
Surf Forecasts:
Castelejo surf forecast from 4 Aug 2026:
- Most powerful swell: Friday 7 Aug, 1AM (local time) - 6.5ft (2.0m), 7s period, NNW swell with 423 kJ wave energy.
Best Forecast Surf Conditions for Castelejo this week:
The most powerful waves expected at Castelejo in the next 16 days are 2.0m 7s and forecast to arrive on Friday (Aug 07) 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 0.1m 12s period and expected on Thursday (Aug 06) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Fri 7th Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at the local situation for our stretch of coast.
Honestly, for the next week and a half, it's a pretty grim picture. The wind is just relentless, howling from the north and northwest, and it's making a mess of things. The swell is there, but it's windy, short-period junk for the most part. The only real glimmer of light is right at the very end of the 16-day window, on the 16th and 17th of August, when the wind eases up and we get a pulse of longer-period groundswell. That's the only time I'd even think about paddling out.
Let's start with the biggest letdown. For the first week, from Monday the 3rd right through to the end of the following week, the wind is a total killer. The surf is on offer, but it's all cross-on and onshore, with wind speeds hitting 19 mph or more. The combined swell energy is mostly moderate, hitting 214 (moderate) on the 6th, but it's all short-period slop at 6-7 seconds. The wind is just too strong. It's a kite-surfing setup, not a paddle-surfing one.
The best I can see is the weekend of the 15th and 16th of August. The water temperature is 66°F which is a solid 4°F colder than usual for this time of year, so you'll want a thicker suit. On the morning of Saturday the 15th, we have a 6 ft swell from the NW with a period of 7 seconds, but the wind is a light, glassy offshore from the NNW at 9 mph. The combined swell energy is a strong 329. By the afternoon, the swell jumps to 7 ft from the NW, still with that light offshore wind, and the energy hits 419. This is solid, clean surf. Then on Sunday the 16th morning, the swell peaks at 7 ft from the NW at 8 seconds, with a very light offshore breeze. The energy is pumping at 581. This is a strong, powerful swell. The break, Castelejo, is a beach and reef setup, so a long-period groundswell like this (8 seconds is solid) can be a bit straight at the beach, but the reef should line it up nicely. The wind is clean, so it will be a good session for experienced surfers – 7 ft is getting up there, so not for beginners. The crowds are listed as "sometimes", so they'll be around, but it's not a circus.
The 17th of August morning still has some size at 5 ft from the NW at 9 seconds, but the wind swings cross-on again, which is a shame. The energy is still strong at 380, but it won't be as clean as the day before.
So, to sum it up: don't bother until the 15th of August. The 16th of August morning looks like the standout, with a solid 7 ft NW swell and clean offshore winds. It's a long way out, so keep an eye on the charts, but that's the one to circle on the calendar.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue morning, min 18°C on Wed night). Winds increasing (light winds from the N on Mon night, fresh winds from the NNW by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Fri morning, min 18°C on Thu night). Winds decreasing (strong winds from the NNW on Thu night, moderate winds from the N by Sun morning). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 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 9 | WNW 9 | WNW 8 | WNW 8 | NNW 9 | NNW 6 | NW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 5 | WNW 8 | NW 11 | NW 5 | NW 9 | NW 5 | NNW 6 |
Wave Graph | |||||||||||||||||||||
111 | 108 | 70 | 84 | 58 | 143 | 152 | 229 | 423 | 250 | 228 | 248 | 97 | 60 | 42 | 20 | 30 | 51 | 24 | 34 | 97 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | 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 | on | cross-on |
High Tide | 6:34AM2.47m | 6:51PM2.56m | 7:21AM2.38m | 7:43PM2.40m | 8:19AM2.28m | 8:50PM2.25m | 9:34AM2.22m | 10:16PM2.18m | 10:59AM2.28m | 11:43PM2.25m | 12:16PM2.45m | 00:55AM2.41m | 1:18PM2.69m | 1:53AM2.59m | |||||||
Low Tide | 12:33PM0.51m | 1:04AM0.50m | 1:23PM0.63m | 1:56AM0.64m | 2:26PM0.75m | 3:05AM0.76m | 3:50PM0.81m | 4:30AM0.81m | 5:22PM0.73m | 5:54AM0.72m | 6:40PM0.53m | 7:01AM0.54m | 7:41PM0.30m | ||||||||
6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | |
— | 8:39 | — | — | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:35 | — | — | 8:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 21 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 19 | 21 | 20 | 19 |
Feels °C | 22 | 21 | 20 | 19 | 17 | 14 | 16 | 16 | 13 | 18 | 17 | 15 | 17 | 18 | 18 | 19 | 19 | 16 | 18 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 10 | W 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 7 | NW 10 | W 6 | NW 9 | WNW 6 |
111 | 108 | 70 | 84 | 48 | 19 | 33 | 48 | 32 | 28 | 28 | 27 | 15 | 15 | 14 | 20 | 28 | 25 | 24 | 20 | 8 | |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | NNW 11 | NNW 10 | NNW 9 | WNW 10 | — | — | — | — | — | — | — | W 6 | NW 13 | NNW 12 | NW 11 | — | NW 9 | W 11 | WNW 11 |
1 | 1 | 13 | 40 | 58 | 37 | — | — | — | — | — | — | — | 1 | 7 | 14 | 30 | — | 21 | 2 | 11 | |
Swell 3 Height (m) Direction Period (s) | — | S 13 | W 11 | WNW 10 | WNW 10 | S 14 | S 12 | — | — | — | — | — | — | — | N 11 | N 8 | — | — | W 12 | — | NW 14 |
— | 3 | 2 | 20 | 33 | 4 | 3 | — | — | — | — | — | — | — | 2 | 1 | — | — | 3 | — | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | NW 4 | — | NNW 4 | NNW 6 | NW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 5 | NNW 4 | NNW 3 | NW 5 | NNW 4 | NW 5 | NNW 6 |
— | — | 8 | — | 8 | 143 | 152 | 229 | 423 | 250 | 228 | 248 | 97 | 60 | 42 | 10 | 4 | 51 | 15 | 34 | 97 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 9 | 411 | 327 | 76 | 297 | 92 | 73 | 690 | 172 | 73 | 227 | 179 | 250 | 245 | 77 | 390 | 265 | 260 |
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.











