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Surf Forecasts:
Dark Reef surfForecast / Khánh Hoà / Vietnam
16 Day Weather and Surf, issued 12 pm Sunday 17 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
30.0° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Dark Reef this week:
The surf forecast for Dark Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 18) at 10PM. The primary swell is predicted to be 1.0m and 5s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Dark Reef in the next 16 days are 1.4m 6s and forecast to arrive on Tuesday (May 19) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Wednesday (May 20) at 7PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 18th May) | 3.5ft (1.0m) 5s |
| Best Surf | 10PM (Mon 18th May) | 3.5ft (1.0m) 5s |
| Most Powerful | 10PM (Tue 19th May) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Dark Reef over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Warm (max 31°C on Sun morning, min 26°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed afternoon. Warm (max 31°C on Wed morning, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
S 4 | S 4 | S 4 | S 4 | S 4 | S 5 | NE 9 | S 5 | NE 8 | NE 8 | NE 8 | NE 8 | S 5 | S 5 | NE 9 | ENE 9 | S 5 | S 5 | ENE 9 | S 4 | NE 8 | |
12 | 18 | 25 | 17 | 24 | 34 | 78 | 62 | 44 | 33 | 24 | 17 | 55 | 77 | 13 | 8 | 36 | 27 | 8 | 6 | 3 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross | cross-off | glassy | cross-on | off | cross-on | cross | cross-off | cross-on | cross | glassy | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | off | |
High Tide | 9:13AM1.73m | 9:54AM1.79m | 10:39AM1.79m | 11:27AM1.74m | 12:16PM1.62m | 1:07PM1.45m | |||||||||||||||
Low Tide | 5:17PM-0.03m | 6:11PM-0.13m | 7:07PM-0.15m | 8:04PM-0.10m | 9:02PM-0.01m | 9:57PM0.12m | 10:45PM0.27m | ||||||||||||||
 |  |  | |  |  | | | | | | |  | | | | | | | | | |
 | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — |
— | 2 | — | — | 1 | 4 | 1 | 5 | 3 | 1 | 3 | — | — | 2 | 1 | — | 3 | 1 | — | 4 | 4 | |
Temp °C | 31 | 30 | 28 | 30 | 30 | 27 | 30 | 30 | 27 | 31 | 30 | 27 | 30 | 30 | 28 | 31 | 30 | 27 | 31 | 30 | 28 |
34 | 32 | 32 | 32 | 32 | 31 | 34 | 33 | 31 | 34 | 32 | 31 | 34 | 34 | 32 | 34 | 33 | 31 | 33 | 33 | 33 | |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 9 | NE 9 | NE 10 | NE 8 | NE 8 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 9 | NE 9 | NE 9 | S 4 | ENE 9 | ENE 9 | SSW 5 | NE 8 | NE 8 |
 kJ | 3 | 3 | 3 | 4 | 11 | 24 | 78 | 62 | 44 | 33 | 24 | 17 | 21 | 13 | 13 | 14 | 8 | 8 | 7 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | E 7 | — | — | NE 9 | E 11 | NE 10 | — | — | — | — | — | — | — | — | E 5 | ENE 9 | — | — | ESE 4 | — | — |
| kJ | 1 | — | — | 3 | 2 | 16 | — | — | — | — | — | — | — | — | 1 | 8 | — | — | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 9 | — | — |
| kJ | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — |
Wind waves Height (m) Direction Period (s) | S 4 | S 4 | S 4 | S 4 | S 4 | S 5 | S 4 | S 5 | S 5 | SSE 5 | S 7 | S 6 | S 5 | S 5 | S 5 | SSW 5 | S 5 | S 5 | — | S 4 | S 5 |
| kJ | 12 | 18 | 25 | 17 | 24 | 34 | 13 | 59 | 60 | 22 | 389 | 102 | 55 | 77 | 74 | 28 | 36 | 27 | — | 6 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1289 | 1346 | 425 | 425 | 699 | 0 | 425 | 447 | 13 | 425 | 471 | 425 | 425 | 699 | 425 | 425 | 911 | 425 | 1282 | 1282 | 425 |
Best forecast wave conditions in Khánh Hoà | |||||||||||||||||||||
Best forecast wave conditions in Vietnam | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Dark Reef 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.
Information about the Dark Reef Surf forecast
The above surf forecast table for Dark Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dark Reef can be found by selecting the local surf guide option on the grey menu. Our Dark Reef surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Dark Reef) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Dark Reef may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Dark Reef is 10 km (6 miles) from the city of Nhatrang. If you plan a holiday in Khánh Hoà, look for hotels and other accommodation in Nhatrang. Nhatrang has rooms for a wide range of budgets as well as car hire and transport links.
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