Surf Forecasts:
Castelejo surf forecast from 6 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 10PM (local time) - 4ft (1.2m), 9s period, WNW swell with 227 kJ wave energy.
Best Forecast Surf Conditions for Castelejo this week:
The most powerful waves expected at Castelejo in the next 16 days are 1.2m 9s and forecast to arrive on Wednesday (Aug 12) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 13s period and expected on Thursday (Aug 06) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 12th Aug) | 4ft (1.2m) 9s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, let’s run through this in feet and miles per hour, same deal.
So, Castelejo is looking pretty bleak for the most part. From now all the way through the 18th of August, it’s just bad. The wind is onshore or cross-onshore from the north and north-northwest, blowing 15 to 22 mph, tearing the ocean up. Swell energy is mostly low to moderate, between 45 and 305, and the wave heights hang under 5 feet. It’s choppy, lumpy, and not worth the drive.
The one day to keep an eye on is August 19th. Wednesday morning, the wind switches off. It goes glassy – just a slight air from the north-northeast at 3 mph. That changes everything. The swell comes in at 6 feet from the northwest, with a 9-second period and solid energy reading of 478. For an exposed beach-and-reef spot that handles NW swell, that’s the cleanest window we’ve got. It’s a consistent spot and the waves will have some push. The water temp is about normal for this time of year.
That morning is your shot. After that, the wind comes back onshore, the swell drops, and it’s back to poor conditions through the end of the forecast.
Other than that morning, there’s nothing else going on here.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat morning, min 18°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat night, min 18°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 9 | NW 8 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NW 5 | NNW 5 | WNW 7 | NW 7 | WNW 7 | NW 5 | NW 5 | NNW 5 | NNW 5 | WNW 10 | NNW 5 | WNW 9 | WNW 10 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 190 | 206 | 213 | 80 | 74 | 150 | 30 | 30 | 35 | 27 | 55 | 57 | 37 | 35 | 48 | 23 | 21 | 66 | 119 | 163 | 211 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 8:19AM2.28m | 8:50PM2.25m | 9:34AM2.22m | 10:16PM2.18m | 10:59AM2.28m | 11:43PM2.25m | 12:16PM2.45m | 00:55AM2.41m | 1:18PM2.69m | 1:53AM2.59m | 2:11PM2.93m | 2:42AM2.75m | 2:58PM3.11m | 3:26AM2.85m | |||||||
Low Tide | 2:26PM0.75m | 3:05AM0.76m | 3:50PM0.81m | 4:30AM0.81m | 5:22PM0.73m | 5:54AM0.72m | 6:40PM0.53m | 7:01AM0.54m | 7:41PM0.30m | 7:55AM0.35m | 8:32PM0.09m | 8:42AM0.18m | 9:17PM-0.05m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:35 | — | — | 8:34 | — | — | 8:32 | — | — | 8:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 22 | 22 | 21 | 23 | 23 | 21 | 21 | 21 | 20 | 21 | 21 | 19 | 21 | 21 | 19 | 23 | 22 | 20 |
Feels °C | 17 | 17 | 15 | 18 | 18 | 18 | 20 | 20 | 19 | 19 | 18 | 17 | 19 | 18 | 16 | 19 | 18 | 15 | 20 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 7 | NW 11 | WNW 7 | NNW 9 | NNW 9 | W 6 | WNW 6 | WNW 10 | WNW 10 | WNW 9 | WNW 10 | WNW 9 |
| kJ | 33 | 32 | 31 | 28 | 28 | 26 | 26 | 15 | 35 | 27 | 30 | 57 | 34 | 31 | 26 | 12 | 19 | 59 | 119 | 163 | 211 |
Swell 2 Height (m) Direction Period (s) | WNW 7 | W 7 | — | NNW 8 | — | — | NNW 8 | — | N 8 | NNW 12 | — | NNW 10 | W 12 | W 11 | WNW 11 | NNW 7 | WNW 6 | NNW 11 | NW 10 | NNW 9 | NNW 9 |
| kJ | 9 | 4 | — | 23 | — | — | 13 | — | 4 | 13 | — | 38 | 3 | 2 | 11 | 5 | 6 | 12 | 25 | 17 | 17 |
Swell 3 Height (m) Direction Period (s) | S 12 | — | — | — | — | — | — | — | N 11 | — | — | — | — | — | NW 14 | WNW 10 | NNW 12 | — | NW 8 | — | — |
| kJ | 3 | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 7 | 10 | 15 | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | NNW 9 | NW 8 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NW 5 | NNW 5 | NNW 4 | NW 7 | NNW 5 | NW 5 | NW 5 | NNW 5 | NNW 5 | NW 4 | NNW 5 | NW 5 | NW 4 | NNW 5 |
| kJ | 190 | 206 | 213 | 80 | 74 | 150 | 30 | 30 | 27 | 11 | 55 | 23 | 37 | 35 | 48 | 23 | 21 | 66 | 23 | 16 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 65 | 658 | 257 | 73 | 690 | 65 | 179 | 613 | 179 | 95 | 279 | 181 | 181 | 229 | 92 | 76 | 609 | 77 | 16 | 245 | 20 |
Best forecast wave conditions in The Algarve | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castelejo 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 Castelejo Surf forecast
The above surf forecast table for Castelejo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castelejo can be found by selecting the local surf guide option on the grey menu. Our Castelejo 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 (Castelejo) 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 Castelejo 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.
Castelejo is 25 km (16 miles) from Lagos. If you plan a holiday in The Algarve, look for hotels and other accommodation in Lagos. Lagos has rooms for a wide range of budgets as well as car hire and transport links.
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