Surf Forecasts:
Dark Reef surf forecast from 18 Sep 2026:
- Best quality surf: Saturday 19 Sep, 1AM (local time) - 3.5ft (1.0m), 8s period, NE swell with cross-offshore winds.
- Most powerful swell: Wednesday 23 Sep, 4AM (local time) - 2ft (0.6m), 14s period, ENE swell with 136 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 1AM (local time) - 3.5ft (1.0m), 8s period with NE swell.
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 Saturday (Sep 19) at 1AM. The primary swell is predicted to be 1.0m and 8s period. 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 0.6m 14s and forecast to arrive on Wednesday (Sep 23) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Sep 20) at 7AM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 19th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 1AM (Sat 19th Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 4AM (Wed 23rd Sep) | 2ft (0.6m) 14s |
Table - best surf conditions forecast for Dark Reef over the next 16 days.
Short Range ForecastHeavy rain (total 35mm), heaviest during Fri afternoon. Warm (max 29°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Mon afternoon. Warm (max 28°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NNE 5 | NNE 7 | NE 7 | NNE 7 | NNE 6 | NNE 6 | ENE 16 | NE 14 | ENE 13 | ENE 13 | ENE 13 | NE 12 | NE 12 | NE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 135 | 129 | 95 | 129 | 91 | 57 | 59 | 86 | 47 | 93 | 50 | 47 | 95 | 102 | 120 | 114 | 108 | 72 | 68 | 31 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | glassy | cross-off | cross-off | cross | cross-off | glassy | glassy | cross-off |
High Tide | 00:58AM1.39m | 1:39AM1.37m | 2:41AM1.34m | 4:14AM1.32m | 5:49AM1.33m | 7:05AM1.33m | 11:12PM0.98m | |||||||||||||
Low Tide | 11:25AM0.37m | 12:48PM0.35m | 1:47PM0.32m | 2:30PM0.30m | 3:03PM0.30m | 3:30PM0.34m | 1:35AM0.95m | |||||||||||||
 |  |  | | | | | | | | | | |  |  | |  |  | |  | |
 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — |
 | 5:42 | — | — | 5:40 | — | — | 5:40 | — | — | 5:39 | — | — | 5:38 | — | — | 5:38 | — | — | 5:37 | — |
mm | 6 | 5 | — | 3 | 6 | 1 | 5 | 5 | 4 | 12 | 7 | 3 | 5 | 3 | 2 | 3 | 1 | — | 5 | 8 |
Temp °C | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 26 | 28 | 27 | 26 | 26 | 26 | 25 | 27 | 27 | 25 | 28 | 27 | 25 |
Feels °C | 33 | 31 | 32 | 32 | 31 | 32 | 31 | 30 | 32 | 29 | 30 | 30 | 31 | 28 | 31 | 31 | 28 | 32 | 32 | 29 |
Swell 1 Height (m) Direction Period (s) | S 5 | NE 8 | NE 8 | S 6 | NE 8 | NE 8 | ENE 13 | NNE 6 | NE 7 | NE 12 | NNE 6 | SSW 6 | ENE 16 | NE 14 | ENE 13 | ENE 13 | ENE 13 | NE 12 | NE 12 | NNE 5 |
| kJ | 2 | 129 | 95 | 3 | 91 | 57 | 17 | 53 | 47 | 6 | 50 | 7 | 95 | 102 | 120 | 114 | 108 | 72 | 68 | 15 |
Swell 2 Height (m) Direction Period (s) | NE 15 | SSW 5 | S 5 | ENE 14 | S 6 | S 5 | S 5 | S 5 | S 5 | S 5 | ENE 16 | ENE 15 | SSW 6 | S 5 | S 5 | SSW 6 | S 5 | S 6 | S 6 | NE 11 |
| kJ | 9 | 6 | 2 | 20 | 2 | 2 | 2 | 2 | 2 | 2 | 27 | 47 | 6 | 5 | 2 | 3 | 1 | 1 | 1 | 31 |
Swell 3 Height (m) Direction Period (s) | — | NE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | S 6 | ENE 12 | ENE 12 | NE 18 | SSW 7 | NE 11 | — | SSW 5 | — | — | — | — | — | NE 8 |
| kJ | — | 8 | 20 | 20 | 17 | 17 | 1 | 15 | 15 | 13 | 4 | 5 | — | 9 | — | — | — | — | — | 20 |
Wind waves Height (m) Direction Period (s) | NE 8 | — | N 3 | NE 8 | — | — | NNE 5 | NNE 7 | — | NNE 7 | — | NNE 6 | NNE 5 | NNE 5 | NNE 6 | NNE 4 | NNE 5 | NE 5 | NE 5 | N 4 |
| kJ | 135 | — | 3 | 129 | — | — | 59 | 86 | — | 93 | — | 36 | 46 | 24 | 18 | 29 | 19 | 39 | 60 | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1012 | 0 | 425 | 728 | 0 | 1260 | 447 | 0 | 0 | 436 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Khánh Hoà | ||||||||||||||||||||
Best forecast wave conditions in Vietnam | ||||||||||||||||||||
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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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