Surf Forecasts:
Castelejo surf forecast from 27 Aug 2026:
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 7ft (2.2m), 11s period, WNW swell with 1,123 kJ wave energy.
Best Forecast Surf Conditions for Castelejo this week:
The most powerful waves expected at Castelejo in the next 16 days are 2.2m 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 0.1m 11s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Fri 28th Aug) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at the forecast for Castelejo. This is a beach and reef setup that’s very consistent, exposed to the open ocean, and works best with a swell from the NW. The water temperature is about average for the time of year, so nothing out of the ordinary there.
We’ve got a bit of a slow start, with no real surf on offer for the first few days. Thursday the 27th of August sees some swell, but it’s sloppy and messy with strong cross-shore winds. Thursday morning has a 5ft W swell at 8 seconds, but it’s chopped up with a fresh 30 km/h wind, so it’s not worth paddling out. Friday morning is a bit better, with a 7ft WNW swell at 10 seconds, but it’s still cross-on and windy. The energy is moderate (1060), but the conditions just aren’t there.
The weekend doesn’t bring much hope either. Saturday the 29th through to Monday the 31st are all blown out with strong onshore winds, and the swell is small and weak. The combined energy drops off to below 300, so it’s a flat, messy affair. Tuesday the 1st of September picks up a bit of size, with a 6ft NW swell, but the wind is howling from the NNW at 40 km/h, making it a complete write-off.
Things start to look up by Thursday the 3rd of September. The morning still has a fresh 30 km/h wind, but it’s cross-off, and the swell is a clean 5ft from the NW. The wind swings lighter in the afternoon, with a light 10 km/h ENE cross-off, and the swell drops to 5ft from the NNW. The combined energy is low (238), but the conditions are clean. It’s a small day, but it’s the first decent window.
Friday the 4th is more of the same: small, clean, and light winds. The 4ft NW swell is knee-high, but it’s surfable.
Now, here’s the standout. Saturday the 5th of September is the best on offer. The morning shows a 2ft NW swell, but the period is a long 13 seconds, and the wind is a gentle 15 km/h ESE cross-off. The energy is low (248), but that long period groundswell will wrap nicely into the reef. The afternoon is even better: a 3ft NW swell at 12 seconds with a gentle 15 km/h SE offshore wind. The combined energy is 364, and it’s clean. This is a classic small, glassy, offshore day for the reef.
Sunday the 6th keeps the good vibes going with a 4ft NW swell at 12 seconds in the morning, and a gentle cross-off wind. The afternoon sees similar conditions with a 4ft NW swell and a 15 km/h SE offshore. The energy is moderate (469), and it’s clean. This is a solid weekend window.
Monday the 7th is the last of the good stuff, with a tiny 2ft NW swell at 10 seconds in the morning, but the wind is a light 5 km/h from the south, making it glassy. The afternoon is even better, with a 2ft NW swell and glassy conditions.
After that, the forecast gets messy again from Tuesday the 8th onward, with onshore winds and lumpy conditions. The 9th and 10th have some swell, but the wind is onshore and the period is short.
So, to wrap it up: the first week is a write-off, but the weekend of the 5th and 6th of September is your best bet. The standout is Saturday afternoon, with a clean, offshore 3ft NW swell at 12 seconds. It’s small, but it’ll be perfect for the reef. Keep in mind, with a long period like that, the sets will be spaced out, making paddling easier. The crowd profile is “sometimes,” so you might have some company, but it’s not a zoo.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Warm (max 21°C on Wed night, min 18°C on Fri night). Winds increasing (light winds from the W on Thu night, fresh winds from the NNW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 18°C on Mon night). Mainly strong winds. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | W 8 | WNW 8 | WNW 8 | WNW 10 | NW 11 | NW 10 | NW 10 | NW 9 | NNW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NNW 7 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NNW 8 |
Wave Graph | |||||||||||||||||||||
316 | 441 | 516 | 1060 | 1090 | 954 | 597 | 406 | 394 | 93 | 187 | 250 | 212 | 156 | 332 | 599 | 525 | 573 | 445 | 381 | 558 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 2:55PM2.83m | 3:15AM2.65m | 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 | ||||||||
Low Tide | 8:41AM0.37m | 9:08PM0.23m | 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 | |||||||
7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 8:12 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:02 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 21 | 20 | 20 | 20 | 21 | 20 | 19 | 22 | 22 | 20 | 22 | 21 | 19 | 20 | 20 | 19 | 22 | 22 | 26 |
Feels °C | 17 | 17 | 19 | 17 | 16 | 16 | 17 | 16 | 15 | 20 | 20 | 15 | 17 | 16 | 14 | 16 | 14 | 13 | 19 | 20 | 24 |
Swell 1 Height (m) Direction Period (s) | S 11 | WNW 8 | WNW 8 | WNW 10 | NW 11 | NW 10 | NW 10 | — | — | NW 8 | NW 12 | NW 10 | NW 9 | NW 9 | NW 10 | SW 15 | SW 15 | SW 14 | NW 8 | SW 15 | SW 14 |
2 | 441 | 516 | 1060 | 1090 | 954 | 597 | — | — | 93 | 6 | 250 | 212 | 156 | 127 | 9 | 8 | 8 | 445 | 9 | 8 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | — | — | — | — | — | — | — | W 13 | WNW 12 | SW 17 | SW 16 | SW 16 | — | — | — | SW 15 | — | SW 14 |
2 | 2 | 2 | — | — | — | — | — | — | — | 3 | 14 | 12 | 10 | 10 | — | — | — | 9 | — | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | NW 9 | NNW 8 | NNW 5 | NW 8 | NNW 6 | NNW 5 | NW 5 | NNW 7 | NW 9 | NW 9 | NW 8 | — | NW 8 | NNW 8 |
316 | — | — | — | — | — | — | 406 | 394 | 46 | 187 | 136 | 41 | 64 | 332 | 599 | 525 | 573 | — | 381 | 558 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 405 | 139 | 1 | 9 | 118 | 65 | 49 | 609 | 77 | 77 | 609 | 65 | 178 | 609 | 65 | 65 | 65 | 65 | 46 | 11 | 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.











