Surf Forecasts:
Cogumelo surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 7AM (local time) - 5ft (1.6m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7PM (local time) - 7ft (2.2m), 9s period, NW swell with 753 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 7AM (local time) - 5ft (1.6m), 8s period with NW swell.
Best Forecast Surf Conditions for Cogumelo this week:
The surf forecast for Cogumelo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 10) at 7AM. The primary swell is predicted to be 1.6m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cogumelo in the next 16 days are 2.2m 9s and forecast to arrive on Wednesday (Sep 16) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 8s period and expected on Wednesday (Sep 16) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 10th Sep) | 5ft (1.6m) 8s |
| Best Surf | 7AM (Thu 10th Sep) | 5ft (1.6m) 8s |
| Most Powerful | 7PM (Wed 16th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking at Cogumelo over the next couple of weeks.
It’s a slow start, I won’t lie. The first few days are a write-off with messy, cross-onshore winds and lumpy conditions. Don’t even bother paddling out on the 9th or 10th – it’s just not worth the fight. By Friday morning the 11th, we get a little window of hope. A 3ft NW swell, but the real story is the glassy conditions with a light NE breeze. That’s a rare treat for Cogumelo, and it’ll be clean even if the waves are a bit ordinary. The energy is weak (100), so it’s a small-wave session for the log or a fun mid-length.
The weekend is poor again, with onshore winds and messy surf. The morning of Sunday the 13th has a bit of clean 3ft NW swell (172 energy), but it’s nothing to write home about.
Now, Monday the 14th is where we start to see something. The morning brings a glassy 4ft NW groundswell (300 energy) with an 11-second period. That’s clean, that’s got some push, and the calm wind makes it the best session of the first week. Crowds are possible here, so get in early.
The second week has a few more promising windows. Wednesday the 16th is a no-go – too much wind and chop. But Thursday the 17th morning has a 5ft NW swell (533 energy) with a gentle cross-shore, and it’s looking more surfable.
The real standout is Monday the 21st of September. I’m talking about a solid 6ft NW groundswell with a very long 14-second period. The energy is pumping (1273) – that’s strong. The wind is glassy from the SW. This is for experienced surfers only, as it’s pushing over 5ft. That long period will make the waves fat and powerful, best on the peak. This is the one to circle on the calendar.
Tuesday the 22nd morning is also a beauty: 5ft NW swell (563 energy), glassy, clean conditions. High quality for a solid session.
The rest of the week fades back into smaller, weaker surf. The 24th is flat and not worth the walk.
Overall, Cogumelo has a few gems if you pick the right windows. The glassy mornings are gold, and that 21st is the big one. Don’t get tempted by the afternoon onshores – they’ll ruin it.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Sat morning, min 16°C on Wed night). Winds decreasing (fresh winds from the NW on Wed afternoon, calm by Fri night). | Days 5-7 Weather SummaryMostly dry. Warm (max 33°C on Sun morning, min 21°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 6 | WNW 10 | WNW 10 | NW 6 | NW 10 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 8 | NW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 221 | 418 | 247 | 164 | 210 | 96 | 54 | 42 | 38 | 54 | 52 | 127 | 374 | 435 | 298 | 198 | 117 | 76 | 177 | 170 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-off | glassy | on | glassy | cross-off | on | glassy | cross-off | on | glassy | glassy | on | glassy | cross | cross-on | cross |
High Tide | 2:31AM2.74m | 2:45PM3.08m | 3:10AM2.85m | 3:24PM3.13m | 3:47AM2.90m | 4:01PM3.09m | 4:22AM2.88m | 4:37PM2.97m | 4:56AM2.79m | 5:12PM2.78m | 5:29AM2.66m | 5:47PM2.55m | ||||||||
Low Tide | 8:23PM0.07m | 8:31AM0.17m | 9:02PM-0.04m | 9:10AM0.06m | 9:38PM-0.07m | 9:47AM0.03m | 10:12PM-0.01m | 10:22AM0.08m | 10:44PM0.11m | 10:57AM0.19m | 11:16PM0.28m | 11:32AM0.36m | 11:48PM0.49m | |||||||
 |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — |
 | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 18 | 25 | 25 | 19 | 26 | 25 | 21 | 32 | 29 | 22 | 33 | 27 | 22 | 30 | 26 | 25 | 29 | 26 | 20 |
Feels °C | 17 | 14 | 22 | 22 | 18 | 23 | 23 | 22 | 30 | 27 | 23 | 31 | 24 | 24 | 28 | 24 | 24 | 26 | 24 | 20 |
Swell 1 Height (m) Direction Period (s) | NW 13 | NNW 11 | NW 8 | NW 10 | NW 7 | NW 7 | NW 7 | NW 6 | NW 7 | WNW 10 | NW 6 | NW 10 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 12 | NW 11 |
| kJ | 7 | 12 | 247 | 74 | 210 | 96 | 54 | 42 | 46 | 54 | 52 | 127 | 374 | 435 | 298 | 198 | 117 | 76 | 6 | 60 |
Swell 2 Height (m) Direction Period (s) | — | N 13 | NW 10 | NNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | WNW 10 | W 6 | WNW 9 | NNW 14 | W 9 | SSE 10 | S 11 | WNW 9 | NW 4 | WNW 8 | NW 12 | NNW 9 |
| kJ | — | 4 | 50 | 25 | 40 | 38 | 28 | 8 | 38 | 1 | 46 | 127 | 40 | 18 | 2 | 26 | 14 | 24 | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | — | W 13 | N 12 | W 8 | — | W 7 | W 7 | WNW 8 | S 10 | S 9 | NW 16 | WNW 9 | SSE 10 | — | — | S 11 | WNW 8 | W 13 | S 10 | — |
| kJ | — | 3 | 11 | 5 | — | 4 | 4 | 7 | 2 | 2 | 40 | 45 | 9 | — | — | 2 | 22 | 3 | 2 | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 8 | — | NW 8 | — | — | — | — | — | NW 7 | — | — | — | — | — | WNW 3 | — | NW 4 | NW 8 | NW 6 |
| kJ | 221 | 418 | — | 164 | — | — | — | — | — | 46 | — | — | — | — | — | 2 | — | 9 | 177 | 170 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 460 | 9 | 9 | 587 | 0 | 0 | 77 | 1 | 1 | 70 | 0 | 0 | 39 | 0 | 0 | 77 | 0 | 9 | 542 | 85 |
Best forecast wave conditions in Portugal - Alentejo | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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Information about the Cogumelo Surf forecast
The above surf forecast table for Cogumelo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cogumelo can be found by selecting the local surf guide option on the grey menu. Our Cogumelo 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 (Cogumelo) 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 Cogumelo 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.
Cogumelo is 29 km (18 miles) from Sines. If you plan a holiday in Portugal - Alentejo, look for hotels and other accommodation in Sines. Sines has rooms for a wide range of budgets as well as car hire and transport links.
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