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Surf Forecasts:
Dark Reef surfForecast / Khánh Hoà / Vietnam
48hr Weather and Surf, issued 12 am Thursday 21 May 2026 +07Forecast update in hr min s Forecast update imminent
Dark Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dark Reef sea temperature is
30.2° C
(Which is slightly warmer than usual)How big are the waves at Dark Reef today?
The current surf forecast for Dark Reef at 7AM is: 0.4m 9s primary swell from a Northeast direction and 0.4m 4s secondary swell from a Southeast direction (forecast issued at 12:00am May 21). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 1.5ft (0.4m) | 9s |
| Afternoon (21 May) | 1.5ft (0.4m) | 9s |
| Evening (21 May) | 2.5ft (0.8m) | 4s |
Table - waves today at Dark Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Fri afternoon. Warm (max 31°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 5 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | S 4 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | S 4 | S 4 | S 4 | S 4 | ENE 9 | S 4 | S 4 | S 4 | S 4 | |
34 | 25 | 20 | 21 | 21 | 24 | 24 | 24 | 21 | 13 | 13 | 13 | 13 | 13 | 12 | 14 | 15 | 10 | 8 | 7 | 10 | 17 | 18 | 16 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross-off | off | off | glassy | cross-on | cross-on | cross-on | cross | cross-off | off | off | glassy | on | cross-on | cross | cross | cross-off | |
High Tide | 11:27AM1.74m | 12:16PM1.62m | 1:07PM1.45m | |||||||||||||||||||||
Low Tide | 9:02PM-0.01m | 9:57PM0.12m | ||||||||||||||||||||||
 |  |  | | | | |  | | | | | | | | | | | | | | | | | |
 | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:01 | — | — |
— | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | |
Temp °C | 27 | 27 | 28 | 31 | 31 | 31 | 29 | 27 | 26 | 26 | 28 | 31 | 31 | 30 | 28 | 27 | 26 | 26 | 27 | 31 | 31 | 30 | 29 | 28 |
31 | 31 | 32 | 33 | 31 | 33 | 32 | 31 | 30 | 30 | 33 | 34 | 33 | 32 | 32 | 31 | 30 | 30 | 31 | 34 | 33 | 32 | 33 | 32 | |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 9 | SE 4 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SE 5 | NE 8 |
 kJ | 22 | 20 | 5 | 21 | 21 | 21 | 21 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 4 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | NE 9 | — | — | — | — | — | NE 9 | ESE 4 | SE 4 | — | — | — | — | — | SE 4 | E 6 | — | ESE 4 | — | — | NE 8 | SE 6 |
| kJ | — | — | 20 | — | — | — | — | — | 21 | 1 | 2 | — | — | — | — | — | 1 | 1 | — | 2 | — | — | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | S 5 | S 4 | S 4 | SSE 4 | SSE 4 | SSE 4 | S 4 | S 4 | S 4 | S 4 | SSW 4 | SSE 4 | S 3 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 |
| kJ | 34 | 25 | 12 | 13 | 17 | 24 | 24 | 24 | 16 | 7 | 4 | 4 | 6 | 6 | 10 | 14 | 15 | 10 | 7 | 7 | 10 | 17 | 18 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 13 | 425 | 911 | 1282 | 1282 | 911 | 425 | 13 | 425 | 425 | 477 | 911 | 911 | 911 | 425 | 425 | 425 | 425 | 911 | 911 | 911 | 425 | 425 |
Best forecast wave conditions in Khánh Hoà | ||||||||||||||||||||||||
Best forecast wave conditions in Vietnam | ||||||||||||||||||||||||
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