Surf Forecasts:
Troia surf forecast from 16 Aug 2026:
- Most powerful swell: Friday 21 Aug, 7PM (local time) - 4.5ft (1.4m), 5s period, NW swell with 107 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 Friday (Aug 21) 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 1.2m 8s period and expected on Friday (Aug 21) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Fri 21st Aug) | 4.5ft (1.4m) 5s |
Table - best surf conditions forecast for Troia over the next 16 days.
The Lowdown
Alright, I’m looking at this and I have to be straight with you – it’s a tough stretch for surf at Troia. The whole 16-day window is a write-off for waves. From the get-go, right through to the end of the month, there's almost nothing. For a solid two and a half weeks, the swell just isn't there. You're looking at tiny, barely-there waves or outright flat conditions.
The water temp feels about average for this time of year, so no surprises there.
We start off Sunday the 16th with a tiny 0.3ft southwest swell, period a very long 16 seconds, but the combined swell energy is pathetic at just (10). Monday the 17th is more of the same – 0.3ft, short on energy (12). The wind is mostly onshore or cross-on, so conditions are messy.
Mid-week, Tuesday the 18th through Thursday the 20th, we see the swell bump up to a still-tiny 0.7ft, with energy barely reaching (23). The wind stays crappy from the south or southwest, so the surface is rubbish. Friday the 21st and Saturday the 22nd offer a little hope with some cleaner cross-offshore winds from the NNW, but the swell is just so small at 0.7ft and the energy is weak at (20). You’d be fighting for a ripple.
After that, from Sunday the 23rd onward, it’s pretty much dead flat with combined energy at (0) or a measly (7). There is one moment on Monday the 24th afternoon where a 3ft west-northwest windswell shows up, but it’s a short-period 4 seconds, the wind is blowing 19 mph from the WNW, and the energy is still only (44). That’s just a windy, lumpy mess – more of a kite-surfing situation than a paddling one.
Honestly, don't waste the petrol. The forecasts can always change, but right now there’s nothing worth paddling out for. The consistent flat spell is pretty normal for the area at this time.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 31°C on Sun afternoon, min 18°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | SW 16 | SW 16 | SW 15 | SW 15 | W 9 | SW 16 | SW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 4 | SSW 4 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 10 | 10 | 8 | 8 | 2 | 10 | 7 | 23 | 21 | 20 | 1 | 1 | 17 | 17 | 21 | 21 | 19 | 18 | 20 | 20 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | glassy | cross-on | on | on | on | on | on | cross-on | on | glassy | on | on | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 5:34AM2.71m | 5:50PM2.86m | 6:12AM2.58m | 6:29PM2.62m | 6:51AM2.42m | 7:10PM2.36m | 7:33AM2.24m | 7:57PM2.11m | 8:26AM2.07m | 9:01PM1.91m | 9:40AM1.96m | 10:32PM1.82m | 11:12AM1.96m | 00:01AM1.88m | |||||||
Low Tide | 11:32AM0.20m | 00:00AM0.24m | 12:11PM0.37m | 00:36AM0.45m | 12:52PM0.57m | 1:14AM0.68m | 1:38PM0.78m | 1:59AM0.89m | 2:37PM0.97m | 3:02AM1.06m | 4:06PM1.07m | 4:36AM1.12m | 5:45PM1.03m | ||||||||
 | |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 8:28 | — | — | 8:27 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:22 | — | — | 8:20 | — |
mm | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 31 | 26 | 28 | 26 | 22 | 24 | 24 | 21 | 24 | 25 | 21 | 23 | 25 | 20 | 25 | 26 | 19 | 25 | 26 | 20 |
Feels °C | 30 | 30 | 27 | 28 | 24 | 24 | 24 | 22 | 23 | 24 | 25 | 23 | 22 | 23 | 18 | 22 | 21 | 16 | 22 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 8 | SW 16 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | SSW 14 | WNW 11 | WNW 10 | NW 9 | WNW 9 |
| kJ | 135 | 10 | 57 | 58 | 54 | 42 | 25 | 24 | 24 | 10 | 10 | 32 | 32 | 44 | 26 | 16 | 19 | 38 | 109 | 21 | 28 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | WNW 8 | W 7 | W 7 | WNW 8 | WNW 8 | SSW 15 | WNW 8 | SSW 14 | SSW 4 | SSW 4 | NW 6 | SSW 13 | NNW 10 | SSW 14 | WNW 12 | SSW 13 | NW 9 | SSW 14 | WNW 4 |
| kJ | 10 | 10 | 6 | 4 | 1 | 7 | 6 | 23 | 7 | 20 | 1 | 1 | 6 | 17 | 10 | 21 | 14 | 18 | 40 | 20 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 15 | SW 15 | W 9 | SW 16 | SW 14 | WNW 8 | SSW 15 | WNW 8 | WNW 8 | NW 7 | SSW 13 | SW 4 | SSW 14 | W 13 | — | — | SSW 14 | — | NNW 9 |
| kJ | — | — | 8 | 8 | 2 | 10 | 7 | 6 | 21 | 6 | 6 | 7 | 17 | 1 | 21 | 3 | — | — | 20 | — | 8 |
Wind waves Height (m) Direction Period (s) | — | NW 8 | — | — | — | SSW 3 | SSW 3 | — | — | — | — | — | — | WNW 2 | NW 7 | NW 8 | NW 8 | NW 7 | — | WNW 9 | — |
| kJ | — | 98 | — | — | — | 1 | 1 | — | — | — | — | — | — | 1 | 100 | 153 | 196 | 115 | — | 116 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 73 | 10 | 29 | 161 | 73 | 30 | 61 | 60 | 28 | 61 | 10 | 51 | 425 | 60 | 167 | 483 | 52 | 55 | 47 | 52 |
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.
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