Surf Forecasts:
Reef surf forecast from 19 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 7AM (local time) - 2ft (0.6m), 9s period, WNW swell with 64 kJ wave energy.
Best Forecast Surf Conditions for Reef this week:
The most powerful waves expected at Reef in the next 16 days are 0.6m 9s and forecast to arrive on Thursday (Aug 20) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Sunday (Aug 23) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Thu 20th Aug) | 2ft (0.6m) 9s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, grab your wettie, ‘cause I’m gonna walk you through the next couple of weeks. To be honest, it’s a pretty grim stretch ahead. We’ve got a long run of tiny, messy surf and shifting winds that aren’t doing us any favors.
The window kicks off on the 18th of August with practically nothing on offer. We’re talking ankle-biters at best, with a weak 0.7ft SSW groundswell and a cross-onshore breeze. The water temp is 68°F, which is about average for this time of year. It’s not going to be worth getting wet for.
The following days don’t get much better. There’s a slight bump to 2ft on the 20th with glassy conditions Thursday morning, but the energy is weak (62) and it’s a short-period swell. That’s the one small window for a clean but tiny wave before the wind picks up and chops it all to bits again. The rest of that week is a write-off. We see a couple of pulses of longer-period energy, but they’re only 0.7ft, so it's just not enough to do anything with. The breeze stays fresh and cross-shore, keeping the surface lumpy.
We then hit a proper dead stretch from the 23rd through the 25th, where the swell drops to almost nothing. The guidance shows next to no energy directed our way; it’s a true flat spell. You can leave the board in the car.
It’s not until the 26th that things start to stir. A new, more powerful swell from the NW starts to build in the afternoon, reaching 4ft but with a short, wind-affected 6-second period. The energy is moderate (151), but the cross-onshore wind will make it a messy, lumpy mess. The 27th sees a bit more size, with 5ft on the afternoon push, but it’s still a short-period swell with a fresh cross-shore wind. This is not surf for the faint of heart; it’s a full-on battle.
After another flat day on the 28th, the real event finally shows up on the 30th of August. We’re looking at 5ft of NW windswell, and the energy jumps to a strong 406. The period is still only 9 seconds, but there’s some push behind it. The wind is still not ideal, with a fresh cross-shore breeze, but it’s rideable. This is the most interesting we’ve seen all week.
That swell carries into the 31st, dropping slightly to 4ft but staying punchy. Then, on the 1st of September, conditions finally clean up a little. The wind eases off to a gentle cross-onshore, and we have a solid 4ft of swell with moderate energy. It’s not perfect, but it’s the cleanest we’ve had all period.
Finally, on the morning of the 2nd of September, we get our one real standout. The wind lightens to a light cross-shore, the swell is still a workable 4ft, but the energy jumps to a very strong 414. It’s a NW groundswell with a 9-second period. This is the best combination of size, power, and (relatively) clean conditions in the entire 16-day forecast. It’s the one day you’d seriously consider calling in sick for.
After that, the wind swings onshore again. It’s a slim window, but for a stretch like this, that morning on the 2nd is pure gold. Keep your eye on it.
Oh, and as for that 5ft on the 27th with the fresh cross-shore – if you’re not into the paddle fight, you might want to check if there’s a kite in the shed. That setup looks way more fun for that.
That’s all from me. Stay patient, keep the wax on, and chase that morning on the 2nd.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 18°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the NNW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 18°C on Fri night). Mainly fresh winds. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | SSW 16 | SSW 15 | SW 14 | NW 10 | WNW 9 | WNW 9 | NNW 5 | W 9 | SSW 15 | SSW 15 | SSW 14 | WNW 9 | WNW 9 | SSW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
Wave Graph | ||||||||||||||||||||
24 | 21 | 33 | 27 | 50 | 62 | 61 | 39 | 21 | 21 | 18 | 25 | 26 | 20 | 18 | 7 | 7 | 7 | 7 | 6 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | on | glassy | glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:21PM2.44m | 7:44AM2.32m | 8:08PM2.18m | 8:37AM2.15m | 9:12PM1.98m | 9:50AM2.03m | 10:42PM1.88m | 11:22AM2.03m | 00:11AM1.94m | 12:36PM2.16m | 1:11AM2.08m | 1:28PM2.34m | 1:54AM2.25m | |||||||
Low Tide | 1:27AM0.69m | 1:50PM0.80m | 2:12AM0.91m | 2:50PM1.00m | 3:15AM1.09m | 4:18PM1.11m | 4:48AM1.16m | 5:56PM1.07m | 6:14AM1.07m | 7:03PM0.92m | 7:12AM0.91m | 7:48PM0.74m | ||||||||
— | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | |
8:29 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 22 | 22 | 20 | 22 | 21 | 19 | 20 | 20 | 18 | 20 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 19 |
Feels °C | 23 | 23 | 23 | 22 | 21 | 20 | 19 | 14 | 15 | 15 | 13 | 16 | 16 | 14 | 17 | 17 | 15 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NNW 5 | WNW 9 | W 9 | NNW 11 | SSW 15 | SSW 14 | WNW 9 | WNW 9 | WNW 9 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
237 | 159 | 94 | 68 | 41 | 24 | 61 | 39 | 242 | 21 | 18 | 25 | 26 | 16 | 7 | 7 | 7 | 7 | 7 | 6 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | WNW 8 | WNW 8 | NW 10 | WNW 9 | WNW 9 | NW 11 | NW 12 | SSW 15 | — | — | SSW 14 | SSW 14 | SSW 14 | SSW 13 | — | — | — | — | — |
24 | 13 | 12 | 27 | 50 | 62 | 30 | 37 | 21 | — | — | 20 | 20 | 20 | 18 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | SSW 15 | SW 14 | WNW 8 | SSW 13 | NNW 12 | SW 13 | NNW 10 | — | — | — | — | — | — | — | — | — | — | — | — |
6 | 21 | 33 | 6 | 17 | 14 | 7 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 3 | — | — | — | — | — | NNW 5 | NNW 7 | NNW 8 | NNW 10 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 7 |
2 | — | — | — | — | — | 59 | 344 | 447 | 961 | 644 | 763 | 707 | 820 | 975 | 597 | 815 | 785 | 476 | 327 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 29 | 1 | 1 | 400 | 0 | 0 | 400 | 400 | 246 | 420 | 234 | 236 | 381 | 224 | 122 | 224 | 192 | 193 | 448 | 34 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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Information about the Reef Surf forecast
The above surf forecast table for Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Reef can be found by selecting the local surf guide option on the grey menu. Our Reef 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 (Reef) 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 Reef 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.
Are you planning a holiday in Ericeira? If you are looking for accommodation near Reef, camping, hotels and holiday cottages in Ericeira, consider staying in Torres Vedras which is 19 km (12 miles) away. Other places in and around Ericeira where you can find information about places to rent, and car hire include Sintra which is 21 km (13 miles) away, Rio de Mouro, Cacem and Loures.











