H-Reef Surf Break

Lat Long: 20.94° N 156.37° W

H-Reef Surf Forecast and Surf Report

Issued: 1 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's H-Reef sea temperature is
26.5° C
0.1° 

H-Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


H-Reef surf forecast from 18 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 8PM (local time) - 3.5ft (1.1m), 7s period, NE swell with glassy winds.
  • Most powerful swell: Monday 24 Aug, 8PM (local time) - 8ft (2.4m), 8s period, E swell with 753 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 3.5ft (1.1m), 7s period with NE 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 Thursday (Aug 20) at 8PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at H-Reef in the next 16 days are 2.4m 8s and forecast to arrive on Monday (Aug 24) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 10s period and expected on Friday (Aug 21) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 20th Aug)3.5ft (1.1m) 7s
Best Surf 8PM (Thu 20th Aug)3.5ft (1.1m) 7s
Most Powerful 8PM (Mon 24th Aug)8ft (2.4m) 8s

Table - best surf conditions forecast for H-Reef over the next 16 days.


The Lowdown

Well, gather round, crew. Rusty here, and I’ve been staring at the charts for our local patch, H-Reef. Let me tell you, it’s a strange, frustrating run we’ve got ahead of us. The ocean’s got plenty of energy, no doubt about that, but the wind just won’t play ball for a proper surf session for ages.

For the first nine days or so, it’s a write-off. The swell is small to moderate, a real mix of east and northeast directions, but the wind is constantly cross or cross-onshore. That’s a recipe for bumpy, chopped-out conditions. The wave comment on the data is clear: “poor surf conditions” all the way from Tuesday, the 18th of August, right through to Wednesday the 27th. That’s a solid ten-day gap of no go. The water temp is sitting pretty at 80°F, about average for this time of year, which is the only nice thing I can say about that period.

Now, from Thursday, the 28th of August, things shift. The swell picks up in a big, serious way. We start seeing combined wave energy into the hundreds and then into the thousands – powerful stuff. The comment changes to “marginal surf forecast or questionable tide conditions,” but there’s still that pesky cross-shore wind. It’s a grind.

If I *had* to point to a true standout, it would be the window around Saturday and Sunday, the 29th and 30th of August. The swell is solid. We’re talking 8ft pumping up to a raw 12ft on the Sunday morning, all from the east with a decent 10-second period. The combined energy is massive – we’re looking at over 2000 (2143) on that Sunday morning. That’s a whole lot of ocean moving.

But – and this is a big but – H-Reef is a reef break that prefers an optimum swell from the north-northeast. This east swell is a bit off that angle, and the wind is still cross-shore. That much power with cross-shore wind on a reef means it’s going to be a bumpy, challenging beast. The wave comment is still "marginal," so don’t expect it to be clean, perfect waves. For the experienced crew who know the reef and are happy to wrestle a bit, that Sunday the 30th will have the size and the grunt, but it’s an expert-only game at 12ft. Beginners, stay well away. It’s too big and messy for you.

Honestly, for the whole 16-day run, there’s no real classic day where everything lines up. The power is there in the second week, especially around the 29th of August through to Monday the 31st of August, with a 10ft swell still hanging around. But the onshore vibes kill the quality. We just have to hope the wind shifts or the forecasts change, because a patch of water with this much raw energy usually finds its way.

Stay patient, keep your eye on the horizon.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue morning, min 24°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sun afternoon. Warm (max 27°C on Fri morning, min 25°C on Fri night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
E
8
1.2
ENE
8
1.2
E
8
1.1
E
8
1
E
8
1
E
8
0.9
E
7
1
NE
7
0.9
NE
7
1.1
E
7
1.2
E
7
1.5
E
7
1.7
E
7
1.7
E
8
1.9
E
9
2
E
9
2
E
10
1.9
E
9
2.1
E
8
2.3
E
8
2.3
E
8
Wave Graph
Metric surfscale
Energy kJ
130
187
205
160
130
124
88
93
65
110
131
205
278
382
562
656
710
562
569
675
692
Wind (km/h)
20
ENE
20
ENE
20
E
15
ENE
15
ENE
15
ENE
10
NNE
5
NNE
5
E
15
E
20
E
20
E
30
E
25
E
30
E
30
ENE
30
ENE
30
E
35
E
35
E
35
E
Wind State
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
4:30PM0.61m
8:31AM0.64m
11:00AM0.67m
12:04PM0.73m
12:39PM0.78m
10:25PM0.40m
1:07PM0.82m
11:49PM0.44m
1:32PM0.86m
00:34AM0.49m
Low Tide
11:55AM0.52m
00:05AM0.21m
00:47AM0.23m
2:05AM0.25m
3:53AM0.24m
9:00PM0.40m
5:08AM0.20m
8:20PM0.39m
5:58AM0.16m
8:20PM0.36m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
rain showers
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:51
6:50
6:50
6:49
6:47
 mm
1
Temp °C
26
26
25
26
26
25
26
26
25
27
27
27
27
27
26
26
26
25
26
26
26
Feels °C
27
27
26
27
28
27
30
30
30
30
29
29
27
27
26
26
26
25
25
25
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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