Surf Forecasts:
The Reef surf forecast from 22 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 7AM (local time) - 5ft (1.5m), 7s period, WNW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 8ft (2.5m), 12s period, NW swell with 1,818 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7AM (local time) - 5ft (1.5m), 7s period with WNW swell.
Best Forecast Surf Conditions for The Reef this week:
The surf forecast for The Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 7AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Reef in the next 16 days are 2.5m 12s and forecast to arrive on Friday (Aug 28) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Monday (Aug 24) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 25th Aug) | 5ft (1.5m) 7s |
| Best Surf | 7AM (Tue 25th Aug) | 5ft (1.5m) 7s |
| Most Powerful | 1PM (Fri 28th Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for The Reef over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you—this forecast for The Reef is a proper mixed bag, and for the most part, it’s a frustrating one. There’s surf on the table, but the conditions are going to fight you every step of the way. We’ve got a few windows where things might just come together, but you’ll need to be patient and pick your moments.
The Reef is a reef break that’s advanced-level only, fairly consistent, and exposed to the swell. It likes a NW direction best. The water temp is sitting about average for this time of year, so nothing out of the ordinary there.
Our first real chance to get wet isn’t until Tuesday the 25th of August, in the morning. The swell is a modest 4 ft from the W, with a period of 7 seconds. It’s a short-period windswell, not much grunt, and the combined wave energy is weak at 159. The real story, though, is the wind—glassed out out of the S at just 3 mph. That’s a major positive. The reef will be clean, but the wave quality is only “surfable but very ordinary.” It’s an option if you’re desperate for a slide, but don’t expect much.
After that, things turn messy again. Thursday the 27th and Friday the 28th bring a bit more size, with swell from the NW around 5 ft to 6 ft and periods creeping up to 9-10 seconds. The issue is the cross-shore wind, blowing 16-19 mph, lumping it up. The combined energy jumps to 386-554, so there’s some push, but it’s marred by lumpy cross-chop. Not worth paddling out unless you’re after a fight.
Now, here’s where it gets interesting. Saturday the 29th of August, morning session. Swell builds to 8 ft from the NW, period 10 seconds—a proper groundswell. The combined energy is strong at 1039. The wind is cross-shore from the N at 16 mph, so it’s still lumpy, but the forecast calls it “marginal surf” with questionable tide. This is the standout of the first week, but it’s far from perfect. That NW swell direction is exactly what The Reef likes, and the period is decent, so the waves should have some shape. But at over 8 ft? Nah, this is expert territory only—too big for anyone but the serious crew. The constant cross wind is a buzzkill, but if you’re an advanced surfer who can handle lumpy conditions, this Saturday morning is the best we’ve got early on.
Looking further ahead, there’s a glimmer of hope. On Thursday the 3rd of September, the morning brings a 5 ft NW groundswell with a very long period of 12 seconds. Combined wave energy is very strong at 1088. The wind is cross-shore from the N at 16 mph, so still lumpy, but that long period means the waves will have real power and long gaps between sets. It’s a marginal call, though. Then on Friday the 4th of September, the swell jumps to 7 ft from the NW, period 12 seconds, and the combined energy is even stronger at 1308 (morning) and 1330 (afternoon). Wind stays cross-shore at 16 mph. This is the best-looking window of the entire 16 days, but it’s 13 days out, so take it with a grain of salt. At 7 ft with that long period, it’s still an expert swell, but the direction is right, and if the wind cleans up even a little, The Reef could fire. That long period will make it break nicely on the reef, but beware—beach breaks nearby would be closing out.
Other than that, it’s a lot of poor surf with fresh cross-shore winds and lumpy chop. There are no other standout sessions. The gaps between the few worthy mentions are big—days and days of nothing worth paddling for. This reef demands respect, and this forecast is mostly a wait-and-watch situation. The one true standout is Saturday the 29th of August morning, but for real quality, keep an eye on that early September window.
Rusty.
Short Range ForecastHeavy rain (total 32mm), heaviest during Sun morning. Warm (max 22°C on Sun afternoon, min 19°C on Sat morning). Winds decreasing (strong winds from the SSW on Sun night, calm by Mon night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed morning. Warm (max 22°C on Tue afternoon, min 18°C on Thu night). Winds increasing (calm on Tue morning, fresh winds from the WNW by Thu morning). | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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) | NNW 10 | NNW 9 | WNW 13 | WNW 11 | W 10 | WSW 9 | WSW 8 | WSW 8 | W 7 | WNW 7 | WNW 7 | WNW 7 | W 6 | W 7 | NW 8 | WNW 8 | WNW 8 | NW 9 | NW 12 | NW 11 | NNW 10 |
Wave Graph | |||||||||||||||||||||
394 | 248 | 1211 | 718 | 630 | 807 | 909 | 534 | 295 | 153 | 147 | 85 | 101 | 168 | 256 | 361 | 363 | 673 | 1674 | 1556 | 788 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross | cross | cross-on | on | on | glassy | on | cross-on | cross-on | on | on | on | cross-on | cross | cross | cross | cross |
High Tide | 11:22AM2.03m | 00:11AM1.94m | 12:36PM2.16m | 1:11AM2.08m | 1:28PM2.34m | 1:54AM2.25m | 2:08PM2.54m | 2:30AM2.42m | 2:43PM2.72m | 3:03AM2.57m | 3:15PM2.87m | 3:34AM2.69m | 3:46PM2.98m | ||||||||
Low Tide | 5:56PM1.07m | 6:14AM1.07m | 7:03PM0.92m | 7:12AM0.91m | 7:48PM0.74m | 7:53AM0.72m | 8:24PM0.55m | 8:28AM0.54m | 8:57PM0.38m | 9:01AM0.39m | 9:28PM0.24m | 9:32AM0.26m | 9:59PM0.14m | ||||||||
6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | |
— | 8:22 | — | — | 8:22 | — | — | 8:20 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:15 | — | |
mm | — | — | — | 19 | 1 | 8 | 3 | 1 | — | — | — | — | 4 | — | — | 2 | — | — | — | — | — |
Temp °C | 20 | 21 | 20 | 21 | 22 | 21 | 22 | 22 | 21 | 21 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 20 | 18 |
Feels °C | 19 | 20 | 20 | 17 | 19 | 17 | 19 | 20 | 22 | 21 | 22 | 22 | 20 | 19 | 19 | 16 | 16 | 15 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 9 | WNW 13 | WNW 11 | W 10 | NNW 8 | N 8 | NNW 8 | W 7 | WNW 7 | WNW 7 | WNW 7 | NNW 6 | SW 11 | NW 8 | WNW 8 | WNW 8 | NW 9 | NW 12 | NW 11 | NNW 10 |
394 | 248 | 1211 | 718 | 630 | 12 | 5 | 12 | 295 | 153 | 147 | 85 | 15 | 5 | 256 | 361 | 363 | 673 | 1674 | 1556 | 788 | |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | NNW 9 | N 8 | N 8 | SSW 13 | S 13 | SW 13 | N 7 | SW 12 | SW 12 | NW 11 | NW 10 | — | W 7 | SW 11 | SW 11 | SW 11 | S 10 | — | — |
38 | 39 | 106 | 49 | 33 | 17 | 3 | 7 | 9 | 6 | 6 | 5 | 4 | — | 100 | 5 | 5 | 4 | 2 | — | — | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | — | — | SW 13 | SW 12 | — | — | W 10 | W 9 | — | SW 11 | — | — | — | — | — | — |
20 | 20 | 20 | 18 | 17 | — | — | 6 | 6 | — | — | 2 | 2 | — | 5 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 5 | S 6 | WSW 9 | WSW 8 | WSW 8 | — | — | — | WSW 6 | W 6 | W 7 | — | — | — | — | — | NNW 4 | — |
— | — | — | 97 | 149 | 807 | 909 | 534 | — | — | — | 30 | 101 | 168 | — | — | — | — | — | 17 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 27 | 406 | 39 | 112 | 50 | 137 | 412 | 267 | 29 | 0 | 489 | 52 | 27 | 411 | 26 | 30 | 403 | 26 | 30 | 231 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the The Reef Surf forecast
The above surf forecast table for The Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Reef can be found by selecting the local surf guide option on the grey menu. Our The 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 (The 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 The 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.
The Reef is 15 km (9 miles) from the city of Sintra. If you plan a holiday in Ericeira, look for hotels and other accommodation in Sintra. Sintra has rooms for a wide range of budgets as well as car hire and transport links.











