Surf Forecasts:
Cogumelo surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 7AM (local time) - 4.5ft (1.3m), 14s period, WNW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 1PM (local time) - 5ft (1.5m), 12s period, WNW swell with 711 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 7AM (local time) - 4.5ft (1.3m), 14s period with WNW 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 Monday (Sep 07) at 7AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.6m and 10s. Another secondary swell of 1.0m and 6s is also forecast. 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 1.5m 12s and forecast to arrive on Monday (Sep 07) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 9s period and expected on Friday (Sep 11) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 7th Sep) | 4.5ft (1.3m) 14s |
| Best Surf | 7AM (Mon 7th Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 1PM (Mon 7th Sep) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright, folks, let’s talk Cogumelo. Looking through the next couple of weeks, it’s a real mixed bag, mostly with small, chopped-up waves and a lot of waiting. There are a couple of windows that could give us something fun, but you're gonna have to pick your spots.
Water temp is running 68°F, just a hair colder than normal for this time of year.
Sunday the 6th is a total dud. Flat and messy. Don’t bother. Monday the 7th sees a pulse of energy roll in – we’ve got a decent 5ft swell from the WNW with a long 13-second period, pumping some serious energy (729). But the wind is cross-shore and dirty. The morning is just "marginal" and the afternoon gets blown out. For the experienced crew, early Monday might offer a few decent, lumpy ones, but beginners should sit it out.
After that, it’s a flat, blown-out wasteland from Tuesday the 8th through to Saturday the 12th. Mostly tiny waves under 3ft with the wind coming from the wrong direction. A couple of glassy mornings, but nothing to even paddle for.
Sunday the 13th morning is one of those "almost" days. The swell is only 2ft from the NW, but the period is super long at 14 seconds, giving it surprising push (176). It’s glassy. You’ll get some long, slow lines on the better sets. Fine for a longboard, but don't expect any power.
The real standout is Sunday the 20th of September. The morning looks prime – 4ft of NW swell at 10 seconds with glassy conditions and good energy (216). The forecast says "expect good surf conditions." This is your call. The swell matches the spot perfectly, and with clean conditions, you'll be scoring some fun, rideable walls. Crowds can be an issue though ("often"), so get in early.
Monday the 21st of September morning is also worth a look. It’s a bit smaller at 2ft, but the period jumps back to 12 seconds giving it some extra push (220), and it’s glassy again. A sneaky good one before the afternoon wind ruins it.
Bottom line: the first week is a washout. Set your sights on the mornings of Sunday the 20th and Monday the 21st of September. That’s your best bet for a clean, fun session.
Stay patient, Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Sun morning, min 18°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Fri morning, min 16°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 9 | WNW 8 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | WNW 10 | NW 10 | NW 9 | NW 8 | NW 6 | NW 7 | NW 8 | NW 8 | NW 7 | W 7 | W 7 | W 7 | WNW 10 | WNW 10 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 115 | 64 | 434 | 633 | 655 | 427 | 270 | 459 | 97 | 54 | 165 | 365 | 253 | 282 | 188 | 4 | 4 | 4 | 19 | 35 | 32 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-off | glassy | on | cross-on | glassy | cross-on | cross |
High Tide | 10:59AM2.25m | 11:51PM2.17m | 12:16PM2.46m | 00:57AM2.37m | 1:15PM2.71m | 1:48AM2.58m | 2:03PM2.93m | 2:31AM2.74m | 2:45PM3.08m | 3:10AM2.85m | 3:24PM3.13m | 3:47AM2.90m | 4:01PM3.09m | ||||||||
Low Tide | 5:33PM0.72m | 5:58AM0.77m | 6:45PM0.49m | 7:00AM0.55m | 7:39PM0.26m | 7:49AM0.34m | 8:23PM0.07m | 8:31AM0.17m | 9:02PM-0.04m | 9:10AM0.06m | 9:38PM-0.07m | 9:47AM0.03m | 10:12PM-0.01m | ||||||||
 | |  | |  | | | | | | | | | | | | | | | | | |
 | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 28 | 25 | 31 | 28 | 23 | 24 | 23 | 20 | 21 | 20 | 18 | 28 | 26 | 21 | 29 | 26 | 20 | 29 | 27 | 20 |
Feels °C | 29 | 26 | 24 | 27 | 25 | 22 | 22 | 20 | 19 | 17 | 16 | 15 | 24 | 22 | 22 | 26 | 23 | 20 | 28 | 25 | 22 |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NNW 12 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | NW 9 | NW 8 | NW 14 | NW 11 | NW 8 | NW 8 | NW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 6 | WNW 10 | NW 8 |
| kJ | 255 | 235 | 434 | 633 | 655 | 427 | 270 | 204 | 97 | 54 | 7 | 31 | 253 | 282 | 188 | 109 | 112 | 88 | 26 | 35 | 65 |
Swell 2 Height (m) Direction Period (s) | NW 9 | WNW 8 | NW 11 | NNW 10 | — | NNW 9 | — | — | — | — | — | N 13 | NW 10 | NNW 11 | W 10 | NNW 10 | W 7 | W 7 | WNW 10 | S 10 | WNW 9 |
| kJ | 115 | 64 | 117 | 63 | — | 8 | — | — | — | — | — | 3 | 50 | 43 | 2 | 20 | 4 | 4 | 19 | 8 | 32 |
Swell 3 Height (m) Direction Period (s) | — | WNW 18 | NW 9 | WNW 9 | — | — | — | — | — | — | — | W 13 | NNW 12 | — | — | W 7 | NW 9 | W 8 | NNW 8 | W 7 | NW 11 |
| kJ | — | 32 | 22 | 32 | — | — | — | — | — | — | — | 3 | 28 | — | — | 4 | 3 | 1 | 7 | 1 | 19 |
Wind waves Height (m) Direction Period (s) | — | NW 4 | NW 6 | NW 6 | NW 6 | NW 6 | NW 6 | NW 10 | NW 5 | NW 5 | NW 6 | NW 7 | — | — | — | — | — | — | — | NW 8 | — |
| kJ | — | 19 | 128 | 64 | 86 | 135 | 60 | 459 | 65 | 40 | 165 | 365 | — | — | — | — | — | — | — | 65 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 542 | 9 | 9 | 69 | 9 | 9 | 258 | 9 | 401 | 253 | 9 | 19 | 77 | 0 | 5 | 60 | 11 | 11 | 69 | 11 |
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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