Surf Forecasts:
Reef surf forecast from 15 Sep 2026:
- Best quality surf: Thursday 17 Sep, 10AM (local time) - 7ft (2.2m), 10s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 10AM (local time) - 7ft (2.2m), 10s period, NW swell with 989 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 10AM (local time) - 7ft (2.2m), 10s period with NW swell.
Best Forecast Surf Conditions for Reef this week:
The surf forecast for Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 10AM. The primary swell is predicted to be 2.2m and 10s period with a secondary swell of 0.1m and 18s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Reef in the next 16 days are 2.2m 10s and forecast to arrive on Thursday (Sep 17) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Wednesday (Sep 16) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 17th Sep) | 7ft (2.2m) 10s |
| Best Surf | 10AM (Thu 17th Sep) | 7ft (2.2m) 10s |
| Most Powerful | 10AM (Thu 17th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, let’s take a look at what’s coming. The first few days are pretty much a total loss. Strong north winds, messy cross-chop, and next to no swell. There’s nothing worth paddling out for until Thursday the 17th of September, so that’s a solid four or five day stretch of flatness.
Thursday morning the 17th at Reef is where things kick off. The wind is a cross-offshore fresh breeze out of the north-northeast, cleaning it right up. You’ve got a big 7 foot north-west swell pushing in, and the wave energy is sitting at 1018 (moderate). Problem is, the forecast says this swell size is probably too big for the break, so it’s for advanced surfers only. Crowds are usually around here, so it won’t be empty.
That pulse drops off quickly and we’re back to tiny, poor surf for the rest of the week and into the weekend. Monday morning the 21st offers a little hope – a 1 foot clean north-west groundswell with a very long 15 second period, just a whisper of east-southeast air. It’s surfable, but nothing to write home about.
The real gem is in the second week. Tuesday morning the 22nd of September is a beauty. Swell size is a solid 4 feet out of the north-west, with a nice 12 second period – that’s proper groundswell. The wind is dead calm, totally glassy. Wave energy is 410 (moderate). This is clean, lined-up surf for the experienced. Wednesday the 23rd stays similar at about 5 feet, but a light north breeze puts a tiny ripple on it. Then Thursday morning the 24th is another glassy winner, with 4 feet of north-west groundswell and not a breath of wind. Pure.
Watch out for Saturday the 26th of September morning, though. Another big pulse – 7 feet out of the west-northwest, very long 15 second period, but the wave energy jumps to a huge 2353 (strong). The forecast says it’s too big for Reef. That’s only for experts, with a fresh cross-shore wind making it lumpy.
Water temperature right now is 65°F, which is a bit colder than normal for this time of year.
For the best session, I’d lock in Tuesday morning the 22nd. Glassy, a strong 4 foot groundswell, clean lines. Thursday morning the 24th is right behind it. Anything over 5 feet gets big here, and over 8 feet is only for the chargers.
No links, just the raw forecast. Keep your eyes on those calm mornings.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 17°C on Tue night). Winds decreasing (strong winds from the N on Tue night, moderate winds from the NNE by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sun morning, min 18°C on Fri night). Winds decreasing (fresh winds from the NNW on Fri afternoon, light winds from the WSW by Sun morning). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 8 | NNW 5 | WNW 11 | S 13 | SW 13 | SW 12 | NW 10 | S 16 | SW 16 | NW 15 | SW 14 | SW 14 | SW 14 | SW 13 | S 13 | S 13 | S 13 | NW 10 | NW 10 | NW 12 | NW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 61 | 75 | 3 | 6 | 6 | 989 | 5 | 10 | 37 | 8 | 8 | 8 | 7 | 3 | 7 | 3 | 385 | 250 | 260 | 503 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | on | cross |
High Tide | 6:02PM2.62m | 6:18AM2.55m | 6:39PM2.37m | 6:56AM2.36m | 7:22PM2.13m | 7:44AM2.16m | 8:22PM1.92m | 8:58AM2.00m | 10:00PM1.81m | 10:42AM1.99m | 11:40PM1.88m | 12:03PM2.12m | 00:41AM2.05m | ||||||||
Low Tide | 11:48AM0.36m | 00:04AM0.50m | 12:25PM0.57m | 00:38AM0.73m | 1:07PM0.80m | 1:19AM0.95m | 2:02PM1.01m | 2:18AM1.13m | 3:32PM1.14m | 4:00AM1.22m | 5:23PM1.11m | 5:40AM1.12m | 6:33PM0.94m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 18 | 18 | 19 | 19 | 21 | 20 | 18 | 21 | 21 | 21 | 28 | 26 | 26 | 29 | 27 | 26 | 28 | 25 | 23 |
Feels °C | 15 | 17 | 13 | 11 | 12 | 14 | 15 | 15 | 13 | 17 | 16 | 17 | 25 | 22 | 23 | 28 | 25 | 23 | 27 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NW 11 | WNW 11 | S 13 | SW 13 | SW 12 | NW 10 | S 12 | SW 16 | NW 15 | NNW 13 | NNW 15 | NNW 14 | NNW 13 | NNW 13 | NNW 12 | NNW 11 | NW 10 | NW 10 | NW 12 | NW 12 |
| kJ | 63 | 33 | 75 | 3 | 6 | 6 | 989 | 3 | 10 | 37 | 299 | 3114 | 2311 | 1520 | 1049 | 835 | 657 | 385 | 250 | 260 | 503 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | S 13 | — | — | S 12 | S 18 | S 16 | S 11 | SW 15 | NNW 19 | SW 14 | SW 14 | SW 13 | S 13 | S 13 | S 11 | S 10 | NW 14 | NW 9 | S 12 |
| kJ | 22 | 13 | 3 | — | — | 3 | 6 | 5 | 3 | 9 | 34 | 8 | 8 | 7 | 3 | 3 | 3 | 2 | 89 | 135 | 3 |
Swell 3 Height (m) Direction Period (s) | WNW 12 | — | — | — | — | — | S 12 | — | — | — | SW 14 | SW 14 | SW 14 | — | — | SW 13 | S 13 | S 12 | S 5 | S 4 | S 12 |
| kJ | 15 | — | — | — | — | — | 3 | — | — | — | 8 | 8 | 8 | — | — | 7 | 3 | 3 | 2 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | NNW 7 | NNW 9 | NNW 9 | NNW 10 | N 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | — | — | — | — | — | — | — | — | WNW 3 | NNW 4 |
| kJ | 15 | 61 | 397 | 1586 | 1494 | 2022 | 399 | 1048 | 1159 | 885 | 499 | — | — | — | — | — | — | — | — | 3 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 598 | 430 | 420 | 585 | 124 | 34 | 599 | 124 | 34 | 222 | 32 | 1 | 38 | 1 | 1 | 188 | 14 | 0 | 43 | 32 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest