Surf Forecasts:
Castelejo surf forecast from 31 Aug 2026:
- Best quality surf: Sunday 6 Sep, 1AM (local time) - 3.5ft (1.1m), 14s period, NW swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 4AM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 756 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 10AM (local time) - 3.5ft (1.1m), 9s 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 Saturday (Sep 05) at 10AM. The primary swell is predicted to be 1.1m and 9s 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 2.0m 10s and forecast to arrive on Tuesday (Sep 01) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Saturday (Sep 05) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 5th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 1AM (Sun 6th Sep) | 3.5ft (1.1m) 14s |
| Most Powerful | 4AM (Tue 1st Sep) | 6.5ft (2.0m) 10s |
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 cooking for Castelejo over the next couple of weeks.
Right off the bat, we’ve got a bit of a flat spell to get through. The first few days are a write-off for paddle surfing, with strong cross-onshore winds and lumpy, poor conditions. It’s not until Saturday the 5th of September that things start to turn. We’ll see a light cross-offshore breeze clean up a 4ft NW swell, and the water’s a bit colder than average for this time of year at 68°F.
The real standout is shaping up for Tuesday the 15th of September. That’s a full two weeks out, so keep your expectations in check, but the models are showing some serious potential. We’re looking at a solid 7ft NW groundswell with a very long 14-second period and light offshore winds. The combined energy is massive at 1905, and it’s lining up with the optimum swell direction. This is expert-level stuff, not one for the groms. For the experienced crew, the morning session looks clean and powerful.
Before that, there are a few other windows worth paddling out for. Saturday the 5th of September afternoon has a clean 3ft NW swell with light offshore winds from the SE. The energy is moderate at 281. It’s not huge, but it’ll be fun. Sunday the 6th of September also has some promise, with a 4ft NW groundswell, but that long 12-second period might make it a bit straight at the beach break. The afternoon session should be clean with offshore winds.
For the rest of the week following that, there’s a mix of small swells and onshore winds, nothing that really jumps out. The 15th is the one to circle on the calendar.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 26°C on Wed night, min 17°C on Mon night). Winds decreasing (strong winds from the NNW on Mon night, light winds from the N by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 35°C on Fri afternoon, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 9 | NW 9 | NNW 7 | NW 9 | NW 9 | NNW 8 | NW 8 | NW 8 | NNW 7 | NW 7 | NNW 7 | NNW 6 | NW 7 | NW 8 | NW 7 | NW 9 | NW 9 | NW 14 | NW 12 | NW 12 | NW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 132 | 427 | 355 | 551 | 460 | 452 | 156 | 238 | 178 | 122 | 86 | 66 | 77 | 104 | 100 | 199 | 156 | 410 | 479 | 355 | 229 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-off | off | off | cross-off | off | cross |
High Tide | 5:05PM2.89m | 5:26AM2.71m | 5:43PM2.75m | 6:06AM2.60m | 6:27PM2.56m | 6:53AM2.45m | 7:22PM2.33m | 7:54AM2.29m | 8:37PM2.14m | 9:19AM2.20m | 10:17PM2.07m | 10:55AM2.27m | 11:47PM2.19m | ||||||||
Low Tide | 10:50AM0.19m | 11:14PM0.18m | 11:28AM0.27m | 11:51PM0.31m | 12:10PM0.41m | 00:34AM0.50m | 1:01PM0.59m | 1:28AM0.71m | 2:10PM0.77m | 2:45AM0.88m | 3:48PM0.84m | 4:26AM0.92m | 5:29PM0.73m | ||||||||
 | |  | | | | | | | | | | | |  | |  | | | | | |
 | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 8:06 | — | — | 8:05 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 20 | 20 | 19 | 22 | 22 | 26 | 26 | 29 | 30 | 31 | 35 | 32 | 30 | 30 | 28 | 25 | 27 | 28 |
Feels °C | 15 | 15 | 14 | 15 | 15 | 14 | 20 | 20 | 24 | 24 | 26 | 27 | 26 | 30 | 28 | 29 | 30 | 27 | 25 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 11 | NW 10 | SW 15 | SW 15 | SW 14 | NW 8 | SW 15 | NNW 7 | NW 7 | NNW 7 | NNW 6 | NW 7 | NW 8 | NW 7 | NW 9 | NW 9 | NW 14 | NW 12 | NW 12 | NW 11 |
| kJ | 132 | 33 | 236 | 9 | 8 | 8 | 156 | 9 | 178 | 122 | 86 | 66 | 77 | 104 | 100 | 199 | 156 | 410 | 479 | 355 | 229 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | SW 16 | SW 16 | — | — | — | SW 15 | — | SW 14 | SW 14 | NW 9 | NW 8 | SE 6 | NW 11 | WNW 10 | SE 6 | NW 16 | WNW 9 | WNW 9 | WNW 10 | WNW 9 |
| kJ | 24 | 10 | 10 | — | — | — | 8 | — | 8 | 8 | 20 | 35 | 6 | 18 | 61 | 1 | 125 | 75 | 50 | 54 | 26 |
Swell 3 Height (m) Direction Period (s) | SW 17 | — | — | — | — | — | SE 5 | — | SE 4 | SE 6 | SE 7 | SE 7 | SW 13 | SE 6 | ESE 5 | NW 15 | S 12 | NNW 7 | S 12 | — | SE 6 |
| kJ | 12 | — | — | — | — | — | 1 | — | 1 | 1 | 2 | 7 | 7 | 5 | 3 | 9 | 3 | 29 | 3 | — | 10 |
Wind waves Height (m) Direction Period (s) | NNW 6 | NW 9 | NNW 7 | NW 9 | NW 9 | NNW 8 | NNW 7 | NW 8 | — | — | — | — | — | — | — | — | SE 6 | ESE 6 | SE 6 | SE 6 | — |
| kJ | 130 | 427 | 355 | 551 | 460 | 452 | 125 | 238 | — | — | — | — | — | — | — | — | 9 | 30 | 24 | 32 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 65 | 65 | 178 | 65 | 65 | 65 | 46 | 9 | 9 | 9 | 92 | 9 | 9 | 9 | 23 | 0 | 0 | 0 | 9 | 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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