Thunder Surf Break

Lat Long: 13.08° N 59.61° W

Thunder Surf Forecast and Surf Report

Issued: 1 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Thunder sea temperature is
29.1°C
0.5° 

Thunder surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Forecast

Light 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 Summary

Moderate 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
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
8
0.6
ESE
8
1.4
E
6
1.7
E
7
0.9
SE
8
0.4
ESE
8
0.3
SE
8
0.1
SE
8
0.2
ESE
8
0.2
ESE
8
0.1
SE
8
0.2
ESE
8
0.6
SE
9
0.8
SE
8
0.6
ESE
9
0.7
SE
9
0.6
SE
9
1.3
E
16
Wave Graph
Metric surfscale
Energy kJ
53
50
49
47
47
0
0
84
26
11
3
6
6
2
6
52
100
55
79
62
0
Wind (km/h)
30
E
25
E
25
E
25
E
30
E
30
E
30
E
30
ENE
30
ENE
30
E
25
ENE
30
E
25
ESE
25
ESE
25
E
25
E
30
E
35
E
30
E
30
E
30
E
Wind State
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
thunderstorm
part cloud
thunderstorm
clear
clear
rain showers
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
thunderstorm
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:46
5:47
5:47
5:47
5:47
5:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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.

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