Surf Forecasts:
Koggala Beach surf forecast from 10 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 11AM (local time) - 6ft (1.9m), 18s period, SSW swell with 2,162 kJ wave energy.
Best Forecast Surf Conditions for Koggala Beach this week:
The most powerful waves expected at Koggala Beach in the next 16 days are 1.9m 18s and forecast to arrive on Saturday (Sep 12) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sat 12th Sep) | 6ft (1.9m) 18s |
Table - best surf conditions forecast for Koggala Beach over the next 16 days.
The Lowdown
Hey, Rusty here, and I gotta be straight with you – the outlook for Koggala Beach over the next couple of weeks is a tough one to sell. This is a spot that's *inconsistent* at the best of times, and this forecast is a real mixed bag of tricky conditions. The water is a touch warmer than normal for this time of year, sitting at 84°, which is nice, but it's about the only thing that's easy.
We kick off on Thursday, the 10th of September, with a solid 5ft SSW swell rolling in. The energy is strong, with a combined energy of 1359, and those are long 17-second intervals, a proper groundswell. But the wind is a cross-on at 12 mph, and it's putting a chop on the surface. The whole period is littered with "risk tstorm" warnings, so you'll be dodging rain and lightning. Friday the 11th is more of the same: 5ft to 4ft SSW swell, but that cross-on wind keeps things messy.
The weekend of the 12th and 13th sees the swell bump up to 6ft with a very long 18-second period on Saturday morning. The combined energy jumps to 2734, which is proper strong. The wind swings to a pure cross, which is a bit better, but there's still a cross-chop. It's still not clean, and the "risk tstorm" just won't quit.
The best chance we get in this whole window is a window on Thursday the 17th of September. The swell is 5ft from the SSW, a solid 16-second period, and the combined energy is 1250. The wind drops right back to a light breeze at 6 mph, a light cross-shore with just small ripples. That's the cleanest it's going to get. It's still a "marginal" call, but if you're willing to gamble on a bit of luck, that Thursday morning is the standout. After that, the wind picks up again, and by Friday the 18th, it's back to a cross-on mess.
Then we hit a real rough patch. From Saturday the 19th right through to the end of the forecast on the 25th, the conditions are consistently poor. The swell holds around 6ft to 8ft, and for a bit on the 22nd of September, the swell gets up to 7ft from the WSW with a short, lumpy 8-second period. The wind is a fresh 19 mph cross or cross-on, and the comments are all "poor surf conditions." That's a blank run of about a week, and for an inconsistent break like this, it's a pretty normal reality. With the swell size and the poor quality, some of those days at Koggala look more like a kite session than a paddle session.
Stay patient, watch that Thursday morning, and keep your fingers crossed.
Rusty.
Short Range ForecastHeavy rain (total 37mm), heaviest during Fri night. Warm (max 29°C on Thu afternoon, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 77mm), heaviest during Wed morning. Warm (max 28°C on Sun afternoon, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 17 | SSW 16 | SSW 15 | SSW 14 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 15 | SSW 15 | SSW 18 | SSW 17 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1201 | 1051 | 911 | 651 | 1432 | 2162 | 2113 | 1779 | 1375 | 986 | 773 | 1671 | 711 | 827 | 860 | 763 | 642 | 563 | 655 | 590 |
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-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on |
High Tide | 2:30AM0.57m | 2:28PM0.56m | 2:54AM0.60m | 2:52PM0.56m | 3:18AM0.61m | 3:16PM0.55m | 3:40AM0.61m | 3:39PM0.53m | 4:02AM0.59m | 4:01PM0.50m | 4:22AM0.55m | 4:20PM0.46m | 4:42AM0.51m | |||||||
Low Tide | 8:15PM-0.01m | 8:31AM0.04m | 8:38PM-0.03m | 8:58AM0.03m | 9:00PM-0.04m | 9:23AM0.03m | 9:22PM-0.03m | 9:47AM0.04m | 9:43PM-0.00m | 10:10AM0.06m | 10:03PM0.03m | 10:32AM0.10m | 10:21PM0.07m | |||||||
 |  |  | | | | | | | | | | | | |  | | | |  | |
 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 6:10 | — | — | 6:09 | — | — | 6:09 | — | — | 6:08 | — | — | 6:08 | — | — | 6:07 | — | — | 6:07 | — |
mm | — | 1 | 1 | 3 | 10 | 7 | 5 | 7 | 3 | 2 | 14 | 8 | 1 | 7 | 3 | 10 | 20 | 12 | 5 | 8 |
Temp °C | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 25 | 26 | 25 | 26 | 26 |
Feels °C | 30 | 31 | 31 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 27 | 27 | 27 | 27 | 25 | 27 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 15 | SW 7 | SSW 18 | SSW 13 | SSW 15 | SSW 15 | SSW 8 | SSW 14 | SSW 14 | WSW 6 | SSW 13 |
| kJ | 1201 | 1051 | 911 | 651 | 1025 | 2162 | 2113 | 1779 | 1375 | 986 | 318 | 1671 | 531 | 827 | 860 | 238 | 642 | 563 | 128 | 590 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSW 21 | SSW 21 | SSW 19 | WSW 8 | WSW 8 | WSW 7 | SE 8 | S 20 | SSW 15 | SSW 18 | SSW 17 | SSW 9 | SSW 22 | SSW 14 | SW 7 | SSW 18 | SSW 13 | SSW 16 |
| kJ | 47 | 32 | 871 | 511 | 1432 | 254 | 183 | 134 | 74 | 32 | 773 | 790 | 711 | 118 | 45 | 763 | 67 | 443 | 451 | 547 |
Swell 3 Height (m) Direction Period (s) | SSW 25 | SSW 24 | SSE 9 | W 6 | SE 9 | — | — | — | — | S 20 | S 19 | SE 9 | SSE 9 | SE 9 | SSW 22 | SSW 21 | SSW 19 | SE 8 | SSW 18 | S 7 |
| kJ | 63 | 218 | 29 | 36 | 125 | — | — | — | — | 68 | 178 | 36 | 29 | 3 | 45 | 90 | 391 | 3 | 655 | 58 |
Wind waves Height (m) Direction Period (s) | W 6 | W 6 | W 6 | WNW 6 | WSW 5 | WSW 8 | WSW 8 | W 8 | WSW 7 | SW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 7 | SW 7 | W 7 | W 6 | WSW 6 | WSW 6 | W 6 |
| kJ | 48 | 33 | 37 | 39 | 58 | 318 | 212 | 163 | 148 | 254 | 387 | 327 | 335 | 278 | 386 | 331 | 61 | 123 | 142 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 871 | 871 | 666 | 1346 | 29 | 1203 | 1082 | 368 | 1360 | 1508 | 29 | 368 | 871 | 7 | 152 | 758 | 196 | 190 | 196 | 198 |
Best forecast wave conditions in West Sri Lanka | ||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||
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Information about the Koggala Beach Surf forecast
The above surf forecast table for Koggala Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Koggala Beach can be found by selecting the local surf guide option on the grey menu. Our Koggala Beach 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 (Koggala Beach) 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 Koggala Beach 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.
Kogalla is 10 km (6 miles) from Galle. If you plan a holiday in West Sri Lanka, look for hotels and other accommodation in Galle. Galle has rooms for a wide range of budgets as well as car hire and transport links.
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