
Surf Forecasts:
Bellows surf forecast from 11 Aug 2026:
- Best quality surf: Monday 17 Aug, 5AM (local time) - 11ft (3.5m), 9s period, E swell with cross-onshore winds.
- Most powerful swell: Sunday 16 Aug, 11PM (local time) - 20ft (6.0m), 11s period, E swell with 8,097 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5AM (local time) - 11ft (3.5m), 9s period with E swell.
Best Forecast Surf Conditions for Bellows this week:
The surf forecast for Bellows over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 5AM. The primary swell is predicted to be 3.5m and 9s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Bellows in the next 16 days are 6.0m 11s and forecast to arrive on Sunday (Aug 16) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Thursday (Aug 13) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 17th Aug) | 11ft (3.5m) 9s |
| Best Surf | 5AM (Mon 17th Aug) | 11ft (3.5m) 9s |
| Most Powerful | 11PM (Sun 16th Aug) | 20ft (6.0m) 11s |
Table - best surf conditions forecast for Bellows over the next 16 days.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 49mm), heaviest during Sun morning. Warm (max 27°C on Sun afternoon, min 25°C on Fri night). Winds decreasing (severe gales from the NE on Sat night, moderate winds from the SE by Sun night). | ||||||||||||||||||||
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 | ENE 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 9 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | E 10 | E 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
181 | 160 | 181 | 165 | 160 | 188 | 170 | 195 | 307 | 330 | 414 | 603 | 1845 | 2088 | 3107 | 3556 | 2885 | 3738 | 1018 | 646 | 474 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on |
High Tide | 2:50PM0.74m | 1:43AM0.37m | 3:21PM0.72m | 2:36AM0.40m | 3:49PM0.69m | 3:28AM0.42m | 4:12PM0.63m | 4:22AM0.43m | 4:30PM0.58m | 5:20AM0.44m | 4:40PM0.52m | 6:27AM0.44m | 4:40PM0.47m | ||||||||
Low Tide | 9:16PM0.20m | 7:57AM-0.08m | 9:41PM0.17m | 8:39AM-0.03m | 10:07PM0.14m | 9:20AM0.03m | 10:33PM0.12m | 10:00AM0.11m | 10:59PM0.09m | 10:41AM0.19m | 11:25PM0.08m | 11:25AM0.27m | 11:52PM0.07m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 2 | 5 | 26 | 6 | 7 | 1 | 2 | — |
Temp °C | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 25 |
Feels °C | 26 | 25 | 23 | 23 | 22 | 25 | 24 | 24 | 23 | 23 | 23 | 22 | 24 | 23 | 21 | 23 | 25 | 26 | 27 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | E 12 | S 13 | S 13 | S 14 | S 16 | S 13 | S 13 | S 14 | SSE 7 | S 13 |
42 | 40 | 62 | 155 | 152 | 257 | 183 | 161 | 159 | 106 | 106 | 96 | 55 | 54 | 62 | 84 | 30 | 56 | 103 | 40 | 55 | |
Swell 2 Height (m) Direction Period (s) | NNW 8 | NNW 7 | S 20 | SSW 13 | SSW 13 | NW 7 | NNW 8 | NNW 8 | NNW 7 | ESE 10 | NNW 8 | S 14 | NNW 8 | NNW 8 | NNW 8 | S 19 | S 16 | S 16 | SW 18 | S 14 | SSE 6 |
11 | 5 | 119 | 55 | 55 | 2 | 7 | 6 | 5 | 34 | 6 | 97 | 13 | 13 | 13 | 7 | 46 | 45 | 12 | 65 | 12 | |
Swell 3 Height (m) Direction Period (s) | S 11 | SSE 9 | NNW 7 | NNW 7 | NNW 7 | SE 9 | S 9 | S 9 | NE 11 | NNW 8 | S 11 | NNW 9 | S 20 | S 16 | S 18 | NNW 8 | W 12 | SW 14 | W 12 | SW 19 | S 19 |
10 | 8 | 5 | 5 | 5 | 3 | 2 | 2 | 4 | 6 | 2 | 7 | 7 | 5 | 25 | 13 | 3 | 8 | 3 | 15 | 7 | |
Wind waves Height (m) Direction Period (s) | E 7 | ENE 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 9 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | E 10 | E 8 | ENE 8 | ENE 8 |
181 | 160 | 181 | 165 | 160 | 188 | 170 | 195 | 307 | 330 | 414 | 603 | 1845 | 2088 | 3107 | 3556 | 2885 | 3738 | 1018 | 646 | 474 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 43 | 43 | 43 | 43 | 49 | 43 | 43 | 117 | 43 | 54 | 120 | 156 | 210 | 211 | 141 | 117 | 116 | 49 | 49 | 43 | 43 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Bellows Surf forecast
The above surf forecast table for Bellows provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bellows can be found by selecting the local surf guide option on the grey menu. Our Bellows 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 (Bellows) 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 Bellows 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.
Bellows is 6 km (4 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.











