Surf Forecasts:
Octagon House surf forecast from 7 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 4AM (local time) - 3ft (0.9m), 5s period, SSE swell with 44 kJ wave energy.
Best Forecast Surf Conditions for Octagon House this week:
The most powerful waves expected at Octagon House in the next 16 days are 0.9m 5s and forecast to arrive on Thursday (Aug 13) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 13th Aug) | 3ft (0.9m) 5s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Grab your board, but maybe don't get too excited just yet. The next couple of weeks are looking pretty flat and messy for the Octagon House (Big Island) stretch. We've got a long stretch of small, weak, and mostly onshore wind swell, so there isn't a single standout day in the whole run. The water is sitting at 86.2°, which is right about average for this time of year.
We're looking at a dry spell that starts now and runs all the way through to the 19th of August. The swell is tiny – we're talking 1.3ft to 3ft – with short, weak periods of 4 to 7 seconds. That's not real surf; that's just chop. The energy is weak too, with combined swell energy values mostly in the low teens to sixties, like (17) or (35), which tells you there's just nothing pushing in. Winds are mostly onshore or cross-onshore from the S and SSE, so it's going to be lumpy and messy. Even the mornings that are a little cleaner are still just too small to bother with. It's all showing as poor surf conditions, so don't rush out.
There's a glimmer on the 20th of August. Thursday morning sees a cross-offshore wind from the WSW, which will clean things up, but the swell is only 1.6ft from the SE at 6 seconds. It's still tiny, but there might be a few crumbly little waves if you're desperate for a splash. Then on Friday the 21st of August, we've got a glassy morning with almost no wind. The swell is still a small 1.6ft from the SE, but it'll be smooth and clean. It's not going to be epic, but for a beginner, it might be the best of a pretty bad bunch. With the swell this small, it won't be dumping, and the south-east direction is exposed for the break, which is something.
Honestly, for the next two weeks, the setup looks more interesting for a kite surfer than a paddle surfer if the wind picks up. We need a serious change in the weather pattern to get any real waves. It tends not to stay this poor for long, so let's hope the forecasts change. But as it stands, don't get your hopes up for any big sessions.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 30°C on Thu afternoon, min 28°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 30°C on Mon morning, min 28°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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) | SSE 5 | SSE 4 | SSE 5 | SSE 5 | SE 4 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 4 | SSE 5 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | SSE 5 | SSE 5 | SSE 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 14 | 21 | 13 | 9 | 10 | 12 | 16 | 19 | 17 | 27 | 21 | 21 | 15 | 24 | 12 | 14 | 19 | 25 | 33 | 42 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:24AM0.39m | 4:05AM0.42m | 4:44AM0.43m | 5:20AM0.43m | 5:49AM0.41m | 1:22PM0.40m | 6:14AM0.39m | 2:48PM0.39m | ||||||||||||
Low Tide | 5:03PM-0.08m | 6:04PM-0.12m | 7:07PM-0.15m | 8:08PM-0.16m | 9:40AM0.40m | 9:05PM-0.16m | 9:41AM0.38m | 9:59PM-0.13m | 10:20AM0.34m | 10:50PM-0.09m | ||||||||||
 |  |  | | |  | | | | | | | | | | | | | | | |
 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — |
 | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — |
mm | 2 | — | — | — | — | 1 | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 30 | 28 | 29 | 29 | 28 | 30 | 30 | 28 | 29 | 29 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 30 | 28 |
Feels °C | 32 | 30 | 33 | 30 | 30 | 32 | 32 | 31 | 32 | 31 | 30 | 32 | 32 | 31 | 32 | 32 | 31 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 7 | SSE 5 | SE 8 | SE 6 | SE 5 | SE 5 | SE 8 | SE 5 | — | — | — | — | SE 9 | SE 8 | SE 10 | SE 10 | SE 9 | SE 7 | S 10 |
| kJ | 3 | 2 | 13 | 3 | 2 | 12 | 16 | 3 | 17 | — | — | — | — | 3 | 3 | 4 | 4 | 3 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | SE 5 | — | SE 8 | S 5 | SE 8 | SE 8 | SE 8 | — | — | — | — | — | ESE 5 | — | SE 10 | SE 7 | SE 10 | — | — | S 10 |
| kJ | 1 | — | 3 | 1 | 3 | 3 | 3 | — | — | — | — | — | 6 | — | 4 | 2 | 4 | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | SE 8 | — | S 5 | S 5 | S 5 | — | — | — | — | — | — | — | SE 9 | — | SE 10 | — | — | — | — | — |
| kJ | 2 | — | 1 | 1 | 1 | — | — | — | — | — | — | — | 3 | — | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 5 | SSE 4 | — | SSE 5 | SE 4 | — | — | SE 5 | — | SE 5 | SE 5 | SE 4 | SSE 5 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | SSE 5 | SSE 5 | SSE 5 |
| kJ | 14 | 21 | — | 9 | 10 | — | — | 19 | — | 27 | 21 | 21 | 15 | 24 | 12 | 14 | 19 | 25 | 33 | 42 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1308 | 1291 | 1296 | 1395 | 1291 | 1296 | 1301 | 1291 | 1296 | 1310 | 1291 | 1296 | 1397 | 1291 | 1295 | 1324 | 1296 | 1296 | 1399 | 1291 |
Best forecast wave conditions in Texas | ||||||||||||||||||||
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Information about the Octagon House Surf forecast
The above surf forecast table for Octagon House provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Octagon House can be found by selecting the local surf guide option on the grey menu. Our Octagon House 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 (Octagon House) 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 Octagon House 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 Texas? If you are looking for accommodation near Octagon House, camping, hotels and condos and appartments in Texas, consider staying in Angleton which is 33 km (20 miles) away. Other places in and around Texas where you can find information about places to rent, and car hire include La Marque which is 33 km (20 miles) away, Lake Jackson, Texas City and Galveston.
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