Surf Forecasts:
Cogumelo surf forecast from 8 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 12s period, NW swell with glassy winds.
- Most powerful swell: Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 12s period, NW swell with 503 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 1.3m 12s and forecast to arrive on Sunday (Sep 13) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Saturday (Sep 12) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 10th Sep) | 5ft (1.6m) 8s |
| Best Surf | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 12s |
| Most Powerful | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s happening at Cogumelo.
The water temp is about 69°F, which is running a little cooler than normal for this time of year, but nothing drastic.
We’re in a flat spell to start. The next few days are poor. The swell is around 3ft to 5ft, coming from the WNW with short, weak 8 to 10-second periods. Cross and cross-onshore winds have it all chopped out. Tuesday and Wednesday are a total loss. Thursday the 10th morning might show 5ft from the NW, but the cross wind kills it. Don’t bother.
The first real chance to get wet is Friday the 11th morning. Small waves at about 4ft from the NW with a short 7-second period, so it’ll be weak and a bit sloppy. But the wind turns light cross-off from the NNE at just 3 mph, cleaning things right up. It’s surfable, but don’t expect any power, the energy is low (132).
Saturday the 12th morning is a copy-paste: 3ft from the NW, clean with a light cross-off breeze from the NE. Ordinary but doable.
Now, here’s the real one to aim for. Monday the 14th morning is the standout. A clean 4ft groundswell from the NW with a solid 11-second period, giving the waves proper shape and energy. The wind is glassy from the NNW at just 3 mph. It will be butter-smooth. The energy is solid (328). This is your morning. The break is fairly consistent, so you’ll get waves, but crowds are often, so count on sharing the peak.
The week after goes quiet again with mostly onshore wind. The next one to watch is Sunday the 20th morning. It’s further out, so don’t bank on it, but there’s a chance of light cross-off winds from the NE with 3ft from the NW at 11 seconds. It’s called “good surf conditions” in the forecast.
The very last entry, Wednesday the 23rd afternoon, shows a spike in energy to 765 (strong) with a 4ft NW swell and a very long 17-second period. That’s some serious groundswell. But the wind is onshore from the WSW at 9 mph, so it will be a messy, bumpy mess unless that wind changes. Keep an eye on it.
Bottom line: the clear winner is Monday 14th morning. The backup is Sunday 20th morning. Between those, we’ve got long gaps of 2-3 days with no real surf. It’s a spotty run, typical for this area.
Catch you on the sand,
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu morning, min 16°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 33°C on Sat morning, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | WNW 10 | WNW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 6 | NW 7 | WNW 10 | WNW 9 | NW 10 | NW 12 | NW 12 | NW 11 | NW 11 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 270 | 200 | 118 | 82 | 291 | 407 | 270 | 160 | 210 | 128 | 67 | 116 | 73 | 51 | 46 | 157 | 456 | 486 | 320 | 258 | 24 |
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-off | cross-off | on | glassy | cross-off | on | glassy | cross | on | cross-off | glassy | cross-on | glassy |
High Tide | 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 | 4:22AM2.88m | 4:37PM2.97m | 4:56AM2.79m | 5:12PM2.78m | ||||||||
Low Tide | 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 | 10:22AM0.08m | 10:44PM0.11m | 10:57AM0.19m | 11:16PM0.28m | ||||||||
 | |  | | |  | | | | | | | | | | | | | | | | |
 | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — |
 | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 20 | 22 | 21 | 18 | 27 | 25 | 20 | 26 | 24 | 21 | 33 | 30 | 22 | 31 | 26 | 23 | 28 | 27 | 23 |
Feels °C | 23 | 21 | 19 | 18 | 17 | 15 | 24 | 22 | 19 | 24 | 22 | 21 | 31 | 27 | 23 | 28 | 24 | 22 | 26 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | NW 9 | NW 8 | NW 13 | NW 11 | NW 8 | NW 10 | NW 7 | NW 7 | NNW 9 | NW 6 | NW 7 | WNW 10 | NNW 8 | NW 10 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 |
| kJ | 270 | 200 | 118 | 82 | 7 | 19 | 270 | 74 | 210 | 128 | 17 | 116 | 73 | 51 | 101 | 157 | 456 | 486 | 320 | 258 | 104 |
Swell 2 Height (m) Direction Period (s) | NW 6 | — | — | — | — | N 13 | NW 10 | NNW 11 | NNW 10 | NNW 10 | W 7 | W 11 | WNW 10 | NW 18 | WNW 9 | NW 13 | WNW 9 | SSE 8 | S 11 | S 11 | WNW 8 |
| kJ | 38 | — | — | — | — | 4 | 50 | 25 | 40 | 38 | 4 | 2 | 38 | 12 | 46 | 144 | 27 | 6 | 2 | 2 | 24 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 13 | N 12 | W 11 | — | W 7 | W 9 | S 13 | S 13 | S 12 | NW 16 | WNW 9 | WNW 9 | — | — | — | S 10 |
| kJ | — | — | — | — | — | 3 | 11 | 2 | — | 4 | 2 | 3 | 3 | 3 | 64 | 46 | 27 | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | NW 5 | NW 5 | NW 4 | NW 8 | NW 8 | — | NW 8 | — | — | NW 7 | — | — | NNW 8 | — | — | — | — | SSE 8 | — | — |
| kJ | — | 51 | 53 | 21 | 291 | 407 | — | 160 | — | — | 67 | — | — | 101 | — | — | — | — | 6 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 443 | 9 | 384 | 460 | 9 | 9 | 587 | 0 | 0 | 77 | 0 | 0 | 73 | 1 | 9 | 42 | 0 | 0 | 46 | 5 |
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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