Surf Forecasts:
The Rock surf forecast from 25 Aug 2026:
- Most powerful swell: Monday 31 Aug, 11AM (local time) - 6ft (1.9m), 18s period, SSW swell with 2,240 kJ wave energy.
Best Forecast Surf Conditions for The Rock this week:
The most powerful waves expected at The Rock in the next 16 days are 1.9m 18s and forecast to arrive on Monday (Aug 31) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Mon 31st Aug) | 6ft (1.9m) 18s |
Table - best surf conditions forecast for The Rock over the next 16 days.
The Lowdown
G'day, I'm Rusty, and I've been staring at the charts for your area. Let's be straight up – we’ve got a long, frustrating stretch ahead of us. The only break on the radar is The Rock, and things are looking pretty grim for the next couple of weeks. There’s a solid run of days where it’s just not worth paddling out, so get ready for some time on the beach.
We’re talking about a massive gap here. From today, Tuesday the 25th of August, all the way through to the end of the month, it’s mostly poor conditions with cross-onshore winds messing it up. The wind is coming straight from the west or west-southwest at 12 to 15 mph, which just chops everything up. The swell is from the SSW, but the combined swell energy is all over the place – a moderate 791 on Tuesday morning but jumping to a strong 2300 on Thursday morning, though that doesn’t matter when the wind is on it. The water temp is 82°F, which is about average for this time of year, so you won’t need a thick suit at least. For a beginner-friendly reef break, those 3 ft to 6 ft waves are just messy, and I wouldn't bother.
There is a little glimmer late in the week. The Rock might offer something on Sunday the 30th of August. You’ll get a 4 ft to 5 ft groundswell from the SSW with a very long 18 to 19-second period. The combined energy is strong (1509 to 1748), pointing to a deep, powerful ocean. The wind switches to a cross-shore, which is better than what we’ve had, but the forecast still says *marginal*. It’s a reef break, so that long period swell could really line up and offer some nice clean lines, and it’s fairly consistent here. It might be the best of a bad bunch, but with “sometimes” crowds, you might have to share the peak if you’re lucky enough for it to come together.
After that, we slide back into the same routine. September kicks off with more strong westerly winds and choppy conditions until the 4th. The swell drops off, the period shortens, and the combined energy falls back to moderate levels like 609 on the 4th. From the 6th of September onwards, the swell is small, below 4 ft, and the energy is weak, between 255 and 627. The wind stays nasty. It’s a long, flat, blown-out period. This looks more interesting for kite surfing than paddle surfing at a spot like this. It’s a shame, but that’s the forecast.
Keep your chin up, the forecasts can always change, but this run looks locked in.
Rusty.
Short Range ForecastHeavy rain (total 66mm), heaviest during Thu night. Warm (max 28°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 37mm), heaviest during Fri afternoon. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | SSW 15 | SSW 14 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 19 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 20 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||||
456 | 361 | 257 | 534 | 481 | 639 | 2114 | 888 | 1055 | 1021 | 651 | 534 | 372 | 307 | 883 | 1157 | 1420 | 1814 | 2240 | 1826 | 2162 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on |
High Tide | 1:31PM0.47m | 2:06AM0.42m | 1:55PM0.51m | 2:25AM0.47m | 2:18PM0.54m | 2:45AM0.51m | 2:42PM0.55m | 3:08AM0.55m | 3:05PM0.56m | 3:31AM0.57m | 3:29PM0.54m | 3:55AM0.58m | 3:53PM0.52m | 4:20AM0.57m | |||||||
Low Tide | 8:00PM0.08m | 7:48AM0.12m | 8:18PM0.04m | 8:14AM0.09m | 8:37PM0.01m | 8:40AM0.05m | 8:56PM-0.02m | 9:06AM0.03m | 9:17PM-0.03m | 9:33AM0.03m | 9:38PM-0.03m | 10:00AM0.04m | 10:00PM-0.02m | ||||||||
6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:17 | — | — | 6:17 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | 8 | 6 | 7 | — | 3 | 10 | 4 | 9 | 19 | 1 | 5 | 8 | 4 | 4 | 7 | 4 | 2 | 2 | 1 | 2 | 4 |
Temp °C | 27 | 27 | 26 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 26 | 28 | 28 | 27 | 29 | 28 | 27 |
Feels °C | 29 | 28 | 28 | 29 | 28 | 29 | 28 | 28 | 28 | 29 | 27 | 29 | 28 | 28 | 27 | 29 | 29 | 29 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | S 9 | SSW 16 | SSW 16 | SSW 15 | SSW 19 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
456 | 361 | 168 | 534 | 481 | 639 | 2114 | 888 | 1055 | 1021 | 651 | 534 | 372 | 307 | 402 | 1157 | 1420 | 1814 | 2240 | 1826 | 2162 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | SSW 13 | S 9 | S 8 | SSW 20 | W 9 | SSW 13 | S 11 | W 9 | S 8 | S 8 | S 9 | S 9 | SSW 20 | SSW 12 | SSW 12 | S 12 | S 11 | S 11 | SE 8 |
223 | 165 | 257 | 93 | 68 | 523 | 57 | 257 | 178 | 39 | 31 | 50 | 53 | 55 | 883 | 244 | 240 | 180 | 116 | 121 | 34 | |
Swell 3 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | S 24 | S 12 | SSE 8 | WNW 9 | S 9 | W 8 | W 9 | — | WSW 9 | SSW 20 | SSW 20 | W 8 | SE 8 | SE 8 | SW 12 | SE 9 | WNW 10 | WNW 9 |
47 | 47 | 60 | 11 | 104 | 42 | 84 | 81 | 51 | 56 | — | 25 | 78 | 232 | 37 | 17 | 16 | 68 | 19 | 31 | 48 | |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 6 | W 5 | W 9 | W 9 | W 5 | WSW 5 | W 9 | W 6 | W 6 | WSW 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 |
65 | 63 | 29 | 162 | 153 | 61 | 45 | 190 | 62 | 82 | 110 | 80 | 102 | 106 | 89 | 108 | 88 | 72 | 86 | 92 | 66 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 774 | 774 | 461 | 192 | 764 | 193 | 192 | 763 | 193 | 192 | 875 | 193 | 189 | 374 | 193 | 192 | 875 | 193 | 186 | 193 | 193 |
Best forecast wave conditions in West Sri Lanka | |||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | |||||||||||||||||||||
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Information about the The Rock Surf forecast
The above surf forecast table for The Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Rock can be found by selecting the local surf guide option on the grey menu. Our The Rock 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 (The Rock) 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 The Rock 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.











