Surf Forecasts:
Castelejo surf forecast from 28 Aug 2026:
- Best quality surf: Thursday 3 Sep, 10AM (local time) - 4ft (1.2m), 7s period, NW swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 7.5ft (2.3m), 11s period, WNW swell with 1,236 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 10AM (local time) - 4ft (1.2m), 7s period with NW swell.
Best Forecast Surf Conditions for Castelejo this week:
The surf forecast for Castelejo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 03) at 10AM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 0.1m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 2.3m 11s and forecast to arrive on Friday (Aug 28) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Thursday (Sep 03) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 3rd Sep) | 4ft (1.2m) 7s |
| Best Surf | 10AM (Thu 3rd Sep) | 4ft (1.2m) 7s |
| Most Powerful | 1PM (Fri 28th Aug) | 7.5ft (2.3m) 11s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright folks, Rusty here, looking at the forecast for Castelejo. It’s a bit of a mixed bag over the next couple of weeks, with some proper waiting involved. The good news is that there’s a solid run of clean surf coming our way after a rough first week.
Right now, things are blown out. We’ve got a 7ft swell (959 combined energy) from the WNW on Friday morning, but that 15 km/h cross-onshore wind from the north is wrecking it. The afternoon is even worse with a strong 30 km/h onshore. Saturday and Sunday are much the same – poor conditions, choppy and messy with moderate to fresh cross-onshore and onshore winds. Monday through to the following Wednesday (the 2nd of September) stay ugly. Stronger winds, messy surf. Don’t bother.
There’s a gap of poor surf until things finally start to settle. On Thursday the 3rd, we get a break in the wind. It’s not big, only 4ft from the NW (168 combined energy), but with a gentle offshore breeze from the ESE in the morning, it’s clean. The afternoon turns glassy. It’s small, but it’s the first sign of hope.
Then comes the standout. Saturday the 5th of September is where the window really opens. For that Saturday, Saturday afternoon, and right through Sunday the 6th, the conditions are looking prime. Swell sits around 4ft to 4ft from the NW with a long period of 12 to 13 seconds (513 combined energy on Sunday morning). That’s proper groundswell energy, meaning better shaped waves. Best of all, the wind is light and clean – cross-off from the ESE on Saturday going glassy on Sunday morning. You can expect clean, lined-up surf.
Monday the 7th is still good in the morning, with a glassy 3ft NW swell (220 combined energy) – worth a paddle. The models show the water temperature is about average for the time of year, so no surprises there.
The second week looks much quieter. From Tuesday the 8th onward, wind swings back to cross-onshore or onshore, and the swell drops away to barely a ripple. Heights are down around 1ft to 3ft with low to moderate energy and chop. Not worth the drive for a paddle board, but the stronger winds and choppy conditions might make it interesting for the kite crew.
In short: hang in there through this week. Saturday the 5th and Sunday the 6th of September are the best on offer – clean, with solid chest-to-head-high long-period NW swell and light offshore/glassy winds. Don’t sleep on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 18°C on Fri night). Winds increasing (light winds from the WNW on Thu night, fresh winds from the N by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Mon morning, min 18°C on Mon night). Mainly strong winds. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 11 | NW 10 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 9 | NW 9 | NNW 7 | NW 8 | NW 8 | NNW 8 | NW 7 | NW 8 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 959 | 1123 | 973 | 585 | 406 | 154 | 93 | 187 | 200 | 135 | 152 | 251 | 217 | 481 | 417 | 413 | 322 | 306 | 160 | 129 | 68 |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | off | glassy | cross |
High Tide | 3:27PM2.93m | 3:46AM2.74m | 3:58PM2.98m | 4:18AM2.78m | 4:31PM2.97m | 4:51AM2.77m | 5:05PM2.89m | 5:26AM2.71m | 5:43PM2.75m | 6:06AM2.60m | 6:27PM2.56m | 6:53AM2.45m | 7:22PM2.33m | ||||||||
Low Tide | 9:12AM0.25m | 9:38PM0.13m | 9:44AM0.18m | 10:09PM0.09m | 10:16AM0.16m | 10:41PM0.10m | 10:50AM0.19m | 11:14PM0.18m | 11:28AM0.27m | 11:51PM0.31m | 12:10PM0.41m | 00:34AM0.50m | 1:01PM0.59m | 1:28AM0.71m | |||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — |
 | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:02 | — | — | 8:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 21 | 20 | 20 | 22 | 22 | 21 | 22 | 21 | 20 | 20 | 20 | 18 | 20 | 20 | 23 | 25 | 25 | 26 |
Feels °C | 18 | 16 | 17 | 17 | 16 | 17 | 20 | 20 | 17 | 18 | 17 | 14 | 15 | 15 | 12 | 17 | 17 | 20 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 11 | NW 10 | NW 10 | — | NW 8 | NW 8 | W 13 | NW 10 | NW 9 | NW 9 | NW 10 | NW 9 | SW 15 | SW 14 | NW 8 | SW 15 | NNW 8 | NW 7 | NW 8 | NNW 7 |
| kJ | 959 | 1123 | 973 | 585 | — | 154 | 93 | 3 | 200 | 135 | 152 | 251 | 217 | 8 | 8 | 413 | 9 | 306 | 160 | 129 | 68 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WNW 12 | WNW 11 | SW 16 | SW 16 | SW 15 | — | — | SW 15 | — | SW 14 | SW 14 | SE 7 | SE 8 |
| kJ | — | — | — | — | — | — | — | — | 14 | 24 | 10 | 10 | 9 | — | — | 9 | — | 8 | 8 | 52 | 57 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 17 | — | — | SW 15 | — | — | — | — | — | — | SW 14 | NW 8 |
| kJ | — | — | — | — | — | — | — | — | — | 12 | — | — | 9 | — | — | — | — | — | — | 8 | 18 |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | — | — | NW 9 | NNW 6 | NNW 5 | NW 8 | NNW 6 | NW 6 | NW 6 | NNW 6 | NNW 6 | NW 9 | NNW 7 | — | NW 8 | — | SE 3 | ESE 7 | — |
| kJ | — | 4 | — | — | 406 | 107 | 46 | 187 | 141 | 98 | 77 | 175 | 119 | 481 | 417 | — | 322 | — | 3 | 202 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 118 | 65 | 46 | 609 | 178 | 77 | 390 | 65 | 77 | 609 | 65 | 65 | 658 | 390 | 65 | 737 | 46 | 0 | 0 | 9 |
Best forecast wave conditions in The Algarve | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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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