Surf Forecasts:
Thunder surf forecast from 23 Aug 2026:
- Most powerful swell: Friday 28 Aug, 5PM (local time) - 2.5ft (0.8m), 8s period, SE swell with 100 kJ wave energy.
Best Forecast Surf Conditions for Thunder this week:
The most powerful waves expected at Thunder in the next 16 days are 0.8m 8s and forecast to arrive on Friday (Aug 28) 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 Saturday (Aug 29) at 2AM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Fri 28th Aug) | 2.5ft (0.8m) 8s |
Table - best surf conditions forecast for Thunder over the next 16 days.
The Lowdown
G'day, Rusty here, and I've got the lowdown on the stretch ahead. Look, I'll level with you, it's a tough run. The guidance points to a spot called Thunder, a reef break that's about as reliable as a two-dollar watch – it rarely breaks, and when it does, it's not exactly firing. The water temperature is sitting at 84°, which is pretty average for this time of year, nothing to write home about.
We kick off on Sunday, 23rd August, with a tiny 2 ft swell from the ESE. The wind's a cross-off at 19 mph, keeping things clean but the energy is weak, only 53 on the dial. It's a poor surf situation, and honestly, it stays that way for days. The next week is a barren wasteland of tiny, weak swells and persistent cross-off easterly winds. Monday the 24th is the same story, 2 ft and weak energy. Tuesday the 25th sees a slight bump to 3 ft, but it's still a short period 8-second SE swell with weak energy (84). Wednesday and Thursday are a total write-off, with swells barely registering. Friday the 28th shows a hint of life with a 3 ft SE swell pushing the energy to 100, but it’s still labelled poor. Saturday the 29th is similar.
The only period that gets your heart going a little is the end of the first week. On Monday, 31st August, the swell lifts to 4 ft from the SE with a moderate wave energy of 125, and the wind drops to a cross-off 12 mph. The following day, Tuesday 1st September, we get nothing, a total flat spell that lasts right through to Wednesday the 2nd. Then on Thursday 3rd September there's a weak 2 ft pulse, but it's accompanied by a risk of thunderstorms and the energy is a pathetic 36.
The real highlight, such as it is, falls on Saturday, 5th September. We see the biggest swell of the whole outlook: a 4 ft ESE swell with period of 8 seconds and a combined energy of 134 (moderate). The wind stays cross-off at 19 mph, so it will be rideable, but with that short period and the reef exposure, it's not going to offer any magic. The swell direction (ESE) is not aligned with what this break wants (ENE), so don't expect it to be at its best. This is the closest we get to a standout, but for most of us, it's still a pretty average day. After that, it's back to tiny pulses and another flat patch from Sunday 6th September onward.
With the persistent onshore component and the weak, short-period swells, this is a bleak outlook. Honest truth, the whole 16-day window is a struggle. You'd be better off saving your energy, or maybe looking at a different sport.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Warm (max 29°C on Tue morning, min 27°C on Sun morning). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed night. Warm (max 29°C on Fri morning, min 27°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 6 | E 7 | SE 8 | ESE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | SE 8 | ESE 8 | SE 9 | SE 8 | ESE 9 | SE 9 | SE 9 | E 16 |
Wave Graph | |||||||||||||||||||||
53 | 50 | 49 | 47 | 47 | 0 | 0 | 84 | 26 | 11 | 3 | 6 | 6 | 2 | 6 | 52 | 100 | 55 | 79 | 62 | 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 | 2:06PM0.52m | 00:41AM0.65m | 2:32PM0.57m | 1:30AM0.70m | 2:56PM0.61m | 2:11AM0.75m | 3:18PM0.65m | 2:49AM0.78m | 3:41PM0.69m | 3:26AM0.80m | 4:05PM0.73m | 4:02AM0.80m | 4:30PM0.76m | 4:39AM0.78m | |||||||
Low Tide | 6:36PM0.42m | 7:48AM0.16m | 7:27PM0.38m | 8:23AM0.14m | 8:07PM0.35m | 8:55AM0.13m | 8:44PM0.31m | 9:24AM0.13m | 9:20PM0.27m | 9:53AM0.14m | 9:55PM0.24m | 10:21AM0.16m | 10:32PM0.20m | ||||||||
5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | |
— | 6:15 | — | — | 6:14 | — | — | 6:14 | — | — | 6:13 | — | — | 6:12 | — | — | 6:12 | — | — | 6:10 | — | |
mm | 1 | — | 2 | — | — | 1 | — | — | — | — | — | 3 | 1 | 1 | 3 | — | — | 3 | 1 | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 28 |
Feels °C | 28 | 28 | 29 | 29 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 30 | 30 | 30 | 28 | 26 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | N 8 | N 12 | SE 8 | ESE 8 | SE 8 | NE 15 | NE 14 | NE 13 | NE 13 | ENE 8 | NE 12 | SE 8 | ESE 9 | SE 9 | E 8 | E 16 |
53 | 50 | 49 | 47 | 47 | 1 | 3 | 84 | 26 | 11 | 36 | 72 | 85 | 83 | 173 | 87 | 100 | 55 | 79 | 177 | 868 | |
Swell 2 Height (m) Direction Period (s) | N 7 | N 7 | NNE 8 | E 8 | NNE 8 | — | — | N 12 | NE 11 | NE 16 | NNE 12 | ESE 8 | ESE 8 | SE 8 | NE 12 | SE 9 | NE 11 | NE 10 | NE 9 | SE 9 | NE 9 |
4 | 4 | 6 | 20 | 6 | — | — | 3 | 5 | 40 | 14 | 6 | 6 | 2 | 90 | 52 | 57 | 54 | 55 | 62 | 31 | |
Swell 3 Height (m) Direction Period (s) | N 9 | N 9 | NE 10 | NNE 8 | NE 9 | — | — | — | NE 18 | NE 11 | SE 8 | N 10 | — | — | ESE 8 | — | — | — | E 20 | E 18 | N 13 |
6 | 6 | 4 | 6 | 3 | — | — | — | 12 | 5 | 3 | 2 | — | — | 6 | — | — | — | 30 | 162 | 3 | |
Wind waves Height (m) Direction Period (s) | E 6 | E 7 | E 8 | E 6 | E 6 | E 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | E 8 | ENE 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 | ENE 8 |
184 | 198 | 196 | 86 | 92 | 157 | 282 | 298 | 361 | 383 | 374 | 350 | 316 | 238 | — | 210 | 238 | 481 | 345 | 115 | 316 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 251 | 313 | 765 | 313 | 313 | 638 | 821 | 259 | 259 | 259 | 8 | 251 | 27 | 27 | 27 | 821 | 259 | 259 | 848 | 813 | 427 |
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.











