
Surf Forecasts:
Reef surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 1AM (local time) - 4.5ft (1.4m), 12s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 1AM (local time) - 5ft (1.5m), 14s period, NW swell with 902 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 4AM (local time) - 1.5ft (0.5m), 15s 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 4AM. The primary swell is predicted to be 0.5m and 15s period with a secondary swell of 0.5m and 9s. 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 1.5m 14s and forecast to arrive on Saturday (Sep 19) at 1AM. 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 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 13th Sep) | 1.5ft (0.5m) 15s |
| Best Surf | 1AM (Mon 14th Sep) | 4.5ft (1.4m) 12s |
| Most Powerful | 1AM (Sat 19th Sep) | 5ft (1.5m) 14s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, let’s get into it.
The first few days are looking pretty grim, to be honest. There’s barely a ripple out there for Saturday and Sunday, with the swell energy weak and the waves messy. We’ve got a couple of small swells, but nothing that’s worth paddling out for. You’d be fighting a losing battle against the chop for next to nothing.
Now, Monday the 14th, things start to look a little more interesting. We’ve got a clean 3ft of west-northwest swell rolling in with a solid 11-second period. The wind is dead glassy in the morning, so the surface is going to be clean as a whistle. It’s not huge, but it’s a start. The energy is still moderate, sitting at 288, but it’s the first real sign of life.
Tuesday the 15th is a write-off. The wind is going to be howling from the north, and the swell period drops right off. Not worth a second look.
We have a bit of a lull for a few days after that. The wind stays onshore and the swell is tiny. It’s a proper blank run from the 16th through to the 20th. You can forget about it.
But hold on. The real story here is next Monday, the 21st of September. That’s the standout. The forecast is showing a significant pulse of northwest swell pushing through, around 5ft with a long 16-second period. This is proper groundswell, and the energy reading is strong, at 957. That’s the kind of number that gets the heart rate up. The conditions are looking glassy in the morning with a slight air, which is about as good as it gets. This is a reef break that will light up with this kind of west-northwest energy. It won’t be one for the beginners, as it’ll be a proper step up, but for the advanced crew, this is the session to circle on the calendar. There will be some good sets rolling through.
The afternoon of the 21st will see the swell build a touch more, but the wind will swing onshore and make things a little trickier.
After that, we go quiet again for a couple of days mid-week.
Then, from Thursday the 24th of September, we’ve got some more fun waves on the way. The swell pulses again from the northwest, around 3ft with a long 15-second period. The morning of the 24th looks glassy again, which is a major plus. The energy is moderate, around 368, and it should be a much more relaxed session than the Monday-peak. This is good for a wider range of abilities. The wind stays light through the end of the week, which is promising.
The last couple of days of the period are looking a bit wind-affected, so I’d get your paddling done when the wind is light.
So, to sum it up: get through this rough patch, and you’ve got the big Monday the 21st as the clear standout, with the 24th being a solid back-up option for cleaner, albeit smaller, waves.
Rusty out.
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 19°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Mon night, min 17°C on Tue night). Winds increasing (light winds from the N on Mon night, strong winds from the N by Tue night). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 9 | NW 15 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | WNW 8 | WNW 8 | NNW 5 | WNW 10 | NNW 9 | NNW 9 | NW 12 | SW 18 | NW 11 | SW 16 | SW 15 | NW 14 | NW 14 |
Wave Graph | |||||||||||||||||||||
61 | 68 | 80 | 290 | 520 | 542 | 242 | 169 | 41 | 22 | 63 | 72 | 0 | 0 | 403 | 12 | 268 | 10 | 9 | 167 | 902 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | on | cross-off | glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 4:01AM2.96m | 4:15PM3.17m | 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 | |||||||
Low Tide | 10:02AM0.03m | 10:27PM-0.02m | 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 | |||||||
7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 28 | 26 | 26 | 27 | 25 | 22 | 21 | 20 | 18 | 19 | 20 | 19 | 22 | 21 | 18 | 23 | 22 | 19 |
Feels °C | 24 | 24 | 23 | 26 | 24 | 24 | 25 | 24 | 21 | 20 | 16 | 13 | 13 | 14 | 13 | 16 | 16 | 13 | 18 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NW 11 | WNW 10 | — | — | NW 12 | NNW 10 | NW 11 | NNW 10 | NNW 9 | NNW 9 | NNW 9 |
115 | 111 | 97 | 290 | 520 | 542 | 242 | 169 | 102 | 63 | 33 | 72 | — | — | 403 | 1662 | 268 | 732 | 718 | 525 | 396 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 9 | WNW 9 | NNW 7 | NNW 7 | S 11 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | S 13 | — | — | S 12 | SW 18 | S 12 | SW 16 | NNW 16 | NW 14 | NW 14 |
61 | 68 | 64 | 48 | 43 | 2 | 46 | 46 | 41 | 22 | 22 | 3 | — | — | 3 | 12 | 3 | 10 | 25 | 167 | 902 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 12 | NW 15 | W 9 | S 12 | S 11 | NNW 6 | S 11 | S 11 | WNW 12 | S 10 | — | — | — | — | — | S 16 | S 11 | SW 15 | SW 14 | SW 14 |
7 | 6 | 80 | 40 | 3 | 2 | 23 | 2 | 2 | 15 | 2 | — | — | — | — | — | 5 | 2 | 9 | 8 | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 6 | NNW 4 | NNW 4 | NNW 5 | NNW 7 | NNW 9 | NNW 9 | NNW 10 | — | NNW 10 | — | — | — | — |
— | — | — | — | — | — | — | 12 | 8 | 10 | 63 | 531 | 1680 | 1755 | 1780 | — | 869 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 32 | 14 | 1 | 43 | 0 | 0 | 32 | 32 | 32 | 984 | 420 | 585 | 293 | 124 | 34 | 223 | 34 | 34 | 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.










