Surf Forecasts:
Inside Reef (Hikkaduwa) surf forecast from 17 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 7ft (2.2m), 19s period, SSW swell with 3,688 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 8AM. 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 | 8AM (Tue 18th Aug) | 7ft (2.2m) 19s |
Table - best surf conditions forecast for Inside Reef (Hikkaduwa) over the next 16 days.
The Lowdown
Alright, gather 'round, this is Rusty. Let's have a look at what we've got cooking.
Honestly, for the next two weeks, it's a tough slog. We're looking at Inside Reef (Hikkaduva) which is where we’d normally head for a reef set-up like this one, preferring that South-West swell. But the wind gods aren't playing ball. For most of the forecast, we're stuck with a persistent onshore or cross-onshore breeze from the west, which is going to mess with the surface. On top of that, the water temp is sitting at 82 °F, which is about average for this time of year. The forecast is littered with "poor surf conditions" labels, and you'll see why.
We kick off on Monday the 17th of August with tiny, weak waves. Early morning brings a 2 ft SSW swell with a clean 22-second period, but it's accompanied by a risk of thunderstorms and a moderate breeze that is onshore. The combined energy is moderate (958) but it's just not happening. That afternoon picks up a touch to 3 ft, but it’s still not enough to get excited about.
The rest of that first week, from Tuesday the 18th through to Friday the 21st, the swell bumps up to a solid 5 ft to 7 ft. That's a decent size for this spot, but look at the wind: it's all cross-onshore, swinging around from the W and WNW at 12 to 16 mph. The wave state is described as "moderate cross-onshore and choppy". There's plenty of energy—the combined energy peaks at around 3972 on Tuesday morning, which is strong—but the wind is just wrecking it. For an advanced reef break, that combo just doesn’t work; it’ll be a bumpy, frustrating paddle. Not one for beginners, that's for sure, but even for experts, the quality is going to be poor.
There's a bit of a pattern here. As we move into the second week, we see the swell hanging around the 4 ft to 5 ft mark, but the same story. Onshore and cross-onshore winds from the west just won't let up. The combined energy stays moderate, dropping into the hundreds. The strong energy we saw earlier is gone. By the 28th of August we're looking at a drop down to 3 ft. It's a blank run, plain and simple. This area just gets these long stretches where a decent swell and clean wind don't line up.
If you absolutely had to pick a window, keep an eye on the 17th of August morning. That 2 ft swell with a very long 22-second period from the SSW (which is bang on the optimum direction) and a period that long means it'll have good shape and power on a reef, even if it's small. The wind is the issue, but sometimes you can catch a lull. It's a long shot. Also, the morning of the 29th of August sees a 5 ft SSW swell (18-second period) but once again, a cross-onshore breeze ruins the party. The entire outlook is a bust for clean, rideable surf.
Truth is, for paddle surfing, this set-up looks more interesting for kite surfing than anything else. That cross-onshore wind and solid swell would be a dream for them.
This is Rusty, signing off. It’s going to be a long wait.
Short Range ForecastHeavy rain (total 27mm), heaviest during Mon night. Warm (max 28°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Fri night. Warm (max 28°C on Fri morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 21 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 17 | S 15 | S 15 | S 14 | S 14 | SSW 13 | S 13 |
Wave Graph | |||||||||||||||||||
2757 | 3650 | 3463 | 3393 | 2408 | 1896 | 2980 | 1913 | 2054 | 1349 | 1121 | 822 | 675 | 1275 | 1258 | 999 | 943 | 700 | 573 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on |
High Tide | 5:04AM0.61m | 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 | ||||||||
Low Tide | 10:33PM0.03m | 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 | ||||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | |
mm | 16 | 1 | — | 3 | 1 | 1 | 4 | 1 | — | 5 | 2 | — | 7 | 3 | 1 | 4 | 2 | 1 | 3 |
Temp °C | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 28 | 29 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 21 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 13 | S 15 | S 15 | S 14 | S 14 | SSW 13 | S 13 |
2757 | 3650 | 3463 | 3393 | 2408 | 1896 | 2980 | 1913 | 2054 | 1349 | 1121 | 822 | 564 | 1275 | 1258 | 999 | 943 | 700 | 573 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 9 | S 19 | S 18 | WNW 11 | S 12 | W 10 | W 10 | W 10 | S 18 | S 17 | S 18 | S 26 | SSW 24 | S 21 | S 20 | SSW 18 |
111 | 85 | 72 | 49 | 913 | 1455 | 24 | 224 | 46 | 52 | 49 | 248 | 675 | 155 | 13 | 108 | 233 | 279 | 427 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 12 | — | S 21 | SSE 9 | W 9 | — | — | — | SE 8 | S 22 | W 10 | WNW 9 | S 26 | S 26 | S 24 | W 8 | SW 19 | WNW 10 |
140 | 37 | — | 323 | 31 | 54 | — | — | — | 3 | 36 | 46 | 28 | 13 | 13 | 97 | 34 | 15 | 82 | |
Wind waves Height (m) Direction Period (s) | W 9 | W 6 | 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 5 | W 6 | WNW 8 | W 6 |
383 | 181 | 341 | 274 | 138 | 88 | 144 | 170 | 143 | 160 | 175 | 123 | 123 | 137 | 109 | 80 | 50 | 101 | 38 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 859 | 211 | 205 | 738 | 211 | 211 | 338 | 211 | 205 | 210 | 211 | 210 | 859 | 211 | 210 | 32 | 211 | 210 | 739 |
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.











