Surf Forecasts:
Castelejo surf forecast from 2 Sep 2026:
- Best quality surf: Saturday 5 Sep, 10AM (local time) - 4.5ft (1.3m), 6s period, NW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 4PM (local time) - 7ft (2.1m), 10s period, NW swell with 862 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 7AM (local time) - 3.5ft (1.0m), 7s 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 Thursday (Sep 03) at 7AM. The primary swell is predicted to be 1.0m and 7s 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 2.1m 10s and forecast to arrive on Tuesday (Sep 08) at 4PM. Winds are predicted to be 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 Thursday (Sep 03) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 3rd Sep) | 3.5ft (1.0m) 7s |
| Best Surf | 10AM (Sat 5th Sep) | 4.5ft (1.3m) 6s |
| Most Powerful | 4PM (Tue 8th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, let’s break it down.
First part of the outlook is a grind. Castelejo faces NW, and while there’s swell around, the wind is a headache most days. There’s a gap right now with nothing worth paddling for until we get a cleaner window.
Thursday the 3rd finally gives us a break. Morning is clean with a light NE cross-off breeze and small 3ft NW swell, period around 7 seconds. Wave energy is low (110), but it’s rideable. Thursday afternoon goes glassy with a 5 km/h easterly breeze. Swell drops to about 2ft from the NW, energy down to 70. Not pumping, but if you want a glassy session, that’s your early window. Water temp is 67°, which is about 4° colder than usual for this time of year — noticeably cooler.
Friday the 4th stays small. Morning has a clean 2ft WNW swell with light ENE cross-off wind. Low energy again (62). Afternoon goes cross-onshore from the west and gets choppy — skip it.
Saturday the 5th morning brings a little life. Cloudy, light southerly wind, 4ft NW swell with a short 6-second period. Energy is moderate at 200. Clean conditions with that cross-off breeze. This is probably your best call in the first week. Not huge, but fun.
Sunday the 6th morning sees the period jump to 13 seconds from the NW, but the wind is cross-onshore from the NNW at 15 km/h and it’s messy. Energy is moderate (346), but the onshore wind ruins it. Afternoon stays onshore. Not worth it.
Monday the 7th and Tuesday the 8th have more size and energy — up to 7ft NW on Tuesday afternoon with 862 energy — but the wind stays cross-onshore or onshore and strong. It’s lumpy, choppy, messy. Kite surfers might be into it, but for a paddle surfer, it’s a no-go.
Wednesday the 9th and Thursday the 10th keep the same story. Plenty of swell, but NNW winds at 30-40 km/h make it ugly. Friday the 11th and Saturday the 12th drop period to 6 seconds, but the wind is still cross-on or onshore. Not good.
Here’s the real standout: Sunday the 13th morning. Glassy conditions with a northerly breeze dropping to 5 km/h. Swell is 5ft from the NW, period 8 seconds, and wave energy is moderate at 307. It’s clean. That’s the session to circle. Afternoon goes a bit cross-shore from the southwest, but the morning is the one.
Monday the 14th is small and clean in the morning — 1ft NW swell at 11 seconds, but energy is low (101). Not much to work with.
The last couple days, the 15th and 16th, see onshore winds return and rising swell. Wednesday the 16th morning has 6ft NW swell at 12 seconds, energy up to 907, but the wind is cross-onshore from the NNW. It’ll be a mess again. More for the kite crew.
So to sum it up: Thursday the 3rd afternoon glass-off and Saturday the 5th morning are your early picks, but the real highlight is Sunday the 13th morning with glassy clean conditions and a solid 5ft NW swell. Don’t miss it.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Thu afternoon, min 18°C on Tue night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 35°C on Fri night, min 22°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 8 | WNW 8 | WNW 8 | NW 8 | NW 6 | NW 9 | WNW 9 | NW 13 | NW 12 | WNW 16 | WNW 13 | WNW 12 | NNW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 427 | 460 | 244 | 196 | 126 | 102 | 49 | 48 | 47 | 44 | 171 | 132 | 176 | 68 | 230 | 273 | 288 | 468 | 485 | 406 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | cross-off | cross-off | cross-off | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 12:12PM2.48m | 00:52AM2.39m | |||||||
Low Tide | 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 | 5:54AM0.77m | 6:41PM0.50m | ||||||||
 |  | | | | | |  |  | |  | |  | | | | | | | | |
 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — |
 | 8:05 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 24 | 23 | 29 | 30 | 31 | 30 | 29 | 27 | 35 | 31 | 32 | 29 | 30 | 27 | 24 | 24 | 22 | 20 |
Feels °C | 15 | 14 | 21 | 20 | 26 | 29 | 31 | 27 | 29 | 26 | 32 | 30 | 30 | 27 | 29 | 25 | 22 | 21 | 20 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 8 | WNW 8 | WNW 8 | NW 10 | NW 6 | NW 9 | WNW 9 | NW 13 | NW 12 | NW 11 | WNW 13 | WNW 12 | WNW 11 |
| kJ | 8 | 8 | 244 | 196 | 126 | 102 | 49 | 48 | 47 | 44 | 25 | 132 | 176 | 68 | 230 | 273 | 169 | 468 | 485 | 353 |
Swell 2 Height (m) Direction Period (s) | — | SSW 14 | NNW 9 | SW 15 | SW 14 | SE 7 | NW 9 | NNW 7 | NNW 6 | SE 6 | ESE 6 | WNW 9 | NW 14 | NW 15 | WNW 9 | WNW 8 | WNW 16 | NNW 10 | ESE 5 | — |
| kJ | — | 20 | 16 | 9 | 8 | 7 | 21 | 26 | 15 | 10 | 3 | 68 | 7 | 56 | 70 | 64 | 288 | 90 | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | SW 15 | — | — | SW 14 | SE 6 | SE 6 | SE 6 | NW 8 | SW 13 | SE 6 | E 5 | NW 11 | NW 10 | SE 7 | NW 9 | WNW 9 | — | — |
| kJ | — | — | 8 | — | — | 8 | 10 | 5 | 10 | 3 | 7 | 1 | 1 | 32 | 28 | 7 | 20 | 15 | — | — |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 8 | NNW 7 | — | — | — | SE 6 | — | — | NW 6 | NW 8 | — | — | NNW 5 | NNW 4 | NNW 4 | NNW 6 | NW 6 | NW 6 | NNW 7 |
| kJ | 427 | 460 | 116 | — | — | — | 38 | — | — | 15 | 171 | — | — | 37 | 18 | 22 | 128 | 124 | 181 | 406 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 609 | 46 | 9 | 9 | 9 | 0 | 0 | 9 | 0 | 69 | 10 | 0 | 0 | 9 | 9 | 9 | 9 | 9 | 9 | 20 |
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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