Surf Forecasts:
Inside Reef (Hikkaduwa) surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 2PM (local time) - 7ft (2.2m), 19s period, SSW swell with 3,575 kJ wave energy.
Best Forecast Surf Conditions for Inside Reef (Hikkaduwa) this week:
The most powerful waves expected at Inside Reef (Hikkaduwa) in the next 16 days are 2.2m 19s and forecast to arrive on Tuesday (Aug 18) at 2PM. 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 | 2PM (Tue 18th Aug) | 7ft (2.2m) 19s |
Table - best surf conditions forecast for Inside Reef (Hikkaduwa) over the next 16 days.
The Lowdown
Alright, my friends, let’s get real about the next couple of weeks at Inside Reef (Hikkaduwa). We’ve got some serious size on the way, but the wind is just going to mess it all up. It’s gonna be a battle against the chop.
To start things off on Tuesday the 18th, we’ve got a solid 7ft of SSW groundswell with a long 19-second period. That’s a lot of energy, the models are showing a big 4013 in the combined energy department. But the wind is 20 km/h from the WNW, right across the face. It’s gonna be choppy and messy. This is not for the faint of heart, you’d need to be an expert to get any kind of ride. The water’s warm, about 82°, which is pretty standard, so no worries there.
Wednesday the 19th is more of the same, a little smaller but just as messy. The next several days, through the weekend, the swell eases but that cross-onshore wind doesn't. The 22nd and 23rd see the waves drop to the 5ft to 6ft range, but the wind goes more onshore. This is just a mess, flat-out poor conditions. Not worth the paddle.
The whole following week, from the 24th of August through the 30th, is looking small and weak, with waves mostly in the 3ft to 5ft range. The periods are still okay, but the quality is totally lacking with that wind. We're talking about an 8-9 day stretch of nothing that looks appealing. The energy drops into the moderate range, but it doesn't matter when it's all blown out.
Heading into the final week, starting August 31st, the size starts to pick back up. We’re forecast to see waves back in the 5ft to 8ft range by the 1st of September, and the energy is strong again. But the wind is still modeled to be on it, and the surf reports are still calling it poor. It looks like more of the same – big, raw, and messy. This is second week stuff, so don’t get too excited until we’re closer.
The bottom line is that there is no true standout day in this forecast. The biggest letdown is that we have the swell, but the wind just won’t cooperate. For a reef break like this, you need that clean offshore flow to make it glassy and perfect. Instead, we’re looking at a long stretch of poor to marginal conditions. The best chance we had was the 18th with that big groundswell, but even then, the wind was going to ruin it.
There’s a long gap with nothing good on offer from around the 20th to the end of the month. That’s over a week of no good surf. A blank run, but it happens. The direction is right, all that SSW swell, for this spot, so when the wind finally plays nice, it’ll be on. Until then, grab a different board or find a hobby. Keep an eye on it, though. Forecasts can change.
Rusty out.
Short Range ForecastModerate rain (total 19mm), heaviest on Thu night. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Sat night. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 14 | S 17 | S 15 | S 15 | SSW 14 | S 14 | S 13 | S 13 | S 18 | SSW 16 | S 16 |
Wave Graph | |||||||||||||||||||||
3650 | 3463 | 3393 | 2408 | 1896 | 2980 | 1968 | 2054 | 1499 | 1121 | 938 | 675 | 1275 | 1258 | 684 | 831 | 683 | 563 | 625 | 787 | 1131 | |
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-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | on | cross-on | on |
High Tide | 4:47PM0.53m | 5:31AM0.56m | 5:05PM0.47m | 6:00AM0.50m | 5:13PM0.40m | 6:37AM0.43m | 4:43PM0.34m | 8:50AM0.38m | 12:12PM0.42m | 1:13AM0.32m | 12:51PM0.48m | 1:27AM0.39m | |||||||||
Low Tide | 10:56AM0.16m | 10:55PM0.06m | 11:23AM0.20m | 11:16PM0.10m | 11:52AM0.24m | 11:35PM0.15m | 12:31PM0.29m | 11:48PM0.20m | 8:59PM0.24m | 7:45PM0.20m | 6:20AM0.23m | 7:44PM0.15m | |||||||||
6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:20 | — | |
mm | 2 | — | — | 2 | 2 | 4 | 2 | 2 | 5 | 2 | 2 | 4 | 2 | 1 | 8 | 3 | 2 | 5 | 3 | 2 | 4 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 |
Feels °C | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 14 | S 13 | S 15 | S 15 | SSW 14 | S 14 | S 13 | S 13 | S 12 | SSW 16 | S 16 |
3650 | 3463 | 3393 | 2408 | 1896 | 2980 | 1968 | 2054 | 1499 | 1121 | 938 | 564 | 1275 | 1258 | 684 | 831 | 683 | 563 | 350 | 787 | 1131 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 9 | S 19 | S 18 | W 8 | S 12 | W 10 | W 10 | W 10 | W 9 | S 17 | S 18 | S 26 | S 10 | S 21 | S 20 | SSW 18 | S 18 | S 12 | WNW 10 |
75 | 72 | 49 | 913 | 1455 | 52 | 224 | 67 | 74 | 49 | 64 | 675 | 155 | 13 | 188 | 233 | 373 | 427 | 625 | 285 | 78 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | — | S 21 | SSE 9 | — | W 8 | — | — | S 24 | S 22 | S 18 | W 9 | S 26 | S 26 | SSW 24 | W 8 | W 10 | W 10 | WNW 10 | WNW 10 | — |
107 | — | 323 | 31 | — | 52 | — | — | 11 | 36 | 248 | 55 | 13 | 13 | 108 | 33 | 51 | 31 | 80 | 77 | — | |
Wind waves Height (m) Direction Period (s) | W 6 | W 9 | W 9 | W 9 | W 9 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 5 | W 6 | W 6 | W 5 |
181 | 341 | 239 | 257 | 245 | 91 | 164 | 111 | 95 | 128 | 102 | 96 | 119 | 97 | 72 | 52 | 40 | 62 | 61 | 59 | 67 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 208 | 739 | 211 | 210 | 859 | 211 | 205 | 210 | 211 | 210 | 859 | 338 | 210 | 338 | 211 | 211 | 738 | 211 | 210 | 767 | 211 |
Best forecast wave conditions in West Sri Lanka | |||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | |||||||||||||||||||||
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Information about the Inside Reef (Hikkaduwa) Surf forecast
The above surf forecast table for Inside Reef (Hikkaduwa) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Inside Reef (Hikkaduwa) can be found by selecting the local surf guide option on the grey menu. Our Inside Reef (Hikkaduwa) 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 (Inside Reef (Hikkaduwa)) 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 Inside Reef (Hikkaduwa) 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.
Inside Reef (Hikkaduwa) is 9 km (6 miles) from the city of Ambalangoda. If you plan a holiday in West Sri Lanka, look for hotels and other accommodation in Ambalangoda. Ambalangoda has rooms for a wide range of budgets as well as car hire and transport links.











