Surf Forecasts:
H-Reef surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 5AM (local time) - 2ft (0.6m), 7s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 5PM (local time) - 6ft (1.9m), 10s period, E swell with 654 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 2ft (0.6m), 7s period with ENE swell.
Best Forecast Surf Conditions for H-Reef this week:
The surf forecast for H-Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 5AM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.6m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at H-Reef in the next 16 days are 1.9m 10s and forecast to arrive on Sunday (Aug 23) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Aug 21) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 21st Aug) | 2ft (0.6m) 7s |
| Best Surf | 5AM (Fri 21st Aug) | 2ft (0.6m) 7s |
| Most Powerful | 5PM (Sun 23rd Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for H-Reef over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let's chew on what's coming down the pipe for H-Reef these next couple of weeks. I'll level with you, the first ten days or so are a total wash. The wind is just stuck out of the east, blowing cross-shore and making a mess of things. The combined energy in the water gets up to a moderate 361 on the afternoon of the 22nd, but with that wind, the waves are just choppy junk. So for about a week and a half, don't bother putting the board on the car.
Around the end of the month, the swell starts to show some real teeth. On the 30th of August, the combined energy jumps to a strong 1408 with the swell hitting 2 feet out of the ENE. The period is a solid 14 seconds, so it's a proper groundswell. But the wind is still a cross-shore at 12 mph, so the quality is just called marginal. It's a tease, a promise of what's to come.
The session that's got me stoked, the only true standout, is the morning of Thursday, September 3rd. We've got a 1 foot swell from the ENE and the wind is forecast to go glassy. Dead flat. That's the ticket. The swell period is a short 8 seconds, so it's a windswell, but with conditions that clean, you'll be getting some beautiful, smooth waves. The water is sitting at a warm 80°, so trunks and a rash guard will do. That morning is the one you want.
The next morning, Friday the 4th, has a bit more size at 2 feet from the ENE, but the wind goes cross-shore at 9 mph, which takes the shine off it. It's still probably a fun session, but nothing like that glassy Thursday.
Remember, H-Reef is an advanced reef break, so it's no place for the faint of heart. The swell is coming from the east, but the break works best with swell from the north-northeast, so it's not a perfect angle, but that clean, glassy wind on the 3rd is too good to pass up. That's your window, right there.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Fri morning, min 25°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon afternoon. Warm (max 27°C on Sun afternoon, min 25°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | NE 7 | NE 7 | E 8 | E 8 | E 8 | E 7 | E 7 | E 8 | E 8 | E 9 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 91 | 119 | 66 | 135 | 167 | 188 | 302 | 354 | 476 | 580 | 654 | 601 | 492 | 450 | 477 | 418 | 323 | 206 | 191 | 215 | 147 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 11:00AM0.67m | 12:04PM0.73m | 12:39PM0.78m | 10:25PM0.40m | 1:07PM0.82m | 11:49PM0.44m | 1:32PM0.86m | 00:34AM0.49m | 1:55PM0.89m | 1:12AM0.54m | 2:17PM0.90m | 1:49AM0.59m | |||||||||
Low Tide | 2:05AM0.25m | 3:53AM0.24m | 9:00PM0.40m | 5:08AM0.20m | 8:20PM0.39m | 5:58AM0.16m | 8:20PM0.36m | 6:37AM0.12m | 8:30PM0.33m | 7:13AM0.11m | 8:44PM0.30m | ||||||||||
 | |  | | | | |  | | | | | |  |  | | |  | |  | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | 2 | — | — | — | — |
Temp °C | 26 | 26 | 26 | 28 | 28 | 27 | 27 | 27 | 25 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 30 | 30 | 30 | 30 | 29 | 28 | 27 | 27 | 24 | 26 | 27 | 26 | 26 | 27 | 27 | 27 | 26 | 25 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 6 | W 10 | W 10 | WNW 11 | NNE 6 | WNW 11 | WNW 11 | NW 12 | NW 12 | NW 11 | NW 10 | WNW 10 | NW 11 | NW 10 | NW 10 | SE 9 |
| kJ | 91 | 119 | 40 | 26 | 26 | 14 | 8 | 8 | 25 | 22 | 48 | 47 | 34 | 35 | 30 | 16 | 10 | 19 | 16 | 16 | 21 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | W 11 | W 11 | W 10 | W 16 | NW 13 | WNW 14 | WNW 12 | W 16 | N 8 | W 9 | W 9 | W 17 | W 12 | W 12 | W 11 | NE 9 | ESE 10 | NW 10 |
| kJ | 72 | 29 | 66 | 9 | 21 | 17 | 5 | 7 | 18 | 56 | 5 | 1 | 2 | 2 | 6 | 3 | 3 | 2 | 3 | 9 | 16 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ENE 7 | W 17 | W 17 | W 16 | N 8 | W 16 | W 16 | W 16 | SW 15 | S 20 | W 18 | W 18 | W 13 | W 16 | N 8 | N 7 | W 11 | N 7 | NE 8 |
| kJ | 8 | 8 | 18 | 23 | 5 | 5 | 1 | 5 | 5 | 5 | 8 | 7 | 6 | 6 | 3 | 5 | 1 | 1 | 2 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | ESE 3 | E 8 | E 8 | E 7 | E 7 | E 8 | E 8 | E 9 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 |
| kJ | — | — | 1 | 135 | 167 | 188 | 302 | 354 | 476 | 580 | 654 | 601 | 492 | 450 | 477 | 418 | 323 | 206 | 191 | 215 | 147 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 2 | 2 | 9 | 23 | 9 | 23 | 25 | 23 | 23 | 25 | 23 | 23 | 23 | 23 | 23 | 25 | 23 | 23 | 23 | 23 |
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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