
Surf Forecasts:
Thunder surf forecast from 13 Sep 2026:
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 3ft (0.9m), 8s period, ESE swell with 94 kJ wave energy.
Best Forecast Surf Conditions for Thunder this week:
The most powerful waves expected at Thunder in the next 16 days are 0.9m 8s and forecast to arrive on Sunday (Sep 20) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Thursday (Sep 17) at 5PM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 20th Sep) | 3ft (0.9m) 8s |
Table - best surf conditions forecast for Thunder over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
Honestly, it’s a pretty grim stretch ahead. We’ve got a long, long gap of poor to no surf before anything even starts to look half decent. The first real chance of a wave doesn’t show up until Tuesday the 22nd of September, so that’s over a week of flat or junky conditions to sit through.
The water at Thunder is sitting at a warm 85°, which is about normal for this time of year, so at least you’ll be comfortable while you’re waiting.
Let’s talk about the only period that offers anything. Tuesday the 22nd of September, we finally see a pulse of swell arrive. It’s not huge, coming in around 4 ft from the ESE with a short period of 8 seconds. The combined wave energy is moderate, sitting in the 140s (146-149). The wind on Tuesday morning is a gentle cross-offshore breeze from the ESE, which will keep things clean, and by the afternoon it goes light cross-shore. For this break, that’s the best we’re going to get. The break itself is a sheltered reef that rarely breaks and is for intermediate surfers, so don’t expect a circus.
This is the one and only standout in the whole 16-day run. It’s not epic, but it’s the only window with rideable waves and workable wind. Keep in mind, the swell direction is ESE, but Thunder’s optimum is ENE, so it’s a bit of a compromise. Still, if you’re desperate for a paddle, that Tuesday is your day.
The rest of the forecast is either flat, or so small and wind-affected it’s not worth a second look. From the 13th through the 21st, and again from the 23rd onward, the swell energy is either zero or below 100, with persistent cross-off winds. There’s a tiny spike on the 27th and 28th with some 1 ft to 2 ft swell, but it’s still weak and short-period, with those same cross-off winds. Not worth getting wet for.
So, to sum it up: wait it out until Tuesday the 22nd of September. That’s your best – and pretty much only – chance for a surf.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun night. Warm (max 28°C on Sun morning, min 27°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed afternoon. Warm (max 29°C on Fri afternoon, min 27°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
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) | ESE 8 | ESE 8 | ESE 8 | SE 8 | ESE 7 | SE 8 | ESE 8 | ESE 8 | SE 12 | ESE 9 | ESE 9 | SE 8 | ESE 8 | ESE 8 | E 7 | E 7 | ESE 9 | E 7 | E 7 | NNW 10 | ESE 8 |
Wave Graph | |||||||||||||||||||||
44 | 46 | 43 | 57 | 64 | 70 | 82 | 45 | 35 | 55 | 52 | 35 | 26 | 7 | 0 | 0 | 29 | 0 | 0 | 9 | 84 | |
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 | 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 | 4:51PM0.79m | 5:31AM0.71m | 5:20PM0.77m | 6:12AM0.64m | 5:50PM0.74m | 6:56AM0.56m | 6:22PM0.69m | 7:50AM0.50m | 6:58PM0.65m | 9:17AM0.46m | 7:50PM0.61m | 11:58AM0.46m | 9:15PM0.58m | ||||||||
Low Tide | 10:47AM0.22m | 11:16PM0.12m | 11:16AM0.26m | 11:56PM0.13m | 11:43AM0.30m | 00:39AM0.16m | 12:09PM0.34m | 1:28AM0.19m | 12:35PM0.38m | 2:32AM0.23m | 1:09PM0.42m | 3:59AM0.25m | 2:42PM0.45m | ||||||||
5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | |
— | 6:00 | — | — | 6:00 | — | — | 5:59 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:55 | — | |
mm | 1 | 1 | 14 | 1 | — | — | — | 1 | 4 | — | 1 | 3 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 29 | 28 |
Feels °C | 28 | 29 | 28 | 28 | 28 | 27 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 28 | 26 | 29 | 30 | 28 | 29 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | E 7 | SE 8 | ESE 7 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | SE 8 | ESE 8 | N 13 | NNE 12 | NNE 12 | E 7 | NNE 11 | NNE 12 | N 10 | ESE 8 |
44 | 46 | 146 | 57 | 64 | 70 | 82 | 45 | 27 | 55 | 52 | 35 | 26 | 14 | 30 | 29 | 113 | 25 | 26 | 8 | 84 | |
Swell 2 Height (m) Direction Period (s) | N 8 | N 7 | ESE 8 | ESE 13 | ESE 13 | ENE 8 | SE 12 | ESE 12 | SE 12 | N 10 | ESE 11 | ESE 11 | ESE 11 | N 10 | N 9 | N 8 | ESE 9 | N 8 | N 10 | NNW 10 | ENE 8 |
5 | 4 | 43 | 16 | 16 | 14 | 36 | 14 | 35 | 7 | 12 | 12 | 12 | 2 | 2 | 1 | 29 | 1 | 2 | 9 | 6 | |
Swell 3 Height (m) Direction Period (s) | NNE 11 | ESE 14 | ESE 13 | N 10 | NNE 12 | SE 13 | NNE 10 | NNE 10 | NNE 10 | N 16 | N 10 | N 15 | N 13 | ESE 8 | N 9 | N 8 | NNE 12 | — | N 7 | N 12 | NNW 9 |
11 | 18 | 16 | 7 | 13 | 41 | 22 | 11 | 9 | 5 | 8 | 4 | 14 | 7 | 2 | 1 | 28 | — | 1 | 12 | 16 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | E 7 | — | E 8 | ENE 8 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 7 | E 8 | E 7 | E 8 | E 8 | E 7 | E 7 | — | E 7 | E 7 | E 8 | ENE 6 |
180 | 181 | — | 177 | 159 | 66 | 69 | 80 | 102 | 134 | 163 | 279 | 283 | 328 | 275 | 173 | — | 120 | 109 | 121 | 30 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 251 | 235 | 251 | 251 | 8 | 8 | 848 | 8 | 27 | 313 | 235 | 313 | 848 | 848 | 765 | 259 | 251 | 263 | 27 | 27 | 8 |
Best forecast wave conditions in Barbados | |||||||||||||||||||||
Best forecast wave conditions in Barbados | |||||||||||||||||||||
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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.










