Surf Forecasts:
Octagon House surf forecast from 11 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 7PM (local time) - 4ft (1.2m), 6s period, ESE swell with 103 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 1.2m 6s and forecast to arrive on Thursday (Sep 17) at 7PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (CDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 17th Sep) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Octagon House over the next 16 days.
The Lowdown
Alright, Rusty here. Let's run through the numbers the other way. Honestly, for Octagon House, this 16-day stretch is a rough one. We’re looking at a long run of small, choppy waves, especially for the first week or so. The water temp is about 87°F on Friday morning, which is a bit warmer than average for this time of year, running about 4°F above normal.
The first bit of action is Friday, September 11, but it's not good. We've got a tiny 2ft swell from the SSW with a weak, short 4-second period. The combined energy is a weak 17, and with a 12 mph cross-shore wind from the SW, it's going to be a choppy, messy mess. That same story plays out through the weekend and into the start of the next week. You're looking at 2ft waves with cross or onshore winds from the SSE and SE. It's a solid 8 to 9 day stretch of poor surf.
Into the second week, it doesn't get much better. By Thursday afternoon, September 17, the swell pushes up to 3ft from the ESE with a 6-second period. The energy climbs to 75, which is the best we'll see, but the wind is still a moderate 16 mph cross-onshore, making it choppy. Even at that size, the quality is poor. For a beginner spot like Octagon House, any swell over 5ft can be intimidating, but luckily it never gets near that. The wind does turn offshore from the NNW on the morning of Saturday, September 19, giving us clean conditions, but the swell has already dropped to just 2ft. A real tease.
From Sunday, September 20, all the way through to Saturday, September 26, the surf flatlines. Swell drops to 0.7ft to 2ft, with periods mostly around 4 to 6 seconds. The combined energy is in the single digits for many sessions. You'll see some clean windows with light offshore breezes from the N and NNE, but there's nothing to ride. The final week is a total gap with no real surf.
Honestly, the cleanest surf is a small window on Saturday morning, September 19, with an offshore NNW breeze and a clean surface, but you're looking at only 2ft of swell. After that, it's flat. This is a time to give your board a rest and wait for a better forecast.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri morning. Warm (max 31°C on Sat morning, min 26°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) | SSW 4 | S 4 | S 4 | S 5 | S 6 | S 6 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSE 4 | SSE 5 | SSE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 6 | ESE 6 | SE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 10 | 10 | 25 | 31 | 24 | 21 | 13 | 20 | 20 | 23 | 22 | 15 | 19 | 27 | 12 | 29 | 40 | 52 | 75 | 91 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | on | on | cross-on | 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 | 10 | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 29 | 31 | 31 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 29 |
Feels °C | 30 | 30 | 31 | 33 | 32 | 31 | 33 | 33 | 31 | 33 | 33 | 32 | 33 | 33 | 32 | 31 | 30 | 30 | 31 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | E 5 | — | SE 8 | SE 8 | SE 8 | SE 10 | SE 9 | SE 9 | ESE 8 | SE 8 | SE 8 | S 10 | SSE 5 | SE 9 | SE 10 | SE 5 | SE 9 | — | — | — | — |
| kJ | 2 | — | 2 | 2 | 2 | 4 | 3 | 3 | 7 | 3 | 3 | 2 | 15 | 3 | 4 | 12 | 3 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | — | SE 10 | S 11 | SE 10 | — | SE 9 | — | SE 8 | SE 8 | — | SE 10 | S 7 | SE 10 | SE 6 | SE 9 | — | — | — | — |
| kJ | 2 | 2 | — | 4 | 2 | 4 | — | 3 | — | 3 | 3 | — | 4 | 1 | 4 | 1 | 12 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 11 | — | SE 9 | SE 8 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 3 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | S 4 | S 4 | S 5 | S 6 | S 6 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSE 4 | — | SSE 5 | SE 5 | — | SE 5 | SE 5 | SE 6 | ESE 6 | SE 7 |
| kJ | 13 | 10 | 10 | 25 | 31 | 24 | 21 | 13 | 20 | 20 | 23 | 22 | — | 19 | 27 | — | 29 | 40 | 52 | 75 | 91 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1296 | 1395 | 1291 | 1296 | 1395 | 1291 | 1296 | 1397 | 1296 | 1296 | 1410 | 1291 | 1296 | 1397 | 1291 | 1296 | 1395 | 1291 | 1296 | 1456 | 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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