Surf Forecasts:
Cave surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 4AM (local time) - 7ft (2.1m), 12s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 4AM (local time) - 7ft (2.1m), 12s period, WNW swell with 1,268 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 1AM (local time) - 6ft (1.8m), 13s period with WNW swell.
Best Forecast Surf Conditions for Cave this week:
The surf forecast for Cave over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 1AM. The primary swell is predicted to be 1.8m and 13s period with a secondary swell of 0.9m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cave in the next 16 days are 2.1m 12s and forecast to arrive on Sunday (Aug 23) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 23) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 23rd Aug) | 6ft (1.8m) 13s |
| Best Surf | 4AM (Sun 23rd Aug) | 7ft (2.1m) 12s |
| Most Powerful | 4AM (Sun 23rd Aug) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Cave over the next 16 days.
Short Range ForecastHeavy rain (total 29mm), heaviest during Sun afternoon. Warm (max 22°C on Sun morning, min 18°C on Fri night). Winds increasing (light winds from the W on Sat morning, strong winds from the S by Sun morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon morning. Warm (max 22°C on Mon morning, min 19°C on Wed night). Winds decreasing (strong winds from the SSW on Mon morning, calm by Mon night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | WNW 13 | W 11 | W 10 | W 9 | SW 8 | SW 8 | WSW 7 | W 6 | W 6 | NW 6 | W 7 | W 7 | WNW 8 | WNW 8 | NW 9 | NW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 286 | 794 | 537 | 446 | 287 | 1127 | 924 | 450 | 306 | 613 | 672 | 233 | 94 | 76 | 31 | 117 | 142 | 212 | 513 | 628 | 550 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-off | cross-off | cross | cross | cross-on | on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross |
High Tide | 10:42PM1.88m | 11:22AM2.03m | 00:11AM1.94m | 12:36PM2.16m | 1:11AM2.08m | 1:28PM2.34m | 1:54AM2.25m | 2:08PM2.54m | 2:30AM2.42m | 2:43PM2.72m | 3:03AM2.57m | 3:15PM2.87m | 3:34AM2.69m | ||||||||
Low Tide | 4:18PM1.11m | 4:48AM1.16m | 5:56PM1.07m | 6:14AM1.07m | 7:03PM0.92m | 7:12AM0.91m | 7:48PM0.74m | 7:53AM0.72m | 8:24PM0.55m | 8:28AM0.54m | 8:57PM0.38m | 9:01AM0.39m | 9:28PM0.24m | ||||||||
 | |  | | | |  |  |  |  | |  | |  |  | | | | | | | |
 | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | 1 | 24 | 4 | 2 | 1 | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 19 | 20 | 18 | 20 | 20 | 19 | 22 | 21 | 21 | 22 | 21 | 20 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 19 |
Feels °C | 15 | 15 | 15 | 19 | 19 | 19 | 17 | 19 | 20 | 18 | 18 | 20 | 22 | 20 | 21 | 19 | 19 | 17 | 18 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | NNW 11 | SSW 15 | WNW 9 | NNW 10 | NNW 9 | WNW 13 | W 11 | W 10 | W 9 | NNW 8 | NNW 8 | WSW 7 | W 6 | W 6 | NW 6 | W 7 | W 7 | WNW 8 | WNW 8 | NW 9 | NW 9 |
| kJ | 286 | 21 | 42 | 446 | 287 | 1127 | 924 | 450 | 306 | 11 | 12 | 233 | 94 | 76 | 31 | 117 | 142 | 212 | 513 | 628 | 550 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | W 11 | NNW 12 | W 9 | W 9 | NNW 9 | N 8 | N 8 | NNW 8 | SW 13 | — | NNW 7 | SSW 6 | W 10 | W 6 | NW 6 | NW 9 | SW 11 | SW 11 | SW 11 | SW 11 |
| kJ | 22 | 2 | 29 | 38 | 39 | 140 | 66 | 46 | 20 | 7 | — | 18 | 10 | 2 | 18 | 2 | 13 | 5 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | — | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | — | — | SW 12 | N 7 | SW 12 | W 10 | SW 12 | NW 14 | SW 11 | — | — | — |
| kJ | 21 | — | 18 | 20 | 20 | 20 | 18 | 17 | 7 | — | — | 6 | 4 | 6 | 2 | 5 | 8 | 5 | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 7 | NNW 10 | NNW 10 | — | — | — | — | SSW 6 | SSW 6 | SW 8 | SW 8 | — | — | — | SSW 5 | — | — | — | — | — | — |
| kJ | 229 | 794 | 537 | — | — | — | — | 132 | 127 | 613 | 672 | — | — | — | 5 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 668 | 33 | 33 | 42 | 0 | 143 | 42 | 42 | 406 | 415 | 35 | 0 | 143 | 142 | 33 | 404 | 220 | 36 | 224 | 33 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Cave 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 Cave Surf forecast
The above surf forecast table for Cave provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cave can be found by selecting the local surf guide option on the grey menu. Our Cave 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 (Cave) 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 Cave 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 Cave, camping, hotels and holiday cottages in Ericeira, consider staying in Torres Vedras which is 18 km (11 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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