Surf Forecasts:
Reef surf forecast from 31 Aug 2026:
- Best quality surf: Sunday 6 Sep, 4AM (local time) - 4.5ft (1.4m), 12s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 7PM (local time) - 4.5ft (1.4m), 14s period, NW swell with 721 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 4AM (local time) - 4.5ft (1.4m), 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 06) at 4AM. The primary swell is predicted to be 1.4m 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 1.4m 14s and forecast to arrive on Saturday (Sep 05) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 10s period and expected on Tuesday (Sep 01) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 6th Sep) | 4.5ft (1.4m) 12s |
| Best Surf | 4AM (Sun 6th Sep) | 4.5ft (1.4m) 12s |
| Most Powerful | 7PM (Sat 5th Sep) | 4.5ft (1.4m) 14s |
Table - best surf conditions forecast for Reef over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's talk about the next couple of weeks in the water. It's a long, slow burn before we get a proper pulse.
We start off with a real rough patch. From Monday, August 31st, all the way through the first week of September, it's just messy. Cross-shore winds are blowing hard at 30 km/h, and the swell is gutless. The combined energy is mostly in the low hundreds, with a few tiny pulses. The water is a normal 20.3° for this time of year. Honestly, it's a write-off for a solid week.
We get a glimmer of hope on Friday, September 4th, with some cleaner wind, but the swell is a measly 0.6m. Not worth a paddle.
Things start to look up in the second week. Monday, September 7th, has a clean morning with a 0.8m groundswell from the WNW, with a 14-second period. It's a step in the right direction. The real standout is Monday, September 14th. The morning is glassy, but the afternoon is where it's at. A 1.6m swell from the NW with a 17-second period arrives, pumping the combined energy up to 1,634 units. That's a serious, long-period groundswell that will be running beautifully at the Reef.
But the one to really get excited about is Tuesday, September 15th. The forecast is for a clean, offshore breeze and a 2.1m NW swell with a 14-second period. The combined energy is a huge 1,541 units. This is a powerful swell, and with that offshore wind, it will be perfect. But at 2.1m, make no mistake, this is for experts only. The Reef will be handling that size and direction (SW optimum) perfectly, but it's going to be a heavy, demanding session.
Short Range ForecastMostly dry. Warm (max 21°C on Wed morning, min 17°C on Tue night). Winds decreasing (fresh winds from the N on Mon night, light winds from the N by Wed night). | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 33°C on Sat morning, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 9 | NW 10 | SW 16 | SSW 15 | SSW 15 | SSW 14 | NW 8 | NW 8 | SSW 15 | NW 9 | WNW 8 | WNW 8 | NNW 6 | WNW 10 | WNW 9 | NW 16 | NW 15 | WNW 9 | WNW 10 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 183 | 384 | 10 | 23 | 22 | 21 | 55 | 60 | 22 | 21 | 48 | 48 | 44 | 122 | 106 | 132 | 631 | 46 | 51 | 58 | 40 |
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 | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross | glassy | on | cross-off |
High Tide | 5:24PM2.94m | 5:46AM2.76m | 6:02PM2.80m | 6:25AM2.66m | 6:46PM2.61m | 7:12AM2.51m | 7:40PM2.39m | 8:13AM2.35m | 8:55PM2.19m | 9:37AM2.25m | 10:33PM2.12m | 11:12AM2.31m | 00:04AM2.23m | ||||||||
Low Tide | 11:11AM0.19m | 11:35PM0.18m | 11:48AM0.28m | 00:12AM0.31m | 12:31PM0.42m | 00:55AM0.50m | 1:22PM0.60m | 1:49AM0.71m | 2:31PM0.77m | 3:05AM0.89m | 4:07PM0.85m | 4:44AM0.93m | 5:46PM0.74m | ||||||||
 | |  |  | | | | | | | | | | | | | |  | | | | |
 | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 20 | 20 | 18 | 20 | 20 | 18 | 21 | 21 | 18 | 23 | 23 | 20 | 24 | 24 | 23 | 33 | 28 | 28 | 29 | 26 | 27 |
Feels °C | 16 | 16 | 14 | 16 | 16 | 14 | 19 | 18 | 16 | 23 | 22 | 19 | 21 | 21 | 20 | 28 | 24 | 25 | 29 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 10 | SW 16 | SSW 15 | SSW 15 | SSW 14 | NW 8 | NW 8 | NNW 7 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 10 | WNW 9 | NNW 6 | NW 15 | NW 13 | NNW 12 | NNW 11 | NNW 10 |
| kJ | 183 | 384 | 10 | 23 | 22 | 21 | 55 | 60 | 172 | 128 | 48 | 48 | 44 | 122 | 106 | 72 | 631 | 679 | 595 | 372 | 192 |
Swell 2 Height (m) Direction Period (s) | NW 11 | SW 17 | — | — | — | — | SSW 15 | SSW 16 | SSW 15 | NW 9 | SSW 14 | SW 14 | NW 11 | SW 13 | SW 13 | WNW 9 | NNW 7 | NNW 7 | WNW 10 | W 9 | W 9 |
| kJ | 64 | 11 | — | — | — | — | 23 | 24 | 22 | 21 | 20 | 8 | 18 | 7 | 7 | 106 | 77 | 69 | 51 | 58 | 40 |
Swell 3 Height (m) Direction Period (s) | W 11 | S 11 | S 10 | — | — | — | — | — | NW 10 | SSW 14 | — | — | SW 13 | SW 13 | N 12 | NW 16 | WNW 9 | WNW 9 | SW 12 | S 11 | NNW 6 |
| kJ | 9 | 2 | 2 | — | — | — | — | — | 4 | 20 | — | — | 7 | 7 | 3 | 132 | 96 | 46 | 5 | 3 | 6 |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 10 | NW 9 | NNW 9 | NNW 9 | NNW 7 | NNW 7 | — | — | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | — | — | — | — | — | — |
| kJ | 72 | 87 | 772 | 528 | 523 | 486 | 247 | 173 | — | — | 96 | 55 | 43 | 47 | 50 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 234 | 236 | 35 | 236 | 236 | 130 | 32 | 222 | 35 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 188 | 32 | 1 | 188 | 1 |
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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