Surf Forecasts:
Thunder surf forecast from 17 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 3ft (0.9m), 8s period, SE swell with 115 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 Tuesday (Aug 18) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 8s period and expected on Monday (Aug 17) at 8AM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Tue 18th Aug) | 3ft (0.9m) 8s |
Table - best surf conditions forecast for Thunder over the next 16 days.
The Lowdown
Right, grab a seat, this is a tough one. There’s bugger all on the table for the next 16 days, so I’m just going to tell you straight. The forecast is a long, flat spell with barely a pulse.
Looking at the whole run, from Monday the 17th of August all the way through to Tuesday the 1st of September, the numbers just don’t stack up. We’re looking at a solid 16-day stretch with no real surf to get excited about. The swell energy is barely a whisper – we’re talking values like 18, 17, and even 0 at times. The combined energy of all swells directed here is weak, often in the single or low double digits. It’s a desert.
The only spot in the mix is Thunder. It’s a reef break, but it rarely breaks, and this run shows why. The waves are tiny, never getting above 3 ft, with periods mostly around 8 seconds – short-period, weak stuff. The wind is a constant cross-off from the east, which at least keeps the water surface clean, but with waves that small, it doesn’t matter. The water temperature is a warm 84°F, which is about normal for the time of year, but you’ll be doing more sunbaking than surfing.
Even on the days that look a tiny bit better, like Wednesday the 19th with a 3 ft swell from the SE, or late August with a 3 ft reading, it’s still listed as “poor surf conditions.” The score is a flat zero every time. There’s a brief moment on Monday the 24th where the wind turns offshore from the NE, but the swell is still only 2 ft. It’s a tease.
Honestly, for an area that’s this inconsistent, this blank run isn’t a surprise. It’s one of those periods where you don’t even bother checking the forecast. The setup looks more interesting for kite surfing than paddle surfing, given the consistent breeze. Just wait it out; forecasts can change, but right now, there’s nothing to chase.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Mon afternoon. Warm (max 28°C on Mon morning, min 27°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat afternoon. Warm (max 28°C on Thu morning, min 26°C on Thu 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 8 | SE 8 | ESE 8 | SE 8 | SE 14 | SE 7 | SE 7 | SE 7 | SE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 10 | ESE 9 | ESE 9 | SE 8 | SE 8 | ESE 9 | ESE 9 | SE 8 | SE 8 |
Wave Graph | |||||||||||||||||||||
18 | 17 | 28 | 17 | 8 | 65 | 67 | 69 | 93 | 55 | 76 | 62 | 85 | 56 | 52 | 35 | 35 | 53 | 29 | 35 | 35 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | 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 | off |
High Tide | 6:43PM0.74m | 7:28AM0.59m | 7:18PM0.70m | 8:28AM0.52m | 7:58PM0.66m | 10:01AM0.46m | 8:53PM0.62m | 12:17PM0.46m | 10:11PM0.61m | 1:31PM0.49m | 11:36PM0.62m | 2:06PM0.52m | 00:41AM0.65m | ||||||||
Low Tide | 12:30PM0.28m | 1:20AM0.21m | 1:00PM0.33m | 2:17AM0.23m | 1:32PM0.37m | 3:27AM0.24m | 2:14PM0.41m | 4:51AM0.24m | 3:35PM0.44m | 6:09AM0.22m | 5:22PM0.44m | 7:06AM0.19m | 6:36PM0.42m | ||||||||
5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | |
— | 6:17 | — | — | 6:17 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | 2 | 5 | 5 | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 2 | — | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 28 |
Feels °C | 28 | 29 | 30 | 29 | 28 | 29 | 29 | 28 | 28 | 26 | 26 | 25 | 28 | 27 | 27 | 27 | 28 | 27 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 10 | ENE 8 | ENE 8 | SE 8 | NNE 10 | ENE 8 | SE 7 | SE 7 | SE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 10 | ESE 9 | ESE 9 | SE 8 | SE 8 | ESE 9 | ESE 9 | E 7 | SE 8 |
40 | 302 | 264 | 17 | 9 | 140 | 67 | 69 | 93 | 55 | 76 | 62 | 85 | 56 | 52 | 35 | 35 | 53 | 29 | 131 | 35 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | NNE 10 | ESE 8 | NNE 10 | SE 14 | NNE 10 | ESE 13 | ESE 13 | SE 12 | ESE 12 | ESE 12 | ESE 12 | N 8 | N 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NE 8 | ENE 14 |
18 | 33 | 28 | 19 | 8 | 9 | 35 | 34 | 39 | 30 | 15 | 14 | 10 | 4 | 13 | 12 | 6 | 13 | 15 | 125 | 62 | |
Swell 3 Height (m) Direction Period (s) | — | SE 8 | NNE 10 | E 15 | — | ESE 14 | NNE 9 | NE 9 | N 8 | N 8 | N 8 | N 8 | — | N 9 | SE 11 | SE 11 | N 10 | N 10 | — | SE 8 | NNE 8 |
— | 17 | 20 | 4 | — | 20 | 8 | 3 | 5 | 5 | 5 | 5 | — | 6 | 5 | 5 | 7 | 2 | — | 35 | 14 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | — | E 8 | E 8 | SE 7 | ENE 8 | ENE 8 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | — | ENE 7 |
353 | — | — | 298 | 339 | 65 | 116 | 110 | 115 | 327 | 278 | 245 | 183 | 171 | 210 | 191 | 210 | 269 | 285 | — | 181 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 251 | 235 | 185 | 185 | 185 | 313 | 8 | 251 | 259 | 848 | 259 | 405 | 8 | 259 | 259 | 259 | 251 | 259 | 394 | 246 | 253 |
Best forecast wave conditions in Barbados | |||||||||||||||||||||
Best forecast wave conditions in Barbados | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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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.











