
Surf Forecasts:
Castelejo surf forecast from 4 Sep 2026:
- Best quality surf: Friday 4 Sep, 4PM (local time) - 2ft (0.6m), 8s period, WNW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 7PM (local time) - 7ft (2.1m), 10s period, NW swell with 784 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 4PM (local time) - 2ft (0.6m), 8s period with WNW 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 Friday (Sep 04) at 4PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 2.1m 10s and forecast to arrive on Tuesday (Sep 08) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Friday (Sep 04) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Best Surf | 4PM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Most Powerful | 7PM (Tue 8th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ve got to be straight with you – the next two weeks at Castelejo are a real mixed bag, and honestly, mostly a struggle. The water's sitting at 19°, which is a massive 3° colder than normal for this time of year, so you’ll want a thick suit. There’s a lot of onshore wind and messy swell on the cards, but there are a couple of windows that might just save the trip.
The first real chance to get wet doesn’t come until Thursday the 3rd of September. Thursday morning has a clean 3ft NW swell (110 energy), with a gentle cross-offshore breeze from the ENE. It’s surfable, but nothing to write home about. Thursday afternoon drops to 2ft NW (68 energy) but stays clean with a light offshore from the SSE. Decent for a small-wave session.
Friday the 4th is a write-off with cross-on winds and poor conditions. Saturday the 5th isn’t much better, though the morning has a light cross-shore and the afternoon sees a clean 2ft NW (102 energy) with a cross-off breeze – still only ordinary.
Sunday the 6th through to Wednesday the 10th is a rough stretch. The swell picks up, hitting 4ft on Sunday morning (456 energy) and building to 7ft by Tuesday the 8th (738 energy), but the wind is relentless cross-on from the NNW, gusting over 18 mph. The surf is poor, lumpy, and choppy. For a beach and reef setup like Castelejo, this is more interesting for kite surfing than paddle surfing.
Things settle a little on Thursday the 11th of September. The morning is glassy with a 3ft NW swell (150 energy). That’s a rare clean window, but the swell is weak and short-period (6 seconds). It’s surfable, but very ordinary.
Now, here’s where it gets interesting. The standout of the whole forecast is Monday the 14th of September. The morning session looks the goods: a 4ft NW groundswell (396 energy) with a 12-second period, and a light cross-offshore breeze from the east. Conditions are clean. That’s your best bet for a proper surf. The swell direction from the NW is spot on for this break. The afternoon is a letdown with onshore wind, so make the most of the morning.
The rest of the second week is a mix of small, weak swells and onshore winds. The 16th of September kicks up to 5ft NW (379 energy), but the wind is cross-on and choppy. The 17th and 18th follow the same pattern of poor conditions.
So, the bottom line: the first real chance is a tiny window on the 11th, but the clear winner is Monday morning the 14th of September. Get in early that day, because the wind turns on you. The rest of the time, it’s a battle.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Fri night, min 23°C on Sun afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sun night, min 19°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 8 | WNW 8 | WNW 8 | NW 9 | NW 9 | NW 14 | NW 12 | NW 12 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | WNW 11 | NW 10 | NW 7 | NNW 7 | NW 8 | NNW 6 | NNW 10 | NNW 10 | NW 6 |
Wave Graph | |||||||||||||||||||||
47 | 45 | 45 | 132 | 81 | 208 | 330 | 303 | 234 | 440 | 469 | 340 | 281 | 225 | 452 | 165 | 289 | 229 | 130 | 122 | 68 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | on | cross-on | glassy | cross-on | cross | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:54AM2.29m | 8:37PM2.14m | 9:19AM2.20m | 10:17PM2.07m | 10:55AM2.27m | 11:47PM2.19m | 12:12PM2.48m | 00:52AM2.39m | 1:10PM2.73m | 1:43AM2.60m | 1:58PM2.95m | 2:26AM2.77m | 2:40PM3.10m | 3:05AM2.88m | |||||||
Low Tide | 2:10PM0.77m | 2:45AM0.88m | 3:48PM0.84m | 4:26AM0.92m | 5:29PM0.73m | 5:54AM0.77m | 6:41PM0.50m | 6:56AM0.56m | 7:34PM0.26m | 7:44AM0.34m | 8:18PM0.07m | 8:26AM0.17m | 8:57PM-0.04m | ||||||||
7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | |
— | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 27 | 31 | 30 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 22 | 21 | 22 |
Feels °C | 28 | 25 | 29 | 28 | 27 | 24 | 26 | 22 | 22 | 20 | 21 | 17 | 15 | 16 | 16 | 19 | 17 | 16 | 20 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | NW 9 | NW 9 | NW 9 | NW 12 | NW 12 | NW 11 | WNW 13 | WNW 12 | WNW 11 | WNW 11 | NW 10 | — | NW 8 | N 14 | NNW 11 | NNW 10 | NNW 10 | NNW 9 |
47 | 45 | 45 | 132 | 81 | 118 | 330 | 303 | 166 | 440 | 469 | 340 | 281 | 225 | — | 69 | 4 | 51 | 130 | 122 | 55 | |
Swell 2 Height (m) Direction Period (s) | NNW 6 | SE 6 | NW 10 | SE 4 | NNW 5 | NW 14 | NW 9 | WNW 8 | WNW 15 | NNW 10 | NNW 10 | — | — | — | — | — | — | — | W 7 | NW 5 | NNW 12 |
14 | 12 | 25 | 1 | 9 | 208 | 77 | 62 | 234 | 64 | 37 | — | — | — | — | — | — | — | 28 | 25 | 53 | |
Swell 3 Height (m) Direction Period (s) | SE 6 | NW 8 | ESE 5 | SW 12 | NW 16 | SE 6 | NW 5 | ESE 6 | WNW 9 | WNW 9 | ESE 5 | — | — | — | — | — | — | — | N 15 | WNW 7 | W 7 |
5 | 3 | 2 | 6 | 10 | 5 | 11 | 3 | 34 | 16 | 2 | — | — | — | — | — | — | — | 4 | 18 | 9 | |
Wind waves Height (m) Direction Period (s) | — | NW 4 | NNW 5 | — | — | — | — | NNW 5 | NW 6 | NNW 6 | NW 6 | NNW 7 | NNW 7 | NW 7 | NW 7 | NNW 7 | NW 8 | NNW 6 | NNW 5 | E 3 | NW 6 |
— | 6 | 15 | — | — | — | — | 14 | 162 | 141 | 120 | 254 | 165 | 183 | 452 | 165 | 289 | 229 | 37 | 1 | 68 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 0 | 46 | 9 | 0 | 9 | 9 | 9 | 12 | 16 | 245 | 20 | 20 | 270 | 342 | 342 | 638 | 65 | 9 | 735 | 377 |
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.










