Surf Forecasts:
Octagon House surf forecast from 18 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 1AM (local time) - 3.5ft (1.0m), 5s period, S swell with 45 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 Sunday (Aug 23) 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 0.6m 5s period and expected on Sunday (Aug 23) at 7AM.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sun 23rd Aug) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Alright, let me break this down for you. Honestly, for the next couple of weeks, Octagon House isn't giving us much to get excited about. It's a real flat spell. We're looking at a long stretch of tiny, weak waves and poor conditions, so don't be in a rush to grab your board.
For the first week, from Monday the 17th of August right through to the end of the month, it's a total write-off. The swell is tiny, barely pushing 2ft most days, and it's coming from the S or SSE. The problem is the wind. It's mostly cross or cross-onshore, and often howling at 12 to 19 mph, which is going to chop up that nothing swell into a complete mess. The combined swell energy is pitiful, mostly in the teens and twenties. There's just nothing to ride. You'll be staring at a glassy, flat ocean on the morning of the 27th, but with no swell to back it up.
The only glimmer of hope, and it's a very faint one, shows up on Friday the 28th of August. The morning session sees a tiny bump of energy, with the swell climbing to 4ft from the SE, stirred up by a light NE wind that's blowing cross-offshore. The combined energy jumps to 156 (moderate), which is the most we'll see. The water temp is a touch warmer than normal at 87°. It's a clean-looking morning, but that swell is short-period at 7 seconds, so it'll lack punch. By the afternoon, the wind swings onshore and ruins it.
Honestly, if you're an absolute beginner and just want to float around in clean water, that Friday morning might be your only window. The 4ft swell is small enough for a learner, but it's hardly a wave you'd paddle for. For anyone else, this whole forecast is a dud.
That's it from me. Keep an eye on the horizon, but don't hold your breath.
- Rusty
Short Range ForecastMostly dry. Warm (max 30°C on Mon morning, min 27°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat night. Warm (max 31°C on Thu morning, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | SE 6 | SE 5 | S 4 | SSE 8 | SE 9 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 5 | S 5 | S 5 | S 5 | SSW 4 | S 5 | S 5 | SSW 5 | SSW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 10 | 7 | 6 | 13 | 13 | 13 | 13 | 15 | 18 | 14 | 21 | 16 | 21 | 27 | 22 | 34 | 45 | 25 | 29 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross | cross-on | cross-on | cross |
High Tide | 10:35PM0.33m | 7:24AM0.33m | 1:12AM0.36m | 3:11AM0.39m | 4:01AM0.41m | 4:44AM0.41m | 5:18AM0.41m | ||||||||||||||
Low Tide | 2:46PM0.07m | 2:42AM0.30m | 3:39PM0.03m | 4:33PM0.01m | 5:29PM-0.00m | 6:25PM-0.01m | 7:17PM-0.01m | 8:05PM-0.02m | |||||||||||||
 | |  |  | | | | | | | | | | | | | |  | | | | |
 | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — |
Temp °C | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 31 | 30 | 29 | 30 | 30 | 28 | 31 | 30 | 28 | 30 | 30 | 28 |
Feels °C | 33 | 31 | 30 | 32 | 32 | 30 | 31 | 30 | 30 | 33 | 30 | 31 | 32 | 30 | 29 | 32 | 30 | 29 | 33 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 6 | SE 9 | SE 5 | SE 5 | SE 9 | SE 6 | ESE 7 | SE 7 | ESE 6 | ESE 5 | ESE 5 | SE 6 | S 5 | SE 8 | SSE 6 | — | — | — | S 5 | SE 8 | NNE 3 |
| kJ | 15 | 3 | 4 | 4 | 13 | 2 | 5 | 7 | 3 | 3 | 3 | 6 | 16 | 2 | 4 | — | — | — | 25 | 2 | 1 |
Swell 2 Height (m) Direction Period (s) | — | SE 9 | SE 9 | SSE 8 | SE 5 | SE 9 | — | — | S 10 | SE 9 | SE 8 | SE 8 | SE 8 | — | — | SE 7 | — | — | SE 7 | S 6 | E 3 |
| kJ | — | 3 | 3 | 6 | 1 | 3 | — | — | 2 | 3 | 3 | 3 | 2 | — | — | 2 | — | — | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 10 | S 6 | — | — | — | S 10 | — | SE 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 4 | 1 | — | — | — | 2 | — | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SE 5 | S 4 | SSW 4 | S 3 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | S 4 | — | S 5 | S 5 | S 5 | SSW 4 | S 5 | SW 5 | SSW 5 | SSW 4 |
| kJ | — | 10 | 7 | 5 | 5 | 13 | 13 | 13 | 15 | 18 | 14 | 21 | — | 21 | 27 | 22 | 34 | 45 | 10 | 29 | 23 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1296 | 1301 | 1291 | 1296 | 1331 | 1291 | 1296 | 1341 | 1291 | 1296 | 1422 | 1291 | 1296 | 1395 | 1296 | 1291 | 1306 | 1291 | 1296 | 1346 | 1291 |
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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