Surf Forecasts:
Reef surf forecast from 17 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 2ft (0.6m), 9s period, WNW swell with 62 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 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Friday (Aug 21) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Thu 20th Aug) | 2ft (0.6m) 9s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Hey everybody, Rusty here. I've scanned the charts and the outlook for Reef is a flat-out bummer.
The whole 16-day picture, from Monday afternoon the 16th of August through Monday the 31st, is a long stretch of nothing worth mentioning. We're talking tiny, weak swell, with the combined energy barely scraping into triple digits (max 105) and mostly sitting well below 100. The wind is a constant problem, blowing cross, cross-on, or straight onshore, keeping the surface a mess. It's a proper dry spell.
The closest thing to a pulse comes Saturday afternoon the 22nd of August, with a 3ft swell from the West at 9 seconds and a combined energy reading of 105. But the wind is onshore from the WSW at 15 km/h, which will kill it. With small, poor-quality surf and persistent wind, this setup is honestly better suited for kite surfing than for a traditional surfboard. There are no standouts here. Water temp kicks off at 68°, right about average for this time of year. Save your energy for another week, folks.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 20°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Thu morning, min 19°C on Wed night). Winds increasing (light winds from the NNE on Wed night, fresh winds from the NNW by Thu night). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | W 8 | W 9 | SSW 16 | WNW 8 | SSW 16 | SSW 15 | SW 14 | NW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | W 8 | WNW 8 | WNW 9 | WNW 9 | SSW 13 | WNW 8 | WNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 9 | 26 | 10 | 24 | 21 | 33 | 26 | 49 | 62 | 59 | 27 | 25 | 25 | 35 | 36 | 45 | 26 | 18 | 23 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross |
High Tide | 6:23AM2.67m | 6:40PM2.71m | 7:02AM2.50m | 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 | |||||||
Low Tide | 12:23PM0.38m | 00:49AM0.46m | 1:04PM0.59m | 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 | ||||||||
 | |  | | | | | | |  |  | | | | | | |  |  |  |  | |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 1 | 4 |
Temp °C | 26 | 24 | 21 | 24 | 23 | 21 | 22 | 22 | 20 | 21 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 19 | 18 | 20 | 20 |
Feels °C | 27 | 24 | 23 | 23 | 22 | 24 | 22 | 23 | 21 | 21 | 16 | 14 | 16 | 16 | 16 | 19 | 19 | 18 | 18 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 6 | WNW 9 | WNW 9 | NNW 12 | NNW 11 | WNW 9 | NNW 10 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | NNW 8 | NNW 8 |
| kJ | 352 | 277 | 237 | 322 | 284 | 196 | 131 | 121 | 57 | 62 | 59 | 93 | 226 | 25 | 226 | 36 | 45 | 26 | 14 | 435 | 352 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 9 | W 8 | WNW 8 | SSW 16 | WNW 8 | WNW 8 | NW 10 | WNW 9 | NNW 12 | NW 11 | WNW 9 | WNW 9 | SSW 15 | W 8 | WNW 10 | SSW 14 | SSW 14 | SSW 13 | WNW 8 | WNW 7 |
| kJ | 5 | 6 | 5 | 6 | 24 | 13 | 12 | 26 | 49 | 13 | 31 | 27 | 25 | 21 | 35 | 19 | 20 | 20 | 18 | 23 | 10 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 15 | SSW 16 | SW 16 | WNW 8 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | SSW 15 | SSW 15 | W 12 | WNW 11 | SSW 14 | — | — | — | SW 13 | SW 13 |
| kJ | 9 | 9 | 26 | 10 | 6 | 21 | 33 | 20 | 17 | 17 | 7 | 21 | 21 | 11 | 23 | 20 | — | — | — | 7 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 3 | — | — | — | — | NNW 6 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | — | — |
| kJ | — | — | — | — | 2 | — | — | — | — | 40 | 121 | 325 | 464 | 512 | 273 | 422 | 579 | 489 | 541 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 38 | 2 | 1 | 515 | 1 | 19 | 224 | 32 | 32 | 430 | 265 | 224 | 224 | 130 | 124 | 223 | 32 | 1 | 1 | 14 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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