
Surf Forecasts:
Cogumelo surf forecast from 5 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 699 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 1AM (local time) - 2.5ft (0.8m), 9s 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 Sunday (Sep 06) at 1AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.5m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cogumelo in the next 16 days are 1.5m 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 2.1m 7s period and expected on Thursday (Sep 10) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 6th Sep) | 2.5ft (0.8m) 9s |
| 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
G’day, Rusty here. Let’s break down the waves at Cogumelo for the next couple weeks. This spot is fairly consistent, but the first week is a bit of a mixed bag with plenty of small, clean windows and choppy afternoons.
The water is 68°F, which is a bit colder than normal for this time of year, so grab a wetsuit.
Our first chance to paddle out is on Saturday, September 5th in the morning. Glassy, light NE breeze, and tiny 3 ft waves from the NW. The energy is weak at 118, so it’s small and clean but nothing special. The afternoon gets onshore and messy.
Sunday, September 6th morning is similar – 3 ft NW swell, cross-off breeze keeps it clean, energy at 115. Afternoon chops up.
Monday, September 7th morning brings some life. 5 ft swell from the WNW with a long 13-second period – that’s proper groundswell energy hitting 730. The wind is cross-shore, so a bit bumpy, but there’s decent power. This is a good option for intermediates, though the long period might make it a bit straight at this beach break. Afternoon is a write-off.
Tuesday, September 8th morning holds 5 ft from the NW with an 11-second period and moderate energy (538). Cross-shore wind keeps it from being perfect, but it’s surfable. The rest of the week is a grind – small, choppy, or onshore.
The standout window opens mid-month. Monday, September 14th morning is a beauty – glassy, 3 ft from the NW, 10-second period, clean as a whistle, energy at 210. This is the kind of morning you call in sick for.
Then, Wednesday, September 16th morning is the big one. 6 ft NW groundswell with a 12-second period, and the energy is massive at 1406. The wind is glassy from the SW. This is excellent surf, but at 6 ft it’s getting too big for beginners – it’s for the experienced crew. The afternoon swell hits 8 ft, expert territory and lumpy with an onshore breeze.
Thursday, September 17th morning is still pumping – 7 ft from the NW, 10-second period, glassy, very good. Energy is 747. If you missed Wednesday, this is your next best shot.
Friday, September 18th morning is another clean one with 4 ft and a cross-off breeze, energy at 322. Good, fun waves.
After that, the swell drops off and winds become onshore, with small, ordinary waves through the weekend. The best on offer is definitely the Wednesday, September 16th morning session – big, clean, glassy groundswell. The Monday, September 14th morning is a close second for a fun, clean, smaller day.
No crowds data for Cogumelo, so you’ll have to suss it out yourself.
Rusty.
Short Range ForecastMostly dry. Warm (max 34°C on Sat morning, min 18°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 16°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 | NW 9 | WNW 9 | NW 9 | NW 8 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | NW 11 | WNW 10 | NW 9 | NW 8 | NW 6 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 |
Wave Graph | |||||||||||||||||||||
115 | 118 | 103 | 115 | 160 | 434 | 633 | 655 | 401 | 538 | 200 | 118 | 69 | 144 | 453 | 299 | 262 | 284 | 143 | 121 | 198 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 10:21PM2.06m | 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 | ||||||||
Low Tide | 3:53PM0.83m | 4:31AM0.91m | 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 | ||||||||
7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | |
— | 7:59 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 34 | 30 | 25 | 33 | 28 | 26 | 31 | 28 | 23 | 24 | 23 | 20 | 22 | 22 | 18 | 25 | 23 | 21 | 25 | 25 | 21 |
Feels °C | 32 | 28 | 25 | 31 | 25 | 25 | 28 | 25 | 22 | 21 | 20 | 20 | 18 | 17 | 14 | 22 | 19 | 17 | 23 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | WNW 9 | NNW 12 | NNW 12 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | NW 11 | WNW 10 | NW 9 | NW 8 | — | N 13 | NW 8 | W 8 | NW 7 | NW 7 | NNW 10 | NW 7 |
115 | 118 | 103 | 255 | 235 | 434 | 633 | 655 | 401 | 538 | 200 | 118 | 69 | — | 14 | 299 | 10 | 284 | 143 | 18 | 198 | |
Swell 2 Height (m) Direction Period (s) | S 12 | NW 16 | NW 14 | NW 9 | WNW 18 | NW 11 | NW 7 | NNW 10 | — | — | — | — | — | — | — | NNW 12 | W 8 | NNW 10 | W 7 | W 7 | W 11 |
3 | 10 | 191 | 115 | 32 | 117 | 97 | 37 | — | — | — | — | — | — | — | 56 | 5 | 42 | 4 | 4 | 3 | |
Swell 3 Height (m) Direction Period (s) | N 17 | S 12 | S 12 | — | — | WNW 9 | NNW 10 | — | — | — | — | — | — | — | — | NW 10 | — | — | NNW 10 | — | S 13 |
5 | 3 | 3 | — | — | 17 | 63 | — | — | — | — | — | — | — | — | 23 | — | — | 10 | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | NW 4 | — | NW 8 | NW 6 | — | NW 6 | NW 7 | NW 6 | NW 5 | NW 5 | NW 4 | NW 6 | NW 8 | — | NW 8 | — | — | NW 7 | — |
— | — | 9 | — | 160 | 136 | — | 108 | 178 | 88 | 72 | 55 | 16 | 144 | 453 | — | 262 | — | — | 121 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 73 | 0 | 0 | 77 | 9 | 9 | 73 | 9 | 9 | 688 | 9 | 443 | 257 | 85 | 85 | 549 | 275 | 390 | 443 | 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.










