Surf Forecasts:
Octagon House surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 25 Aug, 1AM (local time) - 3.5ft (1.0m), 5s period, SSW swell with 40 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 1.0m 5s and forecast to arrive on Tuesday (Aug 25) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Sunday (Aug 23) at 4AM.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Tue 25th Aug) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’ve got a look at what’s coming up for Octagon House (Octagon). Gotta be straight with you – the whole 16-day window is pretty much a bust.
Right now, there’s just nothing doing. The water is sitting at 87°, a touch warmer than normal for this time of year, but that’s about the only highlight. From Tuesday the 18th all the way through to Wednesday the 2nd of September, every single session is rated as poor surf conditions. There’s no day where it’s even worth paddling out.
We’re looking at tiny swell for the entire run – heights mostly hanging around 0.7ft to 3ft, with the biggest bump being a weak 4ft on the afternoon of Tuesday the 25th of August. That one comes with a fresh cross-onshore wind (19 mph) and lumpy conditions, so it’s not going to be any fun. The swell energy is weak the whole way through, with the highest reading being just 75 (combined energy of all swells directed here) on that same Tuesday afternoon. Most of the time, we’re in the teens or single digits. The period is short, mostly 4 to 5 seconds, so there’s no real push or shape.
The wind is frequently cross-on or cross, and often moderate to fresh, which keeps the surface choppy and messy. A few mornings – like Saturday the 22nd, Sunday the 23rd, Monday the 24th, and Tuesday the 25th of August – have a clean cross-off breeze, but the swell is just too small and weak to make anything of it. The best we see is a 2ft to 3ft SSW swell with a 5-second period.
Honestly, the only thing going for Octagon House is that it’s fairly consistent and exposed, so it doesn’t tend to stay flat for long. But in this 16-day stretch, there’s no standout. If you’re a kite surfer, the stronger afternoon winds on days like the 25th of August (19 mph) and the 29th of August (19 mph) might be more interesting than trying to paddle. For the rest of us, it’s a long wait.
Rusty
Short Range ForecastMostly dry. Warm (max 30°C on Tue morning, min 28°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 31°C on Fri morning, min 27°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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 8 | SE 9 | S 4 | S 4 | S 4 | S 4 | SW 5 | S 4 | S 4 | SW 4 | S 4 | S 4 | S 5 | S 4 | SSW 4 | S 5 | SSW 4 | SSW 4 | SW 5 | SSW 4 | SSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 13 | 9 | 13 | 18 | 21 | 9 | 9 | 15 | 5 | 14 | 18 | 12 | 18 | 19 | 13 | 17 | 18 | 22 | 20 | 40 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross |
High Tide | 1:12AM0.36m | 3:11AM0.39m | 4:01AM0.41m | 4:44AM0.41m | 5:18AM0.41m | 5:36AM0.40m | |||||||||||||||
Low Tide | 3:39PM0.03m | 4:33PM0.01m | 5:29PM-0.00m | 6:25PM-0.01m | 7:17PM-0.01m | 8:05PM-0.02m | 8:45PM-0.01m | ||||||||||||||
 |  |  | | | | | | | | |  |  | | | | | | | | | |
 | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 30 | 29 | 31 | 30 | 28 | 29 | 29 | 28 | 31 | 31 | 28 | 31 | 31 | 29 |
Feels °C | 32 | 31 | 30 | 31 | 30 | 29 | 32 | 31 | 32 | 33 | 31 | 30 | 32 | 31 | 30 | 33 | 33 | 30 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 5 | ESE 5 | ESE 6 | SE 7 | SE 7 | SE 6 | S 4 | ESE 5 | SE 6 | SSE 4 | SE 5 | SE 7 | S 5 | SE 8 | SSE 7 | S 5 | SE 8 | — | SSW 5 | SE 8 | SE 8 |
| kJ | 4 | 2 | 4 | 9 | 7 | 5 | 9 | 3 | 2 | 4 | 1 | 2 | 10 | 2 | 4 | 11 | 2 | — | 17 | 2 | 3 |
Swell 2 Height (m) Direction Period (s) | S 4 | SE 9 | SE 9 | — | — | S 10 | ESE 5 | SE 8 | — | SE 5 | SE 7 | — | SE 6 | SE 8 | SE 7 | SE 6 | SE 8 | SE 8 | SE 6 | S 9 | — |
| kJ | 2 | 13 | 3 | — | — | 2 | 3 | 3 | — | 4 | 2 | — | 1 | 2 | 2 | 1 | 2 | 2 | 1 | 2 | — |
Swell 3 Height (m) Direction Period (s) | SSE 8 | S 6 | — | — | — | — | SE 9 | SE 6 | — | SE 8 | — | — | — | — | — | — | S 6 | — | SE 9 | S 9 | — |
| kJ | 6 | 1 | — | — | — | — | 3 | 2 | — | 2 | — | — | — | — | — | — | 1 | — | 3 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | S 3 | S 4 | S 4 | S 4 | S 4 | SW 5 | S 4 | S 4 | SW 4 | S 4 | S 4 | SSW 4 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SW 5 | SSW 4 | SSW 5 |
| kJ | — | 4 | 9 | 13 | 18 | 21 | 5 | 9 | 15 | 5 | 14 | 18 | 12 | 18 | 19 | 13 | 17 | 18 | 22 | 20 | 40 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1296 | 1334 | 1291 | 1296 | 1397 | 1291 | 1296 | 1334 | 1291 | 1295 | 1303 | 1291 | 1296 | 1346 | 786 | 833 | 1395 | 1236 | 1296 | 1456 | 1296 |
Best forecast wave conditions in Texas | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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