Surf Forecasts:
Octagon House surf forecast from 13 Sep 2026:
- Most powerful swell: Friday 18 Sep, 10AM (local time) - 4.5ft (1.3m), 7s period, ESE swell with 154 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 1.3m 7s and forecast to arrive on Friday (Sep 18) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Fri 18th Sep) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s have a look at what’s cookin’ for Octagon House over the next couple of weeks. I gotta be straight with you—this is a tough run. We’re looking at a long stretch of small, messy surf with onshore winds. Don’t expect much action for a while.
The pattern kicks off Sunday, September 13th with tiny 2ft swell from the S, period a weak 5 seconds. The combined wave energy is only 21, that’s real weak. Not worth paddling out. Monday and Tuesday stay similar—2ft to 2ft, onshore wind, poor conditions. The energy stays in the teens and low twenties. Wednesday, September 16th, is even smaller, 1ft to 1ft. This is a rough start.
There’s a slight pulse on Thursday, September 17th, with swell bumping to 4ft-5ft from the ESE, period 6 seconds, energy climbing to 115-135. That’s moderate energy now, but the wind is a stiff cross-onshore at 12-16 mph, creating choppy, lumpy conditions. Still no good. Friday morning, September 18th, brings a bit of hope with 4ft swell, period 7 seconds, and energy at 247—moderate energy, feeling it. The wind switches to a light cross-shore from the ENE at 6 mph, which is a big improvement. The wave comment calls it “marginal,” but with clean conditions, it might be the only chance to get wet this week. That said, it’s not a standout.
After that, we drop back into the doldrums. Saturday, September 19th, has glassy conditions in the morning with 2ft swell, but the energy is only 42, and the period is short. Sunday through the following weekend is all small—1ft to 3ft—with onshore or cross-onshore winds. Energy stays under 100 mostly. There’s a clean window on Monday, September 21st, with a light offshore from the NW at 6 mph, but the swell is only 2ft, period 5 seconds. Too small to get excited about.
The only glimmer further out is Saturday, September 26th, when we see swell building to 4ft-5ft from the ESE, period 8-9 seconds, and energy jumping to 196-281. That’s moderate to strong energy, but the wind is a fresh cross-onshore at 16-19 mph, making it lumpy. The wave comment says “poor surf conditions.” Too bad—if the wind had cooperated, that could’ve been something. Sunday, September 27th, keeps the energy high at 312 in the morning, but again, cross-onshore wind ruins it. For an exposed beach break like Octagon House, that combo of strong swell and onshore wind just makes for a choppy, blown-out mess—more interesting for kite surfers than paddle surfers.
Honestly, the best bet in this whole 16-day window is Friday morning, September 18th, when you get clean conditions and a little bit of size. It’s not a standout by any means, but it’s the only time the stars nearly align. Keep an eye on the forecast—things can change.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Warm (max 31°C on Sun morning, min 29°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Tue night, min 28°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | S 5 | S 5 | S 5 | S 5 | SSE 5 | SE 4 | SSE 5 | SSE 5 | SSE 6 | SE 5 | S 6 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | SE 7 | SE 6 | ESE 6 | ESE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 18 | 17 | 18 | 13 | 15 | 16 | 14 | 18 | 26 | 7 | 6 | 52 | 115 | 135 | 97 | 154 | 91 | 44 | 42 | 36 | 24 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | cross-on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross | cross-on | cross-on | glassy | on | cross-on |
High Tide | 5:41AM0.38m | 7:30PM0.42m | 5:44AM0.38m | 8:51PM0.43m | 5:31AM0.39m | 10:21PM0.44m | 00:22AM0.45m | 2:57AM0.46m | 3:47AM0.46m | ||||||||||||
Low Tide | 12:15PM0.13m | 00:52AM0.32m | 12:55PM0.09m | 1:41AM0.37m | 1:37PM0.07m | 2:24PM0.07m | 3:19PM0.08m | 4:24PM0.08m | 5:33PM0.09m | ||||||||||||
 | |  |  | | | | | |  | | | | | | | | | | | | |
 | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — |
 | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — | — | 7:21 | — |
mm | 2 | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 30 | 30 | 28 |
Feels °C | 33 | 32 | 31 | 33 | 33 | 33 | 33 | 32 | 31 | 32 | 31 | 31 | 30 | 28 | 30 | 30 | 31 | 30 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 5 | SE 8 | SE 8 | S 5 | S 6 | — | — | — | — | ESE 7 | — | — | SE 6 | ESE 6 | ESE 6 |
| kJ | 3 | 3 | 3 | 3 | 3 | 3 | 14 | 2 | 3 | 2 | 6 | — | — | — | — | 93 | — | — | 42 | 36 | 24 |
Swell 2 Height (m) Direction Period (s) | — | SE 9 | — | SSW 5 | S 6 | S 10 | SE 9 | S 11 | — | SE 8 | SE 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | 5 | 1 | 2 | 3 | 2 | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 8 | — | — | — | — | — | S 7 | SE 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 5 | S 5 | S 5 | S 5 | SSE 5 | SE 4 | — | SSE 5 | SSE 6 | SE 5 | ESE 3 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | SE 7 | — | — | — |
| kJ | 18 | 17 | 18 | 13 | 15 | 16 | — | 18 | 26 | 7 | 6 | 52 | 115 | 135 | 97 | 154 | 91 | 44 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1296 | 1331 | 1291 | 1291 | 1324 | 1291 | 1296 | 1397 | 1291 | 1296 | 833 | 691 | 1296 | 1334 | 613 | 38 | 613 | 1291 | 25 | 1291 | 1291 |
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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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