Surf Forecasts:
Castelejo surf forecast from 4 Sep 2026:
- Best quality surf: Thursday 10 Sep, 1PM (local time) - 2.5ft (0.7m), 12s period, NW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 7PM (local time) - 4.5ft (1.4m), 12s period, WNW swell with 530 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 1PM (local time) - 3ft (0.9m), 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 1PM. The primary swell is predicted to be 0.9m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 1.4m 12s and forecast to arrive on Monday (Sep 07) 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 5s period and expected on Friday (Sep 04) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sat 5th Sep) | 3ft (0.9m) 9s |
| Best Surf | 1PM (Thu 10th Sep) | 2.5ft (0.7m) 12s |
| Most Powerful | 7PM (Mon 7th Sep) | 4.5ft (1.4m) 12s |
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, Friday morning kicks things off with a tiny 2ft swell from the WNW, but the water is a very unusual 3° colder than normal for this time of year. The combined energy is weak (61). It’s surfable, but very ordinary. The afternoon sees a clean offshore wind from the SSE, but the swell is still tiny.
Saturday the 5th brings a bump to 3ft from the NW, but the morning is ruined by a cross-on wind. The afternoon, however, goes glassy – that’s a major positive, and the wave energy is moderate (125). Worth a paddle for sure.
Sunday the 6th has a bit more size at 4ft and a long-period 12-second groundswell, but the wind is a choppy cross-onshore all day. The energy is strong (440), but the conditions are poor. Monday the 7th is even worse – 4ft with a fresh cross-on wind and 15 mph, energy is very strong (618). Same story Tuesday through to Thursday morning: wind is onshore or cross-on, making it messy.
Then we get a glimmer. Thursday the 10th afternoon goes glassy again with a 3ft NW groundswell. The energy is moderate (291) and the conditions are good. That’s a solid session.
The next few days are a mixed bag of small, clean conditions on the 12th and 13th, but the swell is tiny. On the 13th Sunday morning, it’s glassy with 3ft NW groundswell and moderate energy (206). A nice, clean option.
From the 14th onward, the wind turns nasty again – cross-on and onshore, with the swell building. By the 16th, the swell hits 6ft to 7ft, but it’s all wind-affected and short period. The energy is huge (692), but for a surfer, it’s just a messy, blown-out mess. This setup is more interesting for kite surfing than paddle surfing.
Now, the real standout. Saturday the 19th of September. The morning sees a solid 7ft swell from the NW with a clean cross-off wind from the S. The combined energy is very strong (647). The afternoon bumps to 8ft and the wind holds clean from the SSW. This is the best on offer. The water is still cold, so bring a full suit. For experts, this is the one to circle on the calendar. For beginners, 8ft is too big and will be a handful.
The pick of the forecast:
Saturday the 19th of September – Castelejo. 7ft to 8ft NW swell, clean cross-off wind, very strong energy. A true standout for experienced surfers. Crowds are likely – it’s a consistent spot.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 19°C on Tue night). Winds decreasing (fresh winds from the NNW on Tue afternoon, light winds from the N by Wed night). | ||||||||||||||||||||
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 | NW 8 | NW 9 | NW 9 | NW 14 | NW 12 | NW 12 | WNW 15 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | NW 10 | NNW 7 | NNW 6 | NW 8 | NNW 6 | NNW 12 | NNW 12 | NNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 47 | 45 | 69 | 115 | 115 | 208 | 330 | 303 | 234 | 420 | 477 | 401 | 281 | 225 | 205 | 141 | 244 | 141 | 131 | 239 | 180 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | on | cross-on | glassy | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | glassy | cross-on |
High Tide | 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 | 28 | 32 | 28 | 31 | 29 | 28 | 29 | 26 | 27 | 26 | 25 | 23 | 22 | 21 | 20 | 20 | 20 | 20 | 23 | 23 | 26 |
Feels °C | 27 | 31 | 27 | 31 | 29 | 26 | 27 | 24 | 24 | 21 | 20 | 19 | 16 | 16 | 16 | 18 | 17 | 19 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 12 | NW 12 | NW 11 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | NW 10 | NW 9 | NW 8 | NNW 10 | NW 11 | NW 10 | NNW 12 | NNW 11 |
| kJ | 47 | 45 | 69 | 115 | 115 | 135 | 330 | 303 | 166 | 420 | 477 | 401 | 281 | 225 | 132 | 100 | 39 | 119 | 98 | 239 | 180 |
Swell 2 Height (m) Direction Period (s) | NNW 6 | NNW 6 | NW 10 | S 12 | NW 16 | NW 14 | NW 9 | SE 6 | WNW 15 | NNW 10 | NNW 10 | ESE 5 | SE 5 | — | — | — | — | NW 14 | NNW 12 | WNW 7 | NW 5 |
| kJ | 14 | 6 | 25 | 3 | 10 | 208 | 110 | 6 | 234 | 64 | 37 | 2 | 1 | — | — | — | — | 49 | 131 | 18 | 42 |
Swell 3 Height (m) Direction Period (s) | SE 6 | SE 6 | SSE 4 | — | S 12 | SE 5 | SE 6 | W 18 | WNW 9 | WNW 9 | SE 5 | — | — | — | — | — | — | — | WNW 8 | WNW 7 | WNW 7 |
| kJ | 5 | 5 | 2 | — | 3 | 1 | 6 | 7 | 30 | 16 | 7 | — | — | — | — | — | — | — | 20 | 11 | 10 |
Wind waves Height (m) Direction Period (s) | — | ESE 6 | — | NW 5 | — | — | — | NW 8 | NW 6 | NW 7 | NW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 7 | NNW 6 | NW 8 | NNW 6 | NNW 5 | NW 5 | — |
| kJ | — | 36 | — | 10 | — | — | — | 118 | 132 | 118 | 135 | 243 | 106 | 103 | 205 | 141 | 244 | 141 | 33 | 23 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 46 | 9 | 0 | 9 | 9 | 9 | 12 | 16 | 256 | 20 | 20 | 260 | 181 | 65 | 279 | 65 | 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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