Surf Forecasts:
H-Reef surf forecast from 15 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 11PM (local time) - 18ft (5.5m), 11s period, ESE swell with 6,701 kJ wave energy.
Best Forecast Surf Conditions for H-Reef this week:
The most powerful waves expected at H-Reef in the next 16 days are 5.5m 11s and forecast to arrive on Saturday (Aug 15) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Aug 21) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 15th Aug) | 18ft (5.5m) 11s |
Table - best surf conditions forecast for H-Reef over the next 16 days.
The Lowdown
Alright, let’s break down the next couple of weeks. The start is a total write-off, no two ways about it. We’ve got a few days of strong winds and sloppy, stormy surf. This first stretch is just plain ugly. There’s a slight bump on Sunday the 16th, but it’s short-period and chopped up, not worth getting wet for.
After that, it just goes flat. From the 18th through the 25th, it’s weak, small, and crossed-up. Wave heights barely touch 5 feet, and the energy is pathetic, reading in the 150–430 range. Constant cross-shore winds ruin any chance of a clean face. Honestly, it’s a dead period.
But then, things start to wake up around the 27th. The swell direction stays east, but the period jumps into the 17-18 second range, and the energy numbers climb fast into the 1400s and then 1800s. This is real groundswell. By the 29th, we’re looking at wave heights around 6 feet, with energy over 2100, still a long period. Then it really fires up. On the 30th, we’ve got a solid 10-foot pulse of ENE swell with a 14-second period and energy hitting 3854. That’s a serious amount of power.
For the standout, look at H-Reef. With this long-period energy, a reef break like this comes alive. The wave height gets solid, but the key is the quality of the swell. It’s not a beach break closeout; the reef will shape it properly. The optimum direction is NNE, and while we’re getting a more easterly angle, the long period will make it wrap. The main issue is the cross-shore wind, which will put some texture on the surface. But if that wind eases at all when that big swell hits on the 30th, this is the session to be out for. Water temps are about average for this time of year. It’s a fairly consistent spot, but for this size of event, conditions need to line up. And at over 8 feet, this is strictly for experts – beginners shouldn’t even think about it.
So, if you can be patient, the end of the month is the payoff. It’s a long-range forecast, so don’t count on it just yet, but the 29th and 30th have some real potential. Otherwise, it’s a waiting game.
Rusty.
Short Range ForecastHeavy rain (total 87mm), heaviest during Sat night. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Winds decreasing (near gales from the ENE on Sat night, light winds from the E by Sun afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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) | E 12 | E 11 | E 11 | E 10 | E 8 | E 8 | E 8 | E 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 3355 | 4112 | 3889 | 3233 | 1193 | 761 | 504 | 320 | 245 | 196 | 212 | 143 | 200 | 195 | 156 | 119 | 110 | 114 | 169 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross |
High Tide | 4:08AM0.67m | 4:14PM0.81m | 4:55AM0.67m | 4:29PM0.74m | 5:46AM0.67m | 4:38PM0.67m | 6:50AM0.65m | 4:30PM0.61m | 8:31AM0.64m | 11:00AM0.67m | |||||||||
Low Tide | 10:21PM0.22m | 9:53AM0.24m | 10:45PM0.20m | 10:30AM0.34m | 11:10PM0.19m | 11:09AM0.43m | 11:35PM0.20m | 11:55AM0.52m | 00:05AM0.21m | 00:47AM0.23m | 2:05AM0.25m | ||||||||
 |  |  |  | | |  |  | |  | | | | | | | | | | |
 | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 6:55 | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | 7 | 10 | 5 | 48 | 9 | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 24 | 23 | 24 | 20 | 28 | 28 | 28 | 27 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 27 | 29 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | N 8 | W 12 | N 8 | WNW 12 | NW 11 | W 12 | NE 6 | W 12 | NNE 7 | NNE 6 | NNE 7 | NNE 6 | NE 6 | ENE 7 |
| kJ | 10 | 7 | 7 | 7 | 7 | 5 | 11 | 5 | 14 | 5 | 3 | 31 | 12 | 9 | 23 | 38 | 35 | 43 | 169 |
Swell 2 Height (m) Direction Period (s) | — | W 11 | W 11 | W 13 | W 12 | W 12 | N 8 | W 11 | N 8 | N 7 | NW 11 | WNW 13 | NW 11 | W 12 | W 12 | W 11 | ESE 9 | W 18 | ESE 9 |
| kJ | — | 2 | 2 | 14 | 12 | 11 | 5 | 2 | 1 | 1 | 4 | 17 | 4 | 11 | 11 | 10 | 8 | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | — | W 11 | S 21 | W 13 | W 19 | S 16 | W 18 | SE 11 | SE 11 | W 11 | N 7 | N 7 | N 7 | W 17 | W 17 | W 16 | W 11 | W 11 | W 17 |
| kJ | — | 2 | 9 | 14 | 7 | 20 | 6 | 5 | 5 | 2 | 1 | 1 | 1 | 6 | 5 | 5 | 2 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | E 12 | E 11 | E 11 | E 10 | E 8 | E 8 | E 8 | E 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — |
| kJ | 3355 | 4112 | 3889 | 3233 | 1193 | 761 | 504 | 320 | 245 | 196 | 212 | 143 | 200 | 195 | 156 | 119 | 110 | 114 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 132 | 132 | 152 | 113 | 36 | 9 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 9 | 23 | 2 | 2 | 2 | 2 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the H-Reef Surf forecast
The above surf forecast table for H-Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at H-Reef can be found by selecting the local surf guide option on the grey menu. Our H-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 (H-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 H-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.
Are you planning a vacation in Maui? If you are looking for accommodation near H-Reef, camping, hotels and condos and appartments in Maui, consider staying in Kahului which is 8 km (5 miles) away. Other places in and around Maui where you can find information about places to rent, and car hire include Wailuku which is 15 km (9 miles) away, Kihei, Lanai - Lanai and Kaunakakai - Molokai.
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