
Surf Forecasts:
Castelejo surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 10AM (local time) - 3.5ft (1.1m), 8s period, NW swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 1AM (local time) - 5ft (1.6m), 8s period, NW swell with 338 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 10AM (local time) - 3.5ft (1.1m), 8s 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 Sunday (Aug 16) at 10AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 1.0m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 1.6m 8s and forecast to arrive on Sunday (Aug 16) at 1AM. 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 12s period and expected on Friday (Aug 14) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 16th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 10AM (Sun 16th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 1AM (Sun 16th Aug) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, let’s break it down for Castelejo in the next couple of weeks.
It starts off pretty dead quiet. The first few days look rough – a moderate cross-onshore wind out of the north or northwest, blowing 15 to 25 mph, sometimes up to 30 mph, and it’s tearing up the little bit of swell that’s there. We're talking knee-to-waist high slop, with the surface blown out. Not worth dragging your board down for.
Hold out for Sunday, 16 August though. That morning the wind goes glassy – a complete flat calm. The swell is a modest 4 ft from the northwest with an 8-second period, but that glassy face means you’ll get clean little rides. The combined swell energy is moderate at 265. Castelejo (Castelejo) is a very consistent break, so even when it’s small, it’s generally working. It's an exposed spot, so it catches the swell. The water temperature is running about normal for the time of year.
Monday the 17th is another good shout. A light offshore breeze from the SSE at just 6 mph is going to hold up a 4 ft northwest swell (8-second period) into nice, clean waves. The energy is moderate (209). The morning is the clear winner here.
After that, the second week fades out pretty hard. From the 18th onward, the wind swings back to cross-onshore or onshore, and the swell gets small. By the 20th, we’re looking at waves under 2 ft. There’s one moment on the 21st with a longer-period (12 seconds) northwest swell, but it’s paired with a 15 mph cross-onshore wind, so it will be choppy and tough. The energy is moderate (214). The rest is all lumpy or blown out, especially by the end of the month with 30 mph winds and fresh onshore conditions.
The only true winners here are the glassy Sunday morning (16 August) and the offshore Monday morning (17 August). Both are small, but they’ll be clean and fun. For the rest of this 16-day stretch, the wind just doesn't let up. It can change, but right now, it’s a long wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue morning, min 19°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Thu morning, min 19°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 7 | NW 7 | NW 5 | NW 5 | NW 5 | NNW 6 | NNW 6 | WNW 10 | NNW 6 | WNW 10 | WNW 10 | NNW 7 | WNW 9 | WNW 9 | NNW 6 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 |
Wave Graph | |||||||||||||||||||||
68 | 77 | 51 | 41 | 49 | 87 | 57 | 107 | 115 | 163 | 123 | 199 | 139 | 130 | 181 | 162 | 257 | 338 | 133 | 260 | 227 | |
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 | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | glassy | cross-on | cross-on |
High Tide | 1:18PM2.69m | 1:53AM2.59m | 2:11PM2.93m | 2:42AM2.75m | 2:58PM3.11m | 3:26AM2.85m | 3:42PM3.20m | 4:08AM2.88m | 4:23PM3.20m | 4:47AM2.85m | 5:03PM3.09m | 5:26AM2.76m | 5:42PM2.90m | ||||||||
Low Tide | 7:01AM0.54m | 7:41PM0.30m | 7:55AM0.35m | 8:32PM0.09m | 8:42AM0.18m | 9:17PM-0.05m | 9:25AM0.08m | 9:59PM-0.10m | 10:06AM0.04m | 10:38PM-0.06m | 10:45AM0.09m | 11:15PM0.06m | 11:23AM0.21m | 11:51PM0.24m | |||||||
6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | |
— | 8:34 | — | — | 8:32 | — | — | 8:30 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 22 | 21 | 20 | 22 | 21 | 20 | 23 | 22 | 20 | 22 | 21 | 20 | 22 | 21 | 20 | 21 | 22 | 21 |
Feels °C | 20 | 19 | 18 | 20 | 19 | 18 | 20 | 19 | 18 | 21 | 20 | 17 | 20 | 19 | 17 | 21 | 19 | 18 | 23 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | NNW 9 | NNW 7 | NW 7 | WNW 10 | WNW 10 | WNW 9 | WNW 10 | WNW 9 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | NW 8 | NNW 8 | NNW 9 | NW 8 | NW 8 | NW 8 |
68 | 31 | 37 | 23 | 19 | 40 | 46 | 107 | 115 | 163 | 123 | 154 | 139 | 130 | 99 | 162 | 35 | 172 | 133 | 260 | 227 | |
Swell 2 Height (m) Direction Period (s) | NW 9 | NW 11 | W 6 | WNW 10 | NNW 12 | NW 11 | WNW 11 | NNW 10 | NNW 9 | NW 6 | WNW 12 | — | S 12 | — | NW 11 | S 18 | W 8 | NW 8 | NNW 8 | SW 15 | SW 15 |
41 | 5 | 3 | 10 | 15 | 31 | 40 | 18 | 16 | 30 | 56 | — | 3 | — | 5 | 6 | 6 | 147 | 122 | 9 | 8 | |
Swell 3 Height (m) Direction Period (s) | W 11 | — | WNW 11 | NNW 10 | NNW 9 | NW 8 | NW 10 | — | — | N 9 | NNW 9 | — | — | — | — | — | — | W 8 | SW 16 | — | — |
3 | — | 11 | 10 | 8 | 3 | 25 | — | — | 2 | 8 | — | — | — | — | — | — | 5 | 10 | — | — | |
Wind waves Height (m) Direction Period (s) | — | NW 7 | NW 5 | NW 5 | NW 5 | NNW 6 | NNW 6 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 6 | NW 6 | NNW 6 | NNW 7 | NW 9 | NW 8 | — | — | — |
— | 77 | 51 | 41 | 49 | 87 | 57 | 51 | 104 | 61 | 61 | 199 | 82 | 77 | 181 | 84 | 257 | 338 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 178 | 79 | 95 | 609 | 76 | 9 | 9 | 20 | 9 | 260 | 20 | 65 | 20 | 65 | 77 | 307 | 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.











