Surf Forecasts:
Cogumelo surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 4AM (local time) - 3.5ft (1.1m), 14s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 10AM (local time) - 6ft (1.9m), 12s period, WNW swell with 964 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 7AM (local time) - 4ft (1.2m), 10s 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 Saturday (Aug 22) at 7AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.4m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cogumelo in the next 16 days are 1.9m 12s and forecast to arrive on Sunday (Aug 23) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 10s period and expected on Saturday (Aug 22) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 22nd Aug) | 4ft (1.2m) 10s |
| Best Surf | 4AM (Sun 23rd Aug) | 3.5ft (1.1m) 14s |
| Most Powerful | 10AM (Sun 23rd Aug) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright, let’s be real. This is a tough one. I’ve looked at the charts for your area, and the only spot that’s even showing a pulse for the next two weeks is Cogumelo. And even then, it’s a long, slow grind.
The first real chance of something decent is on Sunday morning, August 23rd. The swell is running 6ft out of the west-northwest, with a solid 12-second period. That’s a proper groundswell, and the combined energy is a strong 971, so there’s plenty of power in the water. The wind is a light cross-off shore from the south, so the waves should be clean. That’s your one standout session. The window is short though, because by Sunday afternoon, the wind swings onshore and the quality tanks.
After that, it’s a rough ride. For the rest of the month, the wind is almost always onshore or cross-on, the swell period gets short, and the energy drops. There are a couple of mornings, like the 28th and 29th, where the swell bumps back up to about 6ft or 5ft, but the wind is still cross-shore, and the conditions are only marginal. The wave energy is moderate, around 707 and 549.
Heading into September, the swell drops under 3ft, the period is short, and the wind is either onshore or cross-on. The combined energy is weak, between 75 and 283. It’s a long, blank stretch with nothing to recommend.
So, if you’re chasing it, your one shot is Sunday morning the 23rd at Cogumelo. That 6ft swell is a bit much for beginners, and with that long period, it might be a bit closed out on a beach break, but it’s the only game in town. The water temp is about average for the time of year.
Other than that, it’s a dry spell. This area can go quiet, and this is a long stretch of poor surf. You might be better off looking at the wind for a kite session, because the waves won’t be worth the fight.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sun morning, min 15°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 24°C on Mon morning, min 19°C on Sun night). Winds decreasing (fresh winds from the SSW on Mon morning, light winds from the S by Mon night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 7 | NW 7 | NW 10 | NW 10 | WNW 9 | WNW 16 | WNW 12 | WNW 11 | W 10 | WSW 8 | WSW 8 | WSW 8 | W 7 | W 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 9 | NW 9 | NW 9 |
Wave Graph | |||||||||||||||||||||
194 | 189 | 480 | 245 | 25 | 146 | 964 | 778 | 612 | 468 | 475 | 324 | 168 | 107 | 66 | 70 | 108 | 217 | 280 | 371 | 589 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | on | glassy | cross-off | cross-on | cross-off | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross |
High Tide | 9:37AM1.97m | 10:30PM1.83m | 11:09AM1.97m | 11:58PM1.89m | 12:23PM2.10m | 00:58AM2.03m | 1:14PM2.28m | 1:41AM2.20m | 1:54PM2.47m | 2:16AM2.36m | 2:28PM2.66m | 2:49AM2.51m | 3:00PM2.81m | 3:20AM2.63m | |||||||
Low Tide | 4:02PM1.08m | 4:33AM1.13m | 5:42PM1.04m | 6:01AM1.05m | 6:49PM0.89m | 6:58AM0.88m | 7:34PM0.71m | 7:39AM0.70m | 8:10PM0.53m | 8:14AM0.52m | 8:42PM0.37m | 8:46AM0.37m | 9:13PM0.23m | ||||||||
6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | |
— | 8:20 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | |
mm | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 18 | 21 | 21 | 18 | 24 | 23 | 20 | 24 | 23 | 21 | 23 | 23 | 20 | 22 | 22 | 20 | 22 | 21 | 19 |
Feels °C | 20 | 18 | 16 | 19 | 19 | 19 | 23 | 21 | 20 | 21 | 20 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NNW 11 | WNW 9 | NW 10 | NNW 10 | NW 9 | WNW 12 | WNW 11 | W 10 | N 8 | N 8 | WSW 8 | W 7 | W 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 9 | NW 9 | NW 9 |
54 | 143 | 33 | 245 | 164 | 83 | 964 | 778 | 612 | 1 | 1 | 324 | 168 | 107 | 66 | 70 | 108 | 217 | 280 | 371 | 589 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | SSW 14 | WNW 9 | WNW 9 | WNW 16 | NNW 8 | NNW 8 | NNW 8 | SW 13 | SW 13 | N 8 | N 7 | SW 12 | W 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | S 10 |
25 | 15 | 18 | 42 | 25 | 146 | 23 | 13 | 6 | 7 | 6 | 1 | 1 | 6 | 2 | 5 | 5 | 5 | 5 | 4 | 2 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 14 | — | SSW 14 | SSW 14 | WNW 8 | SW 13 | SW 13 | SW 13 | — | — | SW 12 | SW 12 | N 7 | SW 12 | N 16 | N 15 | N 13 | SW 11 | — | — |
21 | 19 | — | 20 | 20 | 24 | 7 | 7 | 7 | — | — | 6 | 6 | 1 | 6 | 5 | 4 | 3 | 5 | — | — | |
Wind waves Height (m) Direction Period (s) | NW 7 | NW 7 | NW 10 | — | — | — | — | — | — | WSW 8 | WSW 8 | — | — | — | — | — | — | — | — | — | — |
194 | 189 | 480 | — | — | — | — | — | — | 468 | 475 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 542 | 9 | 9 | 77 | 0 | 0 | 271 | 0 | 361 | 304 | 11 | 11 | 192 | 11 | 192 | 73 | 69 | 69 | 77 | 9 |
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.











