Surf Forecasts:
Troia surf forecast from 30 Aug 2026:
- Most powerful swell: Monday 31 Aug, 7PM (local time) - 4.5ft (1.3m), 6s period, NW swell with 100 kJ wave energy.
Best Forecast Surf Conditions for Troia this week:
The most powerful waves expected at Troia in the next 16 days are 1.3m 6s and forecast to arrive on Monday (Aug 31) 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 1.3m 9s period and expected on Monday (Aug 31) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Mon 31st Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Troia over the next 16 days.
The Lowdown
G'day, this is Rusty.
Well, I've looked over the charts for Troia and I've got to be honest with you, mate—it's a bit of a tough one. The whole 16-day window is looking pretty flat. There's just no real swell on the cards, and the one spot we've got to work with, Troia, is rated as inconsistent and only a beginner wave on its best days. We're looking at a long stretch of very small, mostly unrideable conditions.
The first week or so is a write-off. From Sunday the 30th of August all the way through to the end of the first week of September, we're seeing nothing but tiny waves, mostly around 0.3ft to 0.7ft, with a bit of a bump from the SSW. The combined energy is incredibly weak, reading between 3 and 28, which is barely a ripple. The wind is often cross-off or clean, which is nice, but with no swell to work with, it's just a flat, glassy lake. The water temp is about 71°, which is a touch warmer than normal for this time of year, but that's small comfort when there's nothing to ride.
The second week doesn't get much better. We see a few little pulses of energy from the NW around the 8th and 9th of September, with swell heights creeping up to 2ft and 2ft and a combined energy of 19. That's still tiny, and the period is a very short 4 to 5 seconds, so it's going to be weak and bumpy. The winds are clean in the mornings, but the afternoons get a bit messy. Around the 11th of September, we get the biggest swell of the whole forecast at 3ft, but it's a short-period 4-second NW windswell, and it's coming in with a cross-onshore wind, making it choppy and unsurfable. The combined energy hits 29, which is still weak.
Honestly, there's no standout here. Not a single day where you'd want to paddle out. The best you could hope for is a tiny, clean, glassy bump on the morning of the 8th of September, but it's barely a wave. For a spot like Troia that's already inconsistent, this is a long, dry spell. The forecast might change, but right now, it's a flat spell that's best used for other things.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 16°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 38°C on Thu afternoon, min 23°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 13 | NW 5 | SW 18 | SW 16 | SW 16 | SSW 15 | SW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 13 | NW 10 | SW 13 | SW 12 | SW 12 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3 | 40 | 12 | 11 | 10 | 22 | 9 | 21 | 21 | 23 | 21 | 20 | 20 | 18 | 7 | 0 | 7 | 6 | 6 | 3 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 4:39PM2.92m | 4:59AM2.73m | 5:13PM2.85m | 5:34AM2.68m | 5:51PM2.71m | 6:14AM2.57m | 6:35PM2.52m | 7:01AM2.42m | 7:30PM2.31m | 8:02AM2.27m | 8:45PM2.12m | 9:26AM2.17m | 10:24PM2.05m | |||||||
Low Tide | 10:49PM0.10m | 10:59AM0.18m | 11:23PM0.17m | 11:36AM0.27m | 00:00AM0.31m | 12:19PM0.41m | 00:43AM0.49m | 1:10PM0.58m | 1:37AM0.70m | 2:19PM0.75m | 2:53AM0.87m | 3:56PM0.82m | ||||||||
 |  | | | | |  | | | | | | |  | | | | | | | |
 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — |
 | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 8:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 20 | 25 | 27 | 18 | 24 | 26 | 18 | 26 | 30 | 26 | 34 | 38 | 31 | 35 | 38 | 29 | 36 | 39 | 28 |
Feels °C | 24 | 18 | 21 | 22 | 15 | 20 | 22 | 15 | 26 | 28 | 25 | 31 | 35 | 29 | 32 | 35 | 25 | 33 | 36 | 26 |
Swell 1 Height (m) Direction Period (s) | W 13 | NW 9 | NW 9 | SW 16 | NW 10 | SSW 15 | SW 15 | SSW 14 | NW 8 | SSW 15 | NW 8 | NW 7 | SSW 14 | WNW 5 | WNW 8 | WNW 8 | NW 12 | NW 10 | NW 10 | WNW 9 |
| kJ | 3 | 67 | 65 | 11 | 115 | 22 | 9 | 21 | 80 | 23 | 45 | 26 | 20 | 9 | 46 | 26 | 195 | 154 | 98 | 108 |
Swell 2 Height (m) Direction Period (s) | — | W 12 | WNW 11 | — | SW 16 | W 9 | — | — | SSW 15 | — | SSW 14 | WNW 9 | SW 14 | WNW 9 | SW 13 | NW 10 | SW 13 | SW 12 | SW 12 | NW 14 |
| kJ | — | 3 | 24 | — | 10 | 6 | — | — | 21 | — | 21 | 8 | 8 | 29 | 7 | 27 | 7 | 6 | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 18 | — | — | — | — | — | — | — | W 8 | SSW 14 | W 7 | SSW 14 | NW 11 | NW 13 | — | — | — | S 12 |
| kJ | — | — | 12 | — | — | — | — | — | — | — | 1 | 20 | 1 | 18 | 5 | 7 | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 5 | NW 6 | NW 9 | NW 6 | NW 9 | NW 9 | NW 8 | — | NW 8 | — | — | NW 9 | — | — | — | — | — | — | — |
| kJ | 166 | 40 | 42 | 314 | 94 | 208 | 225 | 177 | — | 93 | — | — | 62 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 37 | 458 | 47 | 162 | 162 | 162 | 162 | 549 | 60 | 10 | 45 | 10 | 10 | 123 | 10 | 33 | 47 | 10 | 10 | 45 |
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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