Surf Forecasts:
Octagon House surf forecast from 11 Sep 2026:
- Best quality surf: Friday 18 Sep, 4AM (local time) - 3.5ft (1.1m), 7s period, SE swell with glassy winds.
- Most powerful swell: Friday 18 Sep, 10AM (local time) - 3.5ft (1.1m), 7s period, ESE swell with 105 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 4AM (local time) - 3.5ft (1.1m), 7s period with SE swell.
Best Forecast Surf Conditions for Octagon House this week:
The surf forecast for Octagon House over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 4AM. The primary swell is predicted to be 1.1m and 7s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Octagon House in the next 16 days are 1.1m 7s and forecast to arrive on Friday (Sep 18) at 10AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 18th Sep) | 3.5ft (1.1m) 7s |
| Best Surf | 4AM (Fri 18th Sep) | 3.5ft (1.1m) 7s |
| Most Powerful | 10AM (Fri 18th Sep) | 3.5ft (1.1m) 7s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Alright, let me level with you. This 16-day window for Octagon House is a rough one. We’re lookin’ at a real long stretch of poor surf—from Friday the 11th of September all the way through to Thursday the 24th. That’s nearly two weeks with nothin’ worth paddlin’ for. The swell is tiny, the period is short, and the wind is mostly cross or onshore messin’ things up.
The one bright spot? Friday morning, September 18th. That morning at Octagon House (Big Island) goes glassy. Light NNW wind at just 3 mph—clean, no chop. Swell is small, about 4ft from the ESE, with a short 7-second period. Combined energy is moderate (105). Water temp is around 87°, which is a touch warmer than normal for this time of year. It’s not gonna be epic, but it’s the only time in this whole outlook where you’ll get a shot at a few clean waves. This spot is fairly consistent, though the swell direction ain’t quite its ideal SE, so temper expectations.
After that Friday morning, it’s back to flat and choppy junk. Honestly, this stretch might be better suited for kite surfing than paddle surfing. Keep the faith—forecasts can change.
Rusty
Short Range ForecastModerate rain (total 12mm), heaviest on Fri morning. Warm (max 31°C on Sat morning, min 28°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Mon morning, min 28°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 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) | S 4 | SW 4 | S 4 | S 5 | S 6 | S 6 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 5 | SSE 5 | SE 6 | SE 5 | ESE 5 | SE 5 | ESE 6 | ESE 6 | SE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 21 | 14 | 18 | 23 | 24 | 14 | 13 | 20 | 21 | 24 | 33 | 17 | 18 | 24 | 10 | 15 | 32 | 63 | 96 | 103 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 4:57PM0.42m | 5:31AM0.38m | 6:13PM0.42m | 5:41AM0.38m | 7:30PM0.42m | 5:44AM0.38m | 8:51PM0.43m | 5:31AM0.39m | 10:21PM0.44m | 00:22AM0.45m | 2:57AM0.46m | ||||||||||
Low Tide | 10:54AM0.23m | 11:25PM0.18m | 11:35AM0.18m | 00:08AM0.25m | 12:15PM0.13m | 00:52AM0.32m | 12:55PM0.09m | 1:41AM0.37m | 1:37PM0.07m | 2:24PM0.07m | 3:19PM0.08m | ||||||||||
 |  |  | | | | | | | | | | | | | |  | | | | | |
 | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — |
 | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — |
mm | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 29 | 29 | 31 | 31 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 29 |
Feels °C | 31 | 31 | 31 | 33 | 33 | 31 | 33 | 33 | 32 | 33 | 33 | 31 | 33 | 32 | 32 | 31 | 31 | 30 | 32 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | E 5 | SSW 4 | SE 8 | SE 8 | SE 8 | SE 10 | SE 9 | SE 9 | SE 8 | SE 8 | SSE 7 | S 10 | SE 10 | SSE 7 | SE 8 | SE 6 | S 5 | SE 9 | SE 9 | — | — |
| kJ | 2 | 16 | 2 | 2 | 2 | 4 | 3 | 3 | 3 | 3 | 5 | 2 | 4 | 5 | 3 | 1 | 5 | 3 | 3 | — | — |
Swell 2 Height (m) Direction Period (s) | SE 8 | — | — | SE 10 | S 11 | SE 10 | SE 9 | SE 9 | SE 8 | — | — | — | SE 10 | SE 9 | SE 10 | SE 8 | SE 9 | — | — | — | — |
| kJ | 2 | — | — | 4 | 2 | 4 | 3 | 3 | 11 | — | — | — | 4 | 3 | 4 | 2 | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SE 8 | — | — | — | — | — | — | — | — | — | — | — | S 11 | — | S 7 | — | — | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 4 | SW 4 | S 4 | S 5 | S 6 | S 6 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 5 | SSE 5 | SE 6 | SE 5 | ESE 5 | SE 5 | ESE 6 | ESE 6 | SE 7 |
| kJ | 12 | 21 | 14 | 18 | 23 | 24 | 14 | 13 | 20 | 21 | 24 | 33 | 17 | 18 | 24 | 10 | 15 | 32 | 63 | 96 | 103 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1296 | 1331 | 1291 | 1296 | 1331 | 1291 | 1296 | 1303 | 1291 | 1291 | 1331 | 1291 | 1296 | 1397 | 1291 | 1296 | 1399 | 1291 | 691 | 1371 | 613 |
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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