Surf Forecasts:
Castelejo surf forecast from 6 Sep 2026:
- Best quality surf: Saturday 12 Sep, 7AM (local time) - 3ft (0.9m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 7ft (2.2m), 8s period, NNW swell with 634 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 7AM (local time) - 3ft (0.9m), 7s period with NNW 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 Saturday (Sep 12) at 7AM. The primary swell is predicted to be 0.9m and 7s period. 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 2.2m 8s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 7s period and expected on Saturday (Sep 12) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 12th Sep) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Sat 12th Sep) | 3ft (0.9m) 7s |
| Most Powerful | 1AM (Thu 10th Sep) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
The next week and a half is a bit of a write-off, to be honest. The wind is howling from the north and northwest, smashing the coast with onshore slop. We’ve got a lot of lumpy, choppy, and just plain ugly conditions. The combined swell energy is moderate to strong—hitting 440 and 762 (moderate wave energy) at times—but it’s all useless with the wind. You’ll be looking at a long, frustrating wait until Saturday the 12th of September before things finally start to turn.
The first real glimmer of hope comes on Saturday morning, the 12th. A light offshore breeze from the ESE, 9 mph, will clean things right up at Castelejo. The swell is small, only 3 ft from the NNW, with a short period of 7 seconds, so it won’t have much punch, but it’ll be clean and glassy. The combined energy is weak at 67, but it’s a start. Then Sunday the 13th is where it’s at. The morning has a moderate offshore wind from the ESE at 12 mph, with a similar 3 ft NNW swell, but the energy jumps to 250 (moderate wave energy). The afternoon is even better—a light cross-offshore breeze from the east, 6 mph, and a 2 ft NW swell that’s got a long period of 13 seconds. That’s proper groundswell, and it’ll wrap into the point and reef setup nicely. The water temp is about average for this time of year.
Tuesday the 15th morning is worth a mention too. Glassy conditions with no wind at all, and a 5 ft NW swell with an 8-second period. The combined energy is 453 (moderate wave energy), and it’ll be super clean. That’s likely the best wave size for a relaxed session, though the short period means it might be a bit walled off at the beach. The afternoon turns to chop again, so hit it early.
Later in the week, Wednesday the 16th morning has a gentle offshore from the ESE at 9 mph, delivering 5 ft NW swell (9-second period, 406 energy) and clean conditions. Then Friday the 18th morning is another glassy gem with a 5 ft NW swell (9-second period, 315 energy), perfect for a smooth session before the wind picks up. The only real standout here is the Sunday the 13th afternoon — that long-period NW groundswell with light offshore winds is the best you’ll get, but it’s small. Crowds are sometimes an issue at Castelejo, so you might have some company.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Sun morning, min 20°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 18°C on Tue night). Winds decreasing (strong winds from the NNW on Wed night, light winds from the NW by Fri afternoon). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 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) | NW 12 | NW 12 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | NNW 6 | NNW 5 | NW 8 | NNW 8 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 330 | 303 | 331 | 530 | 624 | 401 | 275 | 204 | 112 | 75 | 306 | 634 | 348 | 330 | 294 | 183 | 179 | 134 | 57 | 57 | 74 |
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 | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | off | on | cross-on |
High Tide | 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 | 3:19PM3.15m | 3:42AM2.92m | 3:56PM3.11m | ||||||||
Low Tide | 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 | 9:05AM0.07m | 9:33PM-0.07m | 9:42AM0.04m | 10:07PM-0.01m | |||||||
 | |  | |  | | | | | | | | | | | | | | | | | |
 | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 25 | 25 | 25 | 26 | 23 | 20 | 20 | 20 | 19 | 19 | 18 | 21 | 21 | 21 | 26 | 25 | 25 | 25 | 25 | 23 |
Feels °C | 26 | 21 | 21 | 21 | 21 | 20 | 17 | 15 | 16 | 14 | 14 | 12 | 18 | 18 | 17 | 23 | 23 | 25 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 12 | WNW 15 | WNW 13 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | NW 9 | NW 8 | N 13 | — | NNW 8 | NW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 8 |
| kJ | 330 | 303 | 331 | 530 | 624 | 401 | 275 | 204 | 97 | 68 | 4 | — | 348 | 330 | 202 | 183 | 179 | 134 | 57 | 57 | 74 |
Swell 2 Height (m) Direction Period (s) | NW 9 | WNW 8 | NW 11 | NW 10 | NNW 10 | NW 9 | NNW 9 | — | — | — | — | — | NW 12 | NNW 12 | NNW 10 | NNW 10 | W 7 | ESE 6 | SE 7 | SE 7 | SE 8 |
| kJ | 110 | 62 | 166 | 98 | 37 | 3 | 8 | — | — | — | — | — | 37 | 27 | 117 | 39 | 4 | 4 | 19 | 31 | 21 |
Swell 3 Height (m) Direction Period (s) | ESE 6 | ESE 6 | WNW 9 | WNW 9 | ESE 5 | — | — | — | — | — | — | — | NW 10 | — | — | W 7 | SE 5 | W 7 | WNW 10 | WNW 10 | NW 11 |
| kJ | 3 | 4 | 32 | 26 | 3 | — | — | — | — | — | — | — | 16 | — | — | 4 | 1 | 4 | 10 | 19 | 31 |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | NW 6 | NW 6 | NW 6 | NNW 7 | NNW 6 | NW 5 | NNW 6 | NNW 5 | NW 8 | NNW 8 | — | — | NNW 8 | — | — | — | — | — | — |
| kJ | — | 14 | 124 | 108 | 78 | 186 | 70 | 67 | 112 | 75 | 306 | 634 | — | — | 294 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 609 | 12 | 16 | 9 | 20 | 20 | 260 | 65 | 85 | 465 | 20 | 46 | 9 | 46 | 9 | 9 | 9 | 0 | 9 | 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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