Surf Forecasts:
Trincomalee surf forecast from 12 Sep 2026:
- Most powerful swell: Sunday 13 Sep, 2PM (local time) - 3ft (0.9m), 10s period, SSE swell with 161 kJ wave energy.
Best Forecast Surf Conditions for Trincomalee this week:
The most powerful waves expected at Trincomalee in the next 16 days are 0.9m 10s and forecast to arrive on Sunday (Sep 13) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Sep 19) at 5AM.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 13th Sep) | 3ft (0.9m) 10s |
Table - best surf conditions forecast for Trincomalee over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks. Gotta be straight with you – this isn’t one of those classic run of waves. We’re looking at a pretty long, flat spell before anything even remotely interesting shows up.
The whole 16-day window is dominated by tiny, weak surf and mostly cross-onshore or onshore winds. The first recommendation doesn't come until the weekend of Saturday the 14th and Sunday the 15th? No, that’s still flat. Actually, there’s nothing worth paddling out for until the very end of the run. We have a gap of solid, flat days right through the first week and a half. The only break on the radar is Trincomalee, a sheltered point that rarely breaks, so this blank run isn't entirely surprising for this spot. It’s been showing a 1.0 ft to 2 ft range of weak, short-period windswell from the SE for days on end, and the wind has been a mess. Water temp is a warm 84° – that’s about average for the time of year, no complaints there.
We do have a little glimmer of hope tucked away at the end. On Wednesday the 23rd morning, there’s a pulse of very long-period groundswell creeping in from the S at 1.0 ft with a period of 19 seconds and combined energy of 117 (moderate energy). The wind is cross-off from the WSW at 22 mph, which keeps the surface clean. Now, 1.0 ft sounds tiny, but that 19-second period carries real energy and theoretical shape for a point break like Trincomalee. It's a specialist wave at that size – more of a longboard or foil session, and the break is inconsistent and rarely breaks, so it’s a gamble. Then Thursday the 24th and Friday the 25th mornings keep things in that 2 ft range from the SSE with 22 mph cross-off winds, energy climbing to the 60-78 mark. Still small, but clean and rideable on the right gear. The best bet in this whole outlook is that Wednesday 23rd morning window – the quality of the swell direction and the very long period make it the standout.
That’s all we’ve got, really. If you need a paddle, wait for that last stretch. Otherwise, it’s a quiet one.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Sat night. Warm (max 31°C on Sat morning, min 26°C on Sat night). Winds decreasing (fresh winds from the ESE on Sat afternoon, light winds from the SSE by Mon night). | Days 4-6 Weather SummaryHeavy rain (total 49mm), heaviest during Wed night. Warm (max 28°C on Tue afternoon, min 23°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the WSW by Wed night). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | SE 8 | SE 9 | SE 7 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 7 | SE 8 | SSE 10 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 69 | 155 | 109 | 68 | 57 | 38 | 36 | 25 | 18 | 21 | 12 | 12 | 9 | 8 | 9 | 19 | 32 | 31 | 31 | 29 | 28 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-on | on | off | cross-on | cross-on | cross-on | cross-on | cross | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:49AM0.68m | 9:18PM0.63m | 9:23AM0.65m | 9:53PM0.63m | 9:56AM0.62m | 10:29PM0.63m | 10:29AM0.57m | 11:07PM0.61m | 11:03AM0.52m | 11:50PM0.58m | 11:40AM0.47m | 00:41AM0.56m | 12:25PM0.43m | 1:48AM0.54m | |||||||
Low Tide | 3:07PM0.09m | 3:14AM0.15m | 3:37PM0.11m | 3:51AM0.18m | 4:04PM0.13m | 4:27AM0.21m | 4:28PM0.16m | 5:03AM0.25m | 4:52PM0.19m | 5:43AM0.30m | 5:20PM0.22m | 6:39AM0.34m | 5:57PM0.25m | ||||||||
 |  |  | | | |  | | | | |  |  |  |  |  |  |  | | |  | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 6:07 | — | — | 6:06 | — | — | 6:06 | — | — | 6:05 | — | — | 6:05 | — | — | 6:04 | — | — | 6:02 | — |
mm | — | 1 | 18 | — | 1 | 3 | — | — | 2 | — | — | 10 | 6 | 8 | 22 | 3 | — | — | 1 | — | — |
Temp °C | 31 | 29 | 26 | 31 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 25 | 25 | 26 | 25 | 28 | 31 | 26 |
Feels °C | 32 | 28 | 26 | 33 | 27 | 30 | 31 | 30 | 31 | 32 | 30 | 31 | 29 | 30 | 25 | 25 | 26 | 25 | 27 | 30 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 8 | S 21 | SE 7 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 7 | SE 8 | SSE 10 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | 69 | 8 | 109 | 68 | 57 | 38 | 36 | 25 | 18 | 21 | 12 | 12 | 9 | 8 | 9 | 19 | 32 | 31 | 31 | 29 | 28 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 11 | S 18 | S 20 | ESE 4 | S 18 | — | ESE 4 | S 15 | S 14 | ENE 3 | S 13 | — | S 10 | SE 7 | S 17 | — | NW 4 | — | S 15 |
| kJ | — | — | 5 | 7 | 8 | 7 | 6 | — | 2 | 17 | 4 | 1 | 3 | — | 2 | 2 | 6 | — | 1 | — | 4 |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | S 20 | — | S 20 | S 15 | S 15 | — | S 19 | S 20 | S 19 | S 9 | S 18 | S 18 | — | S 17 | S 16 | S 14 | — | S 16 | S 11 |
| kJ | 6 | — | 8 | — | 8 | 4 | 4 | — | 7 | 7 | 7 | 2 | 6 | 6 | — | 6 | 21 | 4 | — | 5 | 2 |
Wind waves Height (m) Direction Period (s) | — | SE 9 | — | WSW 3 | ESE 4 | — | — | ENE 3 | — | — | NE 2 | — | WSW 2 | WSW 3 | WSW 3 | WSW 4 | WSW 3 | WSW 3 | SW 3 | SE 3 | W 3 |
| kJ | — | 155 | — | 1 | 9 | — | — | 1 | — | — | 1 | — | 1 | 2 | 6 | 13 | 10 | 8 | 3 | 3 | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 303 | 1244 | 299 | 343 | 1005 | 194 | 201 | 201 | 194 | 201 | 223 | 194 | 194 | 194 | 194 | 975 | 194 | 343 | 410 | 2028 | 194 |
Best forecast wave conditions in East Sri Lanka | |||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | |||||||||||||||||||||
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Information about the Trincomalee Surf forecast
The above surf forecast table for Trincomalee provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trincomalee can be found by selecting the local surf guide option on the grey menu. Our Trincomalee 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 (Trincomalee) 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 Trincomalee 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 East Sri Lanka? If you are looking for accommodation near Trincomalee, camping, hotels and holiday cottages in East Sri Lanka, consider staying in Trincomalee which is 3 km (2 miles) away. Other places in and around East Sri Lanka where you can find information about places to rent, and car hire include Vavuniya which is 86 km (53 miles) away, Eravur Town and Anuradhapura.
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