
Surf Forecasts:
Troia surf forecast from 10 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 4.5ft (1.4m), 5s period, NW swell with 110 kJ wave energy.
Best Forecast Surf Conditions for Troia this week:
The most powerful waves expected at Troia in the next 16 days are 1.4m 5s and forecast to arrive on Thursday (Sep 10) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Wednesday (Sep 16) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 10th Sep) | 4.5ft (1.4m) 5s |
Table - best surf conditions forecast for Troia over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s get straight to it: the next couple of weeks at Troia are looking proper bleak for anyone chasing waves. We’re starting off with barely a ripple.
Thursday the 10th, there’s nothing doing. The water’s sitting at 73.2°F and that’s about 4°F warmer than usual for this time of year—a notable jump, but that’s about all that’s notable. A tiny 0.7ft west swell with an 8-second period isn’t going to get anyone out of bed, and even though the morning has a clean cross-off breeze, the energy is just pathetic, barely registering (6). Afternoon goes flat.
Friday the 11th is more of the same, maybe a touch worse. The swell stays at 0.7ft, but the period drops to 7 seconds, and an afternoon onshore wind messes up any chance of something rideable. The combined energy is laughable (6).
Saturday the 12th, the swell switches to the south, but it’s still tiny at 0.3ft and the period is longish at 13 seconds—not that it matters with no height. It’s glassy in the morning, but the afternoon gets cross-onshore and choppy.
Now, here’s where we hit a real dry spell. From Sunday the 13th through to Tuesday afternoon the 15th, there’s basically nothing. The models are showing zero swell for several days. It’s a proper dead patch. A surfboard won’t even float properly.
Then, on Tuesday afternoon the 15th, we get a little pulse of life. A 3.6ft north-west swell with a short 5-second period pushes the combined energy up to (47). It’s still pretty junky, but it’s the biggest thing we’ve seen. The cross-off wind keeps it reasonably clean, but with that short period, it’s going to be a bit crumbly and disorganised. Not a stand-out, but at least you might get a few close-outs if you’re desperate.
After that, it’s back to the flatness. Wednesday the 16th through to the end of the window on Friday the 25th is a real desert. Every single forecast period has the swell at 0.3ft or less, with the energy numbers mostly in single digits or low teens. There are periods of glassy conditions and light offshore winds, but you can't surf what isn’t there.
Troia is just an inconsistent spot, and this looks like a particularly blank run. It’s a beach-and-reef setup, so with that weak, short-period stuff and a bit of wind, it’s honestly looking more interesting for a kite than a paddleboard.
The long-range stuff—like the 17th, 24th, and 25th—teases with those 15 and 16-second periods, but they’re all attached to 0.3ft of swell. All promise, no delivery. I wouldn’t hold my breath. This is one of those times where you’re better off finding another hobby for a fortnight.
Keep it salty.
Short Range ForecastMostly dry. Warm (max 32°C on Sat afternoon, min 16°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu afternoon, calm by Sat night). | Days 4-6 Weather SummaryMostly dry. Warm (max 33°C on Sun afternoon, min 16°C on Tue night). Winds increasing (calm on Mon morning, fresh winds from the NNW by Tue afternoon). | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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) | W 8 | W 11 | W 10 | W 7 | W 7 | W 7 | S 13 | S 12 | WNW 9 | WNW 9 | S 12 | S 11 | S 11 | S 11 | NW 4 | WNW 8 | NW 5 | NW 7 | S 13 | S 12 | S 12 |
Wave Graph | |||||||||||||||||||||
6 | 2 | 2 | 4 | 4 | 3 | 3 | 3 | 0 | 0 | 3 | 2 | 2 | 2 | 10 | 0 | 47 | 0 | 3 | 3 | 3 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | off | on | off | off | cross-on | glassy | glassy | cross-on | cross-on | glassy | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:48PM3.05m | 3:13AM2.83m | 3:27PM3.11m | 3:50AM2.87m | 4:04PM3.07m | 4:25AM2.85m | 4:40PM2.95m | 4:59AM2.77m | 5:15PM2.76m | 5:32AM2.64m | 5:51PM2.53m | 6:07AM2.47m | 6:28PM2.29m | ||||||||
Low Tide | 9:05PM-0.04m | 9:13AM0.06m | 9:41PM-0.06m | 9:50AM0.03m | 10:15PM-0.01m | 10:26AM0.08m | 10:48PM0.11m | 11:01AM0.19m | 11:19PM0.28m | 11:36AM0.35m | 11:51PM0.49m | 12:13PM0.55m | 00:25AM0.71m | ||||||||
7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | |
— | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 30 | 20 | 26 | 28 | 25 | 30 | 32 | 26 | 29 | 33 | 28 | 28 | 31 | 27 | 31 | 31 | 20 | 26 | 30 | 19 |
Feels °C | 24 | 27 | 17 | 24 | 26 | 23 | 29 | 28 | 26 | 29 | 30 | 27 | 27 | 29 | 25 | 28 | 26 | 18 | 24 | 25 | 16 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 10 | NW 7 | NW 7 | W 7 | NW 5 | NW 7 | S 12 | WNW 9 | WNW 9 | NW 12 | NW 11 | WNW 9 | WNW 9 | WNW 4 | WNW 8 | WNW 12 | NW 11 | NW 10 | S 12 | NW 10 |
96 | 53 | 77 | 28 | 4 | 17 | 16 | 3 | 71 | 45 | 96 | 172 | 46 | 31 | 5 | 23 | 14 | 30 | 303 | 3 | 341 | |
Swell 2 Height (m) Direction Period (s) | W 8 | WNW 8 | NW 10 | NNW 10 | NW 10 | W 7 | WNW 10 | S 12 | NNW 8 | NW 10 | S 11 | S 11 | NW 11 | NW 11 | WNW 9 | NW 10 | — | — | S 13 | — | NW 12 |
6 | 12 | 23 | 9 | 4 | 3 | 38 | 3 | 6 | 26 | 2 | 2 | 75 | 40 | 26 | 15 | — | — | 3 | — | 53 | |
Swell 3 Height (m) Direction Period (s) | N 12 | W 11 | W 10 | W 7 | W 9 | WNW 8 | S 13 | — | NW 11 | NW 14 | S 12 | — | S 11 | S 11 | NW 10 | NW 4 | — | — | — | — | S 12 |
3 | 2 | 2 | 4 | 2 | 7 | 3 | — | 5 | 29 | 3 | — | 2 | 2 | 35 | 2 | — | — | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | WNW 7 | — | — | NW 6 | — | — | NW 10 | — | — | W 9 | — | SSW 2 | WSW 2 | NW 4 | — | NW 5 | NW 7 | — | NW 10 | — |
— | 68 | — | — | 19 | — | — | 94 | — | — | 39 | — | 1 | 1 | 10 | — | 47 | 116 | — | 334 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 33 | 395 | 18 | 18 | 160 | 48 | 10 | 51 | 28 | 10 | 52 | 28 | 10 | 47 | 18 | 37 | 985 | 536 | 464 | 976 | 47 |
Best forecast wave conditions in Portugal - Alentejo | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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Information about the Troia Surf forecast
The above surf forecast table for Troia provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Troia can be found by selecting the local surf guide option on the grey menu. Our Troia 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 (Troia) 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 Troia 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.
Troia is 9 km (6 miles) from Setubal. If you plan a holiday in Portugal - Alentejo, look for hotels and other accommodation in Setubal. Setubal has rooms for a wide range of budgets as well as car hire and transport links.










