshui South	Sunrise North	Chialoshui South	Riyue Bay (Riyuewan) Hainan	Riyue Bay (Riyuewan) Hainan	Repulse Bay Hong Kong	Kenting South	Kenting South	Chialoshui South	Chialoshui South	Chialoshui South	Tawu South	Kenting South	Kenting South	Kenting South	Kenting South	Tawu South	Chialoshui South	Chialoshui South	Kenting South	Kenting South	Kenting South
Rating (10 max)	2	1	1	1	1	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	683	683	683	819	683	581	581	6	670	670	683	683	683	683	670	670	670	670	683	683	683	670	670	670
Best forecast wave conditions in Hong Kong								Repulse Bay
Rating (10 max)								1
Best forecast wave conditions in China						Riyue Bay (Riyuewan) Hainan	Riyue Bay (Riyuewan) Hainan	Repulse Bay Hong Kong	Funingwan Fujian
Rating (10 max)						2	2	1	1
Header Global	Bali Village Indonesia	Afife Portugal	Cavalos de Fao Portugal	Cavalos de Fao Portugal	Crazy Left Portugal	Achadas Da Cruz Portugal	Anglet - Corsaires France	Anglet - La Barre France	Trial Harbour Australia	Trial Harbour Australia	Afife Portugal	Anglet - Corsaires France	Lambe Lambe Brazil	Lambe Lambe Brazil	Balimbing Indonesia	Bali Village Indonesia	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Itaúna Brazil	Itaúna Brazil	Itaúna Brazil	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia
Rating (10 max)	4	4	5	5	5	4	4	4	5	5	4	4	5	5	4	4	4	4	5	5	5	7	8	7

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Latest Updates

Ben Mondy

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Wave Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Big Wave Bay Surf Forecast

Big Wave Bay surfForecast / Hong Kong / China

How big are the waves at Big Wave Bay today?

Short Range Forecast

Latest Updates

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

The roadsurfer VanLife Taster Menu

Cyclone Vainau Smashes NZ and Bells Gears Up for 50-year Storm*

Get €100 Off Your Next Personalised, Expert-Planned Trip with Tourlane

FREE! Surf-Forecast.com widget for your website