Dark Reef 48 hour detailed Surf Forecast

Lat Long: 12.16° N 109.20° E

Issued: 6 am 21 Sep 2026 (local time)

Forecast update in hr min

Today's Dark Reef sea temperature is

29.6°C

Dark Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Dark Reef today (21 Sep):

Morning surf: Morning surf (21 Sep, local time) - 3ft (0.9m), 7s period with NNE swell.
Afternoon surf: Afternoon surf (21 Sep, local time) - 3.5ft (1.0m), 7s period with NNE swell.
Evening surf: Evening surf (21 Sep, local time) - 4.5ft (1.3m), 6s period with NNE swell.

The current surf forecast for Dark Reef at 12PM is: 1.0m 7s primary swell from a North-northeast direction and 0.7m 7s secondary swell from a Northeast direction, 0.1m 12s secondary swell from a Northeast direction (forecast issued at 06:00am September 21). The wind direction is predicted to be glassy.

Time (+07) & Date	Wave Height	Wave Period
Morning (21 Sep)	3ft (0.9m)	7s
Afternoon (21 Sep)	3.5ft (1.0m)	7s
Evening (21 Sep)	4.5ft (1.3m)	6s

Table - waves today at Dark Reef. (Swell directed towards the surf break)

	Short Range Forecast Heavy rain (total 57mm), heaviest during Wed afternoon. Warm (max 28°C on Tue morning, min 24°C on Wed night). Wind will be generally light.
	Monday 21							Tuesday 22								Wednesday 23
	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM
Rating (10 max)	1	1	1	1	1	1	2	1	1	1	0	0	0	0	0	1	1	2	1	0	0	0	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	NE 7	NNE 7	NNE 7	NE 7	NNE 6	NNE 6	NNE 6	NNE 6	N 6	N 6	NE 16	NNE 6	NNE 6	NNE 6	NNE 6	NE 14	ENE 14	ENE 14	ENE 13	ENE 13	ENE 13	ENE 13	ENE 12
Wave Graph
kJ	54	68	89	49	96	97	109	68	77	88	63	87	104	108	84	99	133	131	120	114	113	109	103
Wind (km/h)	WNW	WNW	SW	S	WNW	NW	NW	NW	NW	NW	ENE	NE	NNE	NNE	N	NNW	NNW	NW	NNW	NNE	NNE	NE	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	glassy	glassy	glassy	glassy	cross-off	cross-off	cross-off	cross-off	cross-off	on	cross-on	cross-on	cross	cross	cross-off	cross-off	glassy	glassy	cross	cross	cross-on	glassy
High Tide	2:41AM1.34m									4:14AM1.32m								5:49AM1.33m
Low Tide					1:47PM0.32m								2:30PM0.30m								3:03PM0.30m


	5:31	—	—	—	—	—	—	—	5:31	—	—	—	—	—	—	—	5:31	—	—	—	—	—	—
	—	—	—	—	5:39	—	—	—	—	—	—	—	5:38	—	—	—	—	—	—	—	5:38	—	—
mm	1	1	1	2	2	1	—	—	—	—	1	4	5	3	3	2	2	3	4	3	4	6	6
Temp °C	25	25	26	27	25	25	25	25	25	26	28	28	27	26	26	26	25	25	25	25	25	25	25
Feels °C	28	30	31	32	30	29	29	29	28	30	31	31	29	29	30	30	29	30	30	29	29	29	30
Swell 1 Height (m) Direction Period (s)	NE 7	NNE 7	NE 7	NE 7	NNE 7	NNE 6	NNE 6	NNE 6	NNE 6	NNE 6	NE 16	NE 16	ENE 15	ENE 15	ENE 15	NE 14	ENE 14	NNE 5	NNE 5	NNE 5	ENE 13	ENE 13	ENE 12
kJ	54	68	53	49	57	71	80	68	53	41	63	64	88	87	84	99	133	32	24	17	113	109	103
Swell 2 Height (m) Direction Period (s)	ENE 12	NE 12	ENE 12	NE 12	NE 12	NE 12	ENE 17	ENE 17	ENE 17	ENE 15	NE 12	S 6	S 6	—	—	S 6	S 6	ENE 14	ENE 13	ENE 13	S 6	S 5	SSE 7
kJ	15	6	15	6	6	6	28	27	29	46	5	1	1	—	—	1	1	131	120	114	3	2	15
Swell 3 Height (m) Direction Period (s)	—	—	—	E 19	NE 18	NE 18	ENE 12	NE 12	NE 12	NE 12	S 6	—	—	—	—	—	—	S 5	S 5	S 6	NE 7	—	NNE 6
kJ	—	—	—	7	13	12	14	6	5	5	1	—	—	—	—	—	—	1	1	3	2	—	20
Wind waves Height (m) Direction Period (s)	N 4	NNW 4	NNE 7	—	NNE 6	NNE 6	NNE 6	—	N 6	N 6	NNE 6	NNE 6	NNE 6	NNE 6	NNE 6	NNE 6	NNE 6	N 5	NNE 5	N 5	NNE 5	NNE 5	—
kJ	21	10	89	—	96	97	109	—	77	88	53	87	104	108	74	60	45	51	42	32	15	15	—
Nearest Offshore or Glassy	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Cue Dai Beach Da Nang	Cue Dai Beach Da Nang	Bang Tao Phuket	Cue Dai Beach Da Nang	Cue Dai Beach Da Nang	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Hon Chong Beach Break Khánh Hoà	Vung Tau (Back Beach) Ba Ria-Vung Tau	Mui Ne Binh Thuan	Dark Reef Khánh Hoà
Rating (10 max)	1	1	1	1	1	1	2	1	1	1	2	2	1	2	2	1	1	2	1	1	1	1	1
Distance (km)	0	0	0	0	0	0	0	0	0	0	425	425	1282	425	425	0	0	0	0	13	307	169	0
Best forecast wave conditions in Khánh Hoà	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef	Dark Reef						Dark Reef	Dark Reef	Dark Reef	Dark Reef	Hon Chong Beach Break			Dark Reef
Rating (10 max)	1	1	1	1	1	1	2	1	1	1						1	1	2	1	1			1
Best forecast wave conditions in Vietnam	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Lang Co Da Nang	Cue Dai Beach Da Nang		China Beach Da Nang	China Beach Da Nang	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Dark Reef Khánh Hoà	Hon Chong Beach Break Khánh Hoà	Vung Tau (Back Beach) Ba Ria-Vung Tau	Mui Ne Binh Thuan	Dark Reef Khánh Hoà
Rating (10 max)	1	1	1	1	1	1	2	1	1	1	2	2		2	2	1	1	2	1	1	1	1	1
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Rating (10 max)	8	6	5	5	5	4	6	7	9	5	6	5	9	9	8	9	9	8	8	9	7	6	6

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

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Dark Reef 48 hour detailed Surf Forecast

How big are the waves at Dark Reef today (21 Sep):

Short Range Forecast

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