Surf Forecasts:
H-Reef surf forecast from 11 Aug 2026:
- Most powerful swell: Monday 17 Aug, 2PM (local time) - 11ft (3.5m), 11s period, NE swell with 3,079 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 3.5m 11s and forecast to arrive on Monday (Aug 17) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Monday (Aug 17) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 17th Aug) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for H-Reef over the next 16 days.
The Lowdown
Alright, looking at the charts for H-Reef. It’s a solid reef set-up, exposed to the open ocean, and it usually handles swell better than most spots. But right now, we’re in a bit of a dry spell. The water temp is 80°, which is pretty much normal for this time of year.
The next couple of weeks are looking grim. From Tuesday the 11th right through to the end of Sunday the 16th, we’ve got a run of poor surf conditions. The wind is mostly cross or cross-onshore, blowing at 12 to 19 mph, and the swell is short-period windswell, bouncing between 7 and 9 seconds. The combined energy is weak to moderate — around 249 to 258 on Tuesday, creeping up to 565 on Friday, then jumping to 1127 on Saturday and 1802 by Sunday afternoon. That’s moderate to strong energy, but it’s all windswell, and the wind is ruining it. The waves are messy, lumpy, and have no shape. This is not paddle surfing; this is kite surfing territory if you’re into that.
There’s a bit of a change on Monday the 17th. The swell jumps up to 12 ft from the NE, with a period of 11 seconds, and the wind shifts to a cross-offshore breeze from the ESE at 12 mph. The water is clean, and the combined energy is a massive 2802. That’s strong wave energy, but the conditions are still marginal, with a risk of thunderstorms. For an advanced surfer at H-Reef, this is the only window worth considering. The swell direction is NNE, which is right on the money for this break. But the period is 11 seconds, so it’s not a groundswell, and it might be a bit walled up and fast on the reef. Still, it’s the best you’ll see.
After that, it’s back to tiny, weak, and messy. Tuesday the 18th drops to 4 ft, the energy falls to 213, and it’s all cross-shore wind again. The rest of the run through to Wednesday the 26th is full of 3 ft to 7 ft swells, but the period is short (6 to 8 seconds), the wind is cross or cross-onshore, and the energy stays weak to moderate. Nothing worth paddling out for.
So, to be honest, the only standout in this whole 16-day window is Monday the 17th. It’s not perfect, but the combination of a solid 12 ft NNE swell, cross-offshore wind, and clean water at H-Reef is the best we’ve got. It’s a big day — definitely for experts only — and it’s a bit of a gamble with the storms. But if you’re keen and you know the reef, it’s your shot.
Stay patient, and check the charts closer to the day.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 80mm), heaviest during Sun night. Warm (max 27°C on Fri morning, min 25°C on Fri night). Winds increasing (moderate winds from the ENE on Fri morning, near gales from the E by Sun afternoon). | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
AM | 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) | E 7 | E 7 | E 8 | ENE 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | ENE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | NE 11 | NNE 10 | NNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 243 | 243 | 223 | 220 | 220 | 226 | 266 | 333 | 439 | 560 | 528 | 600 | 1121 | 1540 | 2201 | 1661 | 1796 | 2182 | 2802 | 2089 | 291 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross |
High Tide | 2:30PM1.01m | 1:49AM0.56m | 3:01PM0.99m | 2:37AM0.61m | 3:29PM0.95m | 3:22AM0.64m | 3:53PM0.89m | 4:08AM0.67m | 4:14PM0.81m | 4:55AM0.67m | 4:29PM0.74m | 5:46AM0.67m | 4:38PM0.67m | ||||||||
Low Tide | 9:08PM0.31m | 7:53AM0.03m | 9:32PM0.27m | 8:35AM0.07m | 9:57PM0.24m | 9:15AM0.15m | 10:21PM0.22m | 9:53AM0.24m | 10:45PM0.20m | 10:30AM0.34m | 11:10PM0.19m | 11:09AM0.43m | 11:35PM0.20m | ||||||||
 |  |  | | | | | |  | | |  |  | | |  | |  |  |  | | |
 | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 2 | 6 | 5 | 9 | 50 | 10 | 2 | 5 |
Temp °C | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 26 | 26 | 27 | 26 | 25 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 27 | 27 | 25 | 26 | 27 | 24 | 27 | 26 | 24 | 27 | 26 | 26 | 25 | 27 | 25 | 23 | 24 | 25 | 27 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 7 | NNW 7 | W 13 | W 12 | W 12 | NNW 9 | NNW 8 | NNW 7 | NNW 8 | ESE 13 | NNW 8 | NNW 8 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | NE 11 | NNE 10 | NNW 8 |
| kJ | 12 | 6 | 5 | 5 | 13 | 3 | 3 | 7 | 6 | 5 | 6 | 55 | 6 | 6 | 2201 | 1661 | 1796 | 2182 | 2802 | 2089 | 291 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 13 | W 10 | NW 7 | NW 7 | NW 7 | W 12 | NE 10 | W 12 | W 12 | NNW 8 | W 11 | W 11 | NNW 8 | NNW 9 | NNW 8 | W 11 | W 11 | W 11 | E 8 |
| kJ | 8 | 2 | 13 | 2 | 2 | 2 | 2 | 3 | 4 | 3 | 3 | 6 | 2 | 2 | 6 | 8 | 6 | 10 | 10 | 10 | 165 |
Swell 3 Height (m) Direction Period (s) | E 12 | W 15 | W 19 | W 13 | W 18 | N 10 | NW 9 | NE 11 | W 12 | W 12 | W 18 | W 11 | W 15 | W 14 | W 13 | W 12 | W 12 | SE 12 | SE 11 | SE 11 | W 11 |
| kJ | 3 | 4 | 7 | 3 | 6 | 2 | 3 | 5 | 3 | 3 | 6 | 3 | 4 | 4 | 13 | 12 | 11 | 5 | 5 | 5 | 9 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 8 | ENE 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | ENE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | — | — | — | — | — | S 4 | SW 3 |
| kJ | 243 | 243 | 223 | 220 | 220 | 226 | 266 | 333 | 439 | 560 | 528 | 600 | 1121 | 1540 | — | — | — | — | — | 10 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 23 | 23 | 23 | 25 | 23 | 25 | 25 | 25 | 23 | 25 | 25 | 146 | 151 | 151 | 39 | 93 | 132 | 23 | 23 | 9 |
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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