
Surf Forecasts:
Troia surf forecast from 8 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 4.5ft (1.4m), 5s period, NW swell with 114 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 8s period and expected on Thursday (Sep 10) at 4AM.
| 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, Rusty here. Look, I’ve gotta be straight with you – this stretch isn’t going to have you rushing for the board bag anytime soon. Over the next 16 days, the surf at Troia is looking pretty flat and uninspiring. We’ve got a long gap of tiny, weak, and messy conditions with almost no real rideable swell on the table. You’ll be waiting a while for anything that even gets your heart rate up.
Starting Tuesday, September 8th, there’s pretty much nothing doing. Tuesday morning brings a small 2ft northwest swell with a short 6-second period and weak energy (30), but the cross-offshore wind keeps it clean. Still, it’s labelled as poor surf conditions – barely enough to push a log around. That afternoon, the swell disappears entirely.
Wednesday September 9th is more of the same: a tiny 2ft NW swell with a 4-second period in the morning (energy a measly 9) and a slightly bigger 4ft NW swell in the afternoon, but the period is still short at 5 seconds and the cross-shore wind chops it up. Not worth paddling out.
From Thursday September 10th through to Monday September 14th, the swell drops to practically nothing – mostly 0.3ft to 0.7ft waves from the west or south with periods all over the place. Energy readings barely hit two digits. There’s a glassy morning on Sunday September 13th, but with zero swell it’s just a flat, pretty lake. Not a single day in this stretch offers anything close to a rideable wave.
Tuesday September 15th is another glassy morning with zero swell. The afternoon sees a pathetic 1ft WNW windswell with a 2-second period – that’s barely a ripple.
We finally see a tiny uptick Wednesday September 16th morning, with a 2ft WNW swell (4-second period, energy 16) under clean cross-offshore wind. But it’s still poor surf and not worth getting excited about.
Thursday September 17th through Monday September 21st stays flat or near-flat, with tiny 0.3ft swells and weak energy (single digits to low teens). A few clean mornings pop up, like the glassy start on Thursday and a light offshore Sunday morning, but with no swell, it’s a skip.
The best – and I mean the *best* of a bad bunch – comes on Tuesday September 22nd. We get a 1ft swell from the southwest in the morning (7-second period, energy 21) and a 2ft SW swell in the afternoon (5-second period, energy 23). Both are under clean cross-offshore wind. Even then, it’s still labelled poor surf. The swell is tiny, the period is short, and it’s just not going to produce anything worth driving for.
Wednesday September 23rd morning has a 0.3ft SW swell with a 12-second period (energy 9) and a moderate offshore wind, but again, it’s tiny and labelled poor.
Honestly, there is no standout session in this 16-day window. The conditions are a near-constant mix of flatness and weak, short-period junk. Keep the board in the rack, mate. There might be a small window around September 22nd if you’re desperate for a splash, but I wouldn’t hold my breath. Forecasts can change, so don’t lose all hope – but right now, it’s a quiet spell for Troia.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 17°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 33°C on Sat afternoon, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | NW 6 | WNW 10 | NW 5 | NW 4 | NW 5 | W 13 | W 12 | NW 7 | W 10 | W 7 | W 9 | W 11 | S 13 | S 12 | NW 8 | NW 10 | S 12 | S 11 | S 11 | S 11 | NW 10 |
Wave Graph | |||||||||||||||||||||
30 | 0 | 35 | 9 | 80 | 3 | 3 | 0 | 2 | 4 | 2 | 2 | 3 | 3 | 0 | 0 | 3 | 2 | 2 | 2 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | off | cross-on | glassy | glassy | on | glassy | cross-on | on | glassy |
High Tide | 1:18PM2.69m | 1:51AM2.56m | 2:06PM2.91m | 2:34AM2.72m | 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 | ||||||||
Low Tide | 7:03AM0.55m | 7:42PM0.26m | 7:52AM0.34m | 8:26PM0.07m | 8:34AM0.17m | 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 | |||||||
7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | |
— | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:46 | — | — | 7:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 21 | 25 | 26 | 18 | 26 | 29 | 20 | 28 | 30 | 23 | 31 | 33 | 27 | 29 | 29 | 28 | 28 | 28 | 25 |
Feels °C | 24 | 25 | 21 | 20 | 20 | 15 | 24 | 26 | 16 | 28 | 28 | 23 | 30 | 30 | 28 | 27 | 27 | 27 | 26 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | — | WNW 9 | NW 8 | N 12 | W 13 | NW 8 | NW 10 | NW 10 | NW 6 | NW 10 | NW 7 | WNW 9 | NW 12 | NW 8 | NW 10 | NW 9 | NW 12 | NW 12 | NW 11 | NW 10 |
245 | — | 101 | 24 | 3 | 3 | 125 | 49 | 16 | 34 | 4 | 62 | 59 | 6 | 55 | 82 | 88 | 205 | 161 | 114 | 94 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | WNW 8 | — | W 13 | NW 10 | — | W 10 | NNW 10 | W 9 | W 7 | NW 8 | S 12 | WNW 9 | NW 13 | NW 13 | S 11 | S 11 | WNW 9 | — |
— | — | — | 22 | — | 3 | 28 | — | 2 | 10 | 2 | 1 | 42 | 3 | 32 | 63 | 100 | 2 | 2 | 15 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 12 | — | — | W 7 | — | W 11 | S 13 | — | NW 11 | WNW 9 | S 12 | — | — | S 11 | — |
— | — | — | — | — | — | 3 | — | — | 4 | — | 2 | 3 | — | 19 | 26 | 3 | — | — | 2 | — | |
Wind waves Height (m) Direction Period (s) | NW 6 | WNW 10 | NW 5 | NW 4 | NW 5 | NW 8 | — | NW 7 | NW 7 | — | NW 6 | — | — | WNW 9 | — | — | — | — | — | — | — |
30 | 251 | 35 | 9 | 80 | 193 | — | 107 | 94 | — | 43 | — | — | 141 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 355 | 60 | 300 | 343 | 60 | 33 | 488 | 56 | 56 | 160 | 10 | 10 | 51 | 10 | 10 | 52 | 10 | 28 | 52 | 10 |
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.










