Surf Forecasts:
Reef surf forecast from 13 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 7AM (local time) - 6.5ft (2.0m), 12s period, NW swell with 1,074 kJ wave energy.
Best Forecast Surf Conditions for Reef this week:
The most powerful waves expected at Reef in the next 16 days are 2.0m 12s and forecast to arrive on Thursday (Aug 20) at 7AM. Winds are predicted to be onshore 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 16) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Thu 20th Aug) | 6.5ft (2.0m) 12s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what we've got cookin'.
Honestly, for the first week or so, it’s pretty grim out at Reef. The whole stretch from Thursday the 13th right through to around the 23rd is just one long, frustrating gap. You'd be hard-pressed to find anything worth paddling out for. The swell is tiny, the wind is mostly cross-shore and lumpy, and the scores reflect that complete lack of quality. It's going to be a frustrating run of flat, choppy days.
Then things start to shift around the 24th of August. Monday morning brings a bit of life with a 4 ft swell from the NW, but it’s blowing onshore, keeping things messy. Not a standout, but at least there’s some bump to look at. The real potential arrives around Tuesday the 25th. The morning shows a 6 ft NW swell, period around 9 seconds, and the combined energy jumps right up to 529 – that’s a solid moderate pulse pushing in. The catch is the wind is cross-onshore, which kills the quality, giving it only a marginal look. That bigger swell could be a handful for anyone but the experienced crew.
Right at the end of the run, Friday the 27th and into the 28th, we see the swell stepping back down. The morning of the 28th has a 5 ft WNW swell, still with a light onshore breeze. It’s a marginal call, but it’s the closest thing to a window for a paddle that this outlook gives us. It's not ideal, but it’s the best on offer in a pretty bleak picture.
This is a spot that needs the planets to align. For now, it’s not looking good. Keep an eye on the charts because this run of nothing can't last forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Thu afternoon, min 19°C on Wed night). Winds increasing (light winds from the N on Wed night, strong winds from the NNW by Sat afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 20°C on Sat night). Winds decreasing (strong winds from the NNW on Sat night, calm by Mon morning). | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 | WNW 10 | WNW 9 | WNW 9 | NNW 7 | S 18 | SW 18 | S 18 | SW 16 | SW 16 | SW 15 | SW 18 | SW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | NW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 154 | 237 | 175 | 130 | 124 | 0 | 6 | 12 | 6 | 10 | 11 | 9 | 12 | 9 | 26 | 25 | 24 | 21 | 20 | 20 | 286 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-on | cross | glassy | on | cross-off | cross-off | cross-on | cross-on | cross | cross-on | on |
High Tide | 4:01PM3.26m | 4:27AM2.93m | 4:42PM3.25m | 5:07AM2.90m | 5:22PM3.14m | 5:45AM2.80m | 6:01PM2.95m | 6:23AM2.67m | 6:40PM2.71m | 7:02AM2.50m | 7:21PM2.44m | 7:44AM2.32m | 8:08PM2.18m | ||||||||
Low Tide | 9:45AM0.08m | 10:18PM-0.10m | 10:26AM0.04m | 10:58PM-0.07m | 11:05AM0.09m | 11:36PM0.05m | 11:44AM0.20m | 00:12AM0.24m | 12:23PM0.38m | 00:49AM0.46m | 1:04PM0.59m | 1:27AM0.69m | 1:50PM0.80m | 2:12AM0.91m | |||||||
 |  |  | | |  | | | | | | | | | | |  |  | | | | |
 | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — |
 | — | 8:35 | — | — | 8:34 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — |
Temp °C | 22 | 23 | 20 | 22 | 22 | 21 | 21 | 21 | 20 | 24 | 24 | 21 | 25 | 24 | 23 | 27 | 26 | 23 | 23 | 23 | 21 |
Feels °C | 21 | 22 | 18 | 20 | 19 | 18 | 18 | 17 | 15 | 24 | 23 | 21 | 26 | 25 | 23 | 26 | 25 | 25 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | — | S 18 | SW 18 | S 18 | NNW 9 | SW 16 | SW 15 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 |
| kJ | 154 | 237 | 175 | 130 | 124 | — | 6 | 12 | 6 | 934 | 11 | 9 | 689 | 488 | 298 | 344 | 251 | 155 | 151 | 125 | 111 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | NNW 9 | — | — | — | — | — | — | — | SW 16 | — | — | SW 18 | SW 15 | WNW 8 | W 8 | SSW 16 | WNW 8 | WNW 8 | WNW 8 | NW 13 |
| kJ | 18 | 16 | — | — | — | — | — | — | — | 10 | — | — | 12 | 9 | 6 | 5 | 24 | 6 | 12 | 6 | 286 |
Swell 3 Height (m) Direction Period (s) | NW 12 | — | — | — | — | — | — | — | — | — | — | — | SW 15 | — | SSW 16 | SSW 16 | — | SSW 15 | SSW 14 | SSW 14 | WNW 9 |
| kJ | 37 | — | — | — | — | — | — | — | — | — | — | — | 8 | — | 26 | 25 | — | 21 | 20 | 20 | 28 |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 9 | — | NNW 8 | NNW 8 | — | — | — | — | SW 2 | — | S 3 | SSW 3 | — |
| kJ | 23 | 33 | 72 | 135 | 176 | 431 | 1032 | 964 | 1082 | — | 665 | 827 | — | — | — | — | 1 | — | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 221 | 35 | 124 | 471 | 224 | 241 | 567 | 193 | 2 | 222 | 34 | 1 | 213 | 1 | 1 | 213 | 1 | 1 | 143 | 14 |
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.
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