Surf Forecasts:
Castelejo surf forecast from 7 Sep 2026:
- Best quality surf: Sunday 13 Sep, 1PM (local time) - 4.5ft (1.3m), 14s period, NW swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 1PM (local time) - 4.5ft (1.3m), 14s period, NW swell with 586 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 3.5ft (1.0m), 10s 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 Sunday (Sep 13) at 10AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 1.3m 14s and forecast to arrive on Sunday (Sep 13) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Monday (Sep 14) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 13th Sep) | 3.5ft (1.0m) 10s |
| Best Surf | 1PM (Sun 13th Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 1PM (Sun 13th Sep) | 4.5ft (1.3m) 14s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer for Castelejo over the next couple of weeks.
It’s a rough start. The first week is pretty much a write-off for decent paddle surfing. From Monday the 7th right through to Saturday the 12th of September, the wind is relentless, blowing cross-on or onshore, and the surf is either too small or just messy and choppy. There’s a bit of size on the 10th, with swell hitting 6ft, but the wind is ruining it. The combined swell energy is moderate, hitting 457 or so, but it’s just not worth it. You’d be fighting a losing battle.
Then, things get interesting. Sunday the 13th of September is a real standout. The morning brings a clean, glassy session with light winds from the ESE. The swell is only 3ft, but it’s a long-period groundswell from the NW at 14 seconds, which will give it some real shape and push. The combined energy is moderate at 367. This is your best chance for a clean, fun surf on a longboard or a performance board. The water is a chilly 67°F, which is much colder than usual for this time of year, so don’t forget the booties. This is a very consistent spot, but crowds can be an issue, so get in early.
Monday the 14th of September also looks good in the morning. Another glassy day with the wind from the east, and the swell is a touch bigger at 4ft, with a 12-second period. The energy is up to 520, which is solid. The forecast says "expect very good surf conditions," and that’s the truth. The wind is the key here – with that glassy surface, the waves will be peeling nicely along the beach and reef.
After that, the wind turns nasty again from Tuesday the 15th onwards. There’s a big surge of swell on the 16th and 17th, with waves hitting 8ft and even 12ft, and the combined energy skyrockets to 2095 and 3447. That’s powerful, heavy surf. But the wind is cross-on or onshore, making it a messy, dangerous beast. This is only for experts, and even then, the wind is going to be a problem. For the rest of the window, it’s back to onshore winds and poor conditions.
So, to sum it up: your one true standout is the glassy morning of Sunday the 13th of September for clean, playful waves. The next best is the glassy morning of Monday the 14th. After that, it’s a long wait for good conditions again.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 17°C on Wed night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 19°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu night, light winds from the E by Sun morning). | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 12 | WNW 11 | WNW 11 | WNW 10 | NW 9 | NW 8 | NW 8 | NNW 8 | NW 8 | NW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NW 6 | NW 7 | NW 16 | NW 10 | NW 13 | NW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 624 | 401 | 275 | 204 | 118 | 68 | 266 | 452 | 362 | 362 | 382 | 202 | 76 | 103 | 75 | 91 | 81 | 200 | 335 | 520 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-off | cross | cross-on |
High Tide | 00:52AM2.39m | 1:10PM2.73m | 1:43AM2.60m | 1:58PM2.95m | 2:26AM2.77m | 2:40PM3.10m | 3:05AM2.88m | 3:19PM3.15m | 3:42AM2.92m | 3:56PM3.11m | 4:17AM2.90m | 4:32PM2.99m | ||||||||
Low Tide | 6:41PM0.50m | 6:56AM0.56m | 7:34PM0.26m | 7:44AM0.34m | 8:18PM0.07m | 8:26AM0.17m | 8:57PM-0.04m | 9:05AM0.07m | 9:33PM-0.07m | 9:42AM0.04m | 10:07PM-0.01m | 10:17AM0.08m | 10:39PM0.11m | |||||||
 |  | | |  | | | | | | | | | | | | | | | | |
 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — |
 | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 22 | 21 | 21 | 20 | 19 | 19 | 18 | 21 | 21 | 20 | 21 | 21 | 23 | 25 | 24 | 25 | 25 | 24 | 24 |
Feels °C | 21 | 19 | 17 | 17 | 18 | 16 | 14 | 12 | 18 | 17 | 14 | 19 | 20 | 22 | 23 | 23 | 23 | 25 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 11 | WNW 11 | WNW 10 | NW 9 | NW 8 | NW 14 | NW 11 | NW 8 | NNW 11 | NNW 10 | NNW 7 | NNW 7 | NNW 6 | NW 6 | NW 7 | NNW 7 | NW 10 | NW 13 | NW 12 |
| kJ | 624 | 401 | 275 | 204 | 118 | 68 | 7 | 20 | 362 | 12 | 60 | 202 | 76 | 103 | 75 | 91 | 81 | 200 | 335 | 520 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | NNW 9 | NNW 9 | — | — | — | — | — | NW 10 | — | — | NNW 10 | NNW 9 | NNW 9 | WNW 10 | WNW 10 | WNW 9 | NW 14 | NNW 8 | SE 6 |
| kJ | 9 | 8 | 8 | — | — | — | — | — | 25 | — | — | 38 | 46 | 17 | 20 | 31 | 45 | 198 | 90 | 10 |
Swell 3 Height (m) Direction Period (s) | ESE 5 | — | — | — | — | — | — | — | NNW 12 | — | — | W 7 | W 7 | W 7 | N 8 | SE 5 | NW 16 | WNW 9 | WNW 9 | — |
| kJ | 2 | — | — | — | — | — | — | — | 15 | — | — | 1 | 1 | 4 | 6 | 1 | 66 | 26 | 32 | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 6 | NW 4 | NW 8 | NNW 8 | — | NW 8 | NNW 7 | — | — | — | — | — | — | — | — | — |
| kJ | 116 | 155 | 57 | 51 | 84 | 20 | 266 | 452 | — | 362 | 382 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 20 | 20 | 20 | 260 | 65 | 390 | 465 | 65 | 46 | 653 | 65 | 9 | 9 | 9 | 9 | 458 | 9 | 0 | 180 | 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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