Surf Forecasts:
Reef surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 12s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 4AM (local time) - 6ft (1.9m), 14s period, NW swell with 1,500 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 12s 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 Sunday (Sep 13) at 10PM. The primary swell is predicted to be 1.3m and 12s period. 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 1.9m 14s and forecast to arrive on Saturday (Sep 19) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 12s |
| Best Surf | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 12s |
| Most Powerful | 4AM (Sat 19th Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down.
First up, the good news: we’ve got a solid window coming up. The next few days are mostly quiet, but things start to fire from Thursday the 19th and into the following week. The standout period is definitely Monday the 21st, with a serious pulse of swell and clean conditions.
Right now, Sunday the 13th is pretty average – small 3ft NW swell and a bit of cross-shore wind. Nothing to get excited about. Monday the 14th looks a bit better with clean conditions in the morning – glassy, 3ft NW swell, and a decent 11-second period. That’s worth a look if you’re keen, but the energy is moderate (306). Tuesday the 15th through Thursday the 18th is a write-off – tiny swell, messy winds, and generally poor surf.
Now, here’s where it gets interesting. Friday the 18th afternoon shows a jump in size – 3ft NW swell but with a long 18-second period and moderate energy (610). The wind is cross-shore and fresh, so it’s not perfect, but the potential is there. Saturday the 19th sees bigger swell: 6ft NW in the morning, with strong energy (1192), but the wind is still cross-shore. This is getting into expert territory at over 5ft. Sunday the 20th is messy again, but Monday the 21st is the real deal.
Reef is your pick for Monday the 21st. Both morning and afternoon are pumping with 8ft NW swell, a 14-second period, and very strong energy (2157). That’s a solid groundswell. The wind is cross-shore, and the conditions are described as wind and tide favorable, though the swell is predicted to be too big for this break. That means it’s strictly for experienced surfers only – over 8ft is expert territory. The direction is NW, which matches the optimum swell direction (SW) reasonably well. Crowds are often here, so expect company. The water temperature is about average for this time of year.
After Monday the 21st, the swell drops off fast. Tuesday the 22nd is flat, and the rest of the week is mostly tiny or poor. There’s a chance of a clean, glassy morning on Thursday the 24th, but only 0.3ft swell – not worth paddling out for. Friday the 25th morning is glassy but again tiny. The outlook stays quiet through to the end of the period.
So, the best on offer: Monday the 21st at Reef – big, powerful NW swell, long period, and favorable conditions. Not for beginners, but if you’ve got the skill, it’s the clear highlight. Second best is Monday the 14th morning – smaller, but clean and glassy.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 19°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the N by Tue afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Thu morning, min 17°C on Tue night). Mainly strong winds. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 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) | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | WNW 8 | WNW 8 | NW 9 | S 13 | S 13 | SW 13 | SW 12 | S 18 | S 16 | SW 16 | NW 19 | NW 18 | NW 15 | NW 14 | NW 13 | NW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 290 | 465 | 486 | 242 | 169 | 40 | 22 | 39 | 3 | 3 | 6 | 6 | 6 | 5 | 10 | 59 | 600 | 1466 | 1184 | 1042 | 878 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-off | glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 4:36AM2.94m | 4:51PM3.04m | 5:10AM2.86m | 5:26PM2.85m | 5:44AM2.73m | 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 | |||||||
Low Tide | 10:38AM0.08m | 11:00PM0.11m | 11:13AM0.19m | 11:32PM0.29m | 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 | |||||||
 | |  | | | | | |  |  | | | | | | | | | | | | |
 | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — |
 | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 26 | 25 | 26 | 25 | 21 | 20 | 20 | 18 | 18 | 19 | 19 | 21 | 20 | 18 | 21 | 20 | 18 | 21 | 21 | 18 |
Feels °C | 26 | 24 | 23 | 25 | 24 | 21 | 20 | 18 | 14 | 12 | 12 | 13 | 16 | 15 | 12 | 17 | 16 | 15 | 19 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NW 9 | S 13 | S 13 | SW 13 | SW 12 | NNW 10 | S 12 | SW 16 | NNW 9 | NW 18 | NW 15 | NW 14 | NW 13 | NW 13 |
| kJ | 290 | 465 | 486 | 242 | 169 | 102 | 63 | 39 | 3 | 3 | 6 | 6 | 1356 | 3 | 10 | 1074 | 600 | 1466 | 1184 | 1042 | 878 |
Swell 2 Height (m) Direction Period (s) | NNW 7 | NNW 7 | S 11 | WNW 9 | NW 9 | WNW 8 | WNW 8 | NW 11 | — | — | — | S 12 | S 12 | S 16 | S 11 | NW 19 | SW 14 | NNW 8 | NNW 8 | SW 13 | NNW 7 |
| kJ | 61 | 37 | 2 | 64 | 83 | 40 | 22 | 32 | — | — | — | 3 | 3 | 5 | 2 | 59 | 8 | 422 | 390 | 7 | 108 |
Swell 3 Height (m) Direction Period (s) | W 9 | S 12 | — | NNW 7 | S 11 | S 11 | WNW 12 | WNW 8 | — | — | — | — | S 18 | — | — | SW 15 | S 11 | SW 14 | SW 14 | SW 13 | SW 13 |
| kJ | 40 | 3 | — | 17 | 2 | 2 | 14 | 22 | — | — | — | — | 6 | — | — | 9 | 2 | 8 | 8 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 5 | NNW 5 | NNW 4 | NNW 8 | NNW 9 | NNW 9 | NNW 10 | — | NNW 10 | NNW 9 | — | NNW 9 | — | — | NNW 8 | — |
| kJ | — | — | — | — | — | 10 | 8 | 24 | 575 | 1406 | 1380 | 1722 | — | 1242 | 1304 | — | 616 | — | — | 251 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 189 | 0 | 0 | 32 | 32 | 32 | 669 | 144 | 585 | 565 | 130 | 32 | 223 | 124 | 32 | 222 | 32 | 32 | 32 | 32 |
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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