Surf Forecasts:
Thunder surf forecast from 4 Sep 2026:
- Most powerful swell: Sunday 6 Sep, 5PM (local time) - 3.5ft (1.0m), 8s period, SE swell with 138 kJ wave energy.
Best Forecast Surf Conditions for Thunder this week:
The most powerful waves expected at Thunder in the next 16 days are 1.0m 8s and forecast to arrive on Sunday (Sep 06) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Thursday (Sep 10) at 8PM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sun 6th Sep) | 3.5ft (1.0m) 8s |
Table - best surf conditions forecast for Thunder over the next 16 days.
The Lowdown
Righto, let’s have a look. Straight up, the outlook for Thunder is a rough stretch. This is a sheltered reef setup that only rarely breaks, so it’s never easy to get it working, and this forecast is a long blank run for any decent surf.
The water temp is 85°, which is about average for the time of year, so that’s one small comfort.
The first bump of swell shows up Friday morning the 4th, but it’s tiny—1 ft from the ESE with a short 8-second period and a weak combined energy of only 26. That’s not going to do much, and cross-off winds over 12 mph are going to mess it up anyway. The Saturday the 5th is similar—2 ft, still ESE, still cross-off wind. It’s all poor surf conditions.
We get a little spike on Sunday afternoon the 6th—a 3 ft SE swell with 8-second period, combined energy climbing to 138—but that’s still onshore-ish and far from clean. Then from Monday the 7th right through to Saturday the 19th, it’s mostly flat, with combined energy values hitting zero for long patches. There are a few tiny 0.7 ft to 2 ft bumps mid-to-late in the second week, but with cross-off winds in the 15-22 mph range, they’re not surfable.
Honestly, there’s nothing here worth paddling out for. This is a classic dry spell for an inconsistent reef. It won’t stay poor forever, but for now, it’s a total write-off. Save the wax for another day.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Sat morning. Warm (max 29°C on Fri morning, min 27°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Wed morning. Warm (max 29°C on Mon morning, min 28°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | E 8 | ESE 8 | SE 8 | ESE 9 | SE 9 | E 7 | ESE 9 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 26 | 27 | 42 | 53 | 53 | 0 | 41 | 138 | 30 | 22 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:25AM0.51m | 8:35PM0.70m | 11:24AM0.51m | 10:06PM0.69m | 12:48PM0.55m | 11:38PM0.72m | 1:37PM0.61m | 00:51AM0.77m | 2:16PM0.67m | 1:50AM0.82m | 2:50PM0.72m | 2:40AM0.85m | 3:21PM0.76m | 3:26AM0.85m | |||||||
Low Tide | 2:01PM0.40m | 4:24AM0.17m | 3:43PM0.43m | 5:49AM0.15m | 5:30PM0.42m | 6:55AM0.12m | 6:46PM0.37m | 7:47AM0.10m | 7:43PM0.31m | 8:31AM0.09m | 8:31PM0.25m | 9:09AM0.11m | 9:15PM0.19m | ||||||||
 | |  |  | |  |  | | | | |  | | | | | | | | | | |
 | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — |
 | — | 6:07 | — | — | 6:06 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:04 | — | — | 6:02 | — |
mm | — | — | — | 1 | — | 1 | — | 1 | 2 | 1 | — | — | — | — | 1 | 3 | — | 3 | — | 3 | 5 |
Temp °C | 29 | 29 | 28 | 29 | 29 | 29 | 28 | 29 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 |
Feels °C | 30 | 31 | 30 | 30 | 30 | 31 | 28 | 30 | 29 | 28 | 28 | 27 | 26 | 29 | 28 | 27 | 28 | 28 | 27 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ENE 8 | ESE 9 | E 8 | E 8 | N 8 | ESE 8 | SE 8 | ESE 9 | SE 9 | NNE 12 | ESE 9 | NNE 10 | NNE 10 | NNE 12 | NNE 9 | NNE 10 | NNE 10 | NNE 11 | NE 11 | N 11 |
| kJ | 26 | 94 | 42 | 142 | 138 | 1 | 41 | 138 | 30 | 22 | 14 | 30 | 58 | 55 | 79 | 58 | 41 | 42 | 44 | 29 | 21 |
Swell 2 Height (m) Direction Period (s) | N 10 | ESE 8 | N 9 | ESE 9 | ESE 9 | — | N 8 | ENE 8 | N 8 | NE 13 | N 7 | NNE 11 | — | N 11 | N 10 | N 9 | N 8 | N 9 | N 13 | N 12 | NNE 10 |
| kJ | 8 | 27 | 2 | 53 | 53 | — | 1 | 85 | 1 | 7 | 1 | 23 | — | 2 | 2 | 6 | 5 | 1 | 13 | 25 | 21 |
Swell 3 Height (m) Direction Period (s) | — | N 10 | — | N 9 | N 9 | — | — | N 8 | — | N 8 | — | NE 14 | — | — | N 10 | — | N 10 | N 12 | N 8 | N 10 | — |
| kJ | — | 8 | — | 2 | 2 | — | — | 1 | — | 1 | — | 8 | — | — | 2 | — | 2 | 3 | 1 | 2 | — |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | E 8 | — | — | E 8 | E 6 | — | E 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 120 | — | 115 | — | — | 230 | 116 | — | 153 | 216 | 261 | 261 | 310 | 319 | 358 | 475 | 476 | 476 | 533 | 526 | 470 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 262 | 8 | 251 | 235 | 185 | 263 | 394 | 322 | 8 | 813 | 638 | 765 | 1007 | 259 | 259 | 259 | 259 | 259 | 251 | 251 | 460 |
Best forecast wave conditions in Barbados | |||||||||||||||||||||
Best forecast wave conditions in Barbados | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Thunder surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Thunder Surf forecast
The above surf forecast table for Thunder provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thunder can be found by selecting the local surf guide option on the grey menu. Our Thunder 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 (Thunder) 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 Thunder 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 holiday in Barbados? If you are looking for accommodation near Thunder, camping, hotels and holiday cottages in Barbados, consider staying in Bridgetown which is 3 km (2 miles) away.
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