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Surf Forecasts:
Dark Reef surfForecast / Khánh Hoà / Vietnam
48hr Weather and Surf, issued 12 pm Sunday 31 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
30.6° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Dark Reef today (31 May):
- Morning surf: Morning surf (31 May, local time) - 0.5ft (0.2m), 11s period with ENE swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 4s period with NNE swell.
- Evening surf: Evening surf (31 May, local time) - 0.5ft (0.2m), 10s period with ENE swell.
The current surf forecast for Dark Reef at 4PM is: 0.2m 10s primary swell from a East-northeast direction and 0.6m 4s secondary swell from a North-northeast direction (forecast issued at 12:00pm May 31). An open ocean swell of 0.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 0.5ft (0.2m) | 11s |
| Afternoon (31 May) | 2ft (0.6m) | 4s |
| Evening (31 May) | 0.5ft (0.2m) | 10s |
Table - waves today at Dark Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 10mm), heaviest on Sun afternoon. Warm (max 30°C on Tue morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 11 | ENE 11 | NNE 4 | ENE 10 | ENE 10 | NE 4 | NE 4 | ENE 4 | E 4 | E 4 | E 4 | NE 9 | NE 9 | ENE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 12 | NE 12 | |
11 | 11 | 11 | 10 | 10 | 5 | 5 | 5 | 3 | 4 | 4 | 3 | 3 | 7 | 11 | 10 | 10 | 21 | 20 | 20 | 17 | 17 | 37 | 69 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | glassy | cross | cross | cross-off | off | cross-off | off | off | cross-off | cross | cross | cross-off | off | off | cross-off | off | |
High Tide | 8:47AM1.53m | 9:21AM1.56m | ||||||||||||||||||||||
Low Tide | 5:13PM0.13m | 5:50PM0.09m | 6:30PM0.09m | |||||||||||||||||||||
 | | |  | |  |  |  |  | | |  | | | | | | | |  | | | |  | |
 | 5:16 | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — |
 | — | — | 6:04 | — | — | — | — | — | — | — | 6:04 | — | — | — | — | — | — | — | 6:04 | — | — | — | — | 6:05 |
1 | 1 | 3 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 28 | 29 | 28 | 28 | 27 | 26 | 26 | 26 | 28 | 29 | 28 | 27 | 27 | 26 | 26 | 26 | 29 | 30 | 30 | 28 | 27 | 27 | 26 | 28 |
33 | 34 | 32 | 33 | 31 | 30 | 30 | 30 | 32 | 32 | 31 | 30 | 31 | 30 | 30 | 29 | 33 | 32 | 32 | 30 | 30 | 30 | 28 | 31 | |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 11 | S 6 | S 6 | S 6 | NE 4 | NE 4 | ENE 4 | E 4 | E 4 | SSW 6 | E 4 | S 6 | ENE 9 | SSW 6 | SSW 5 | SSW 5 | NE 8 | NE 8 | NE 8 | NE 7 | S 6 | S 7 | S 7 |
 kJ | 11 | 11 | 3 | 3 | 2 | 5 | 5 | 5 | 3 | 3 | 7 | 1 | 2 | 7 | 6 | 5 | 8 | 21 | 20 | 20 | 17 | 52 | 94 | 106 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | ENE 10 | ENE 10 | ENE 10 | S 5 | SSW 5 | SSW 5 | SSW 5 | S 6 | E 4 | NE 9 | ENE 4 | SSW 6 | NE 8 | NE 8 | NE 8 | SSW 7 | NE 12 | NE 12 | ENE 12 | NE 7 | NE 8 | NE 12 |
| kJ | 2 | 2 | 11 | 10 | 10 | 2 | 5 | 5 | 2 | 6 | 3 | 3 | 1 | 4 | 11 | 10 | 10 | 5 | 6 | 6 | 14 | 17 | 20 | 69 |
Swell 3 Height (m) Direction Period (s) | S 6 | S 6 | SW 5 | SW 5 | — | NE 10 | NE 10 | NE 10 | N 3 | NE 10 | NE 10 | SE 5 | NE 9 | E 4 | E 4 | E 4 | SSW 7 | — | — | — | NE 8 | ENE 12 | NE 12 | NNE 7 |
| kJ | 1 | 1 | 1 | 1 | — | 4 | 4 | 4 | 1 | 4 | 4 | 1 | 3 | 1 | 1 | 1 | 5 | — | — | — | 2 | 14 | 37 | 5 |
Wind waves Height (m) Direction Period (s) | NE 3 | NNE 4 | NNE 4 | NE 4 | NE 4 | — | NNW 4 | N 4 | NNW 3 | N 3 | — | SSW 6 | SSW 3 | SSW 3 | — | SSW 5 | — | S 5 | S 4 | S 5 | S 5 | SSW 6 | — | — |
| kJ | 3 | 5 | 9 | 7 | 7 | — | 3 | 1 | 2 | 2 | — | 6 | 1 | 1 | — | 14 | — | 11 | 9 | 36 | 54 | 121 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1012 | 1393 | 1393 | 1012 | 1012 | 1012 | 699 | 677 | 1373 | 1393 | 1393 | 1012 | 425 | 425 | 425 | 425 | 1004 | 1393 | 1393 | 1012 | 425 | 425 | 13 | 0 |
Best forecast wave conditions in Khánh Hoà | ||||||||||||||||||||||||
Best forecast wave conditions in Vietnam | ||||||||||||||||||||||||
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