The places that stay rideable when the nortada blows are the ones the coastline turns away from the north: bays tucked behind a headland or high cliffs, and beaches that face south, from Ericeira's Praia da Calada to Sesimbra, Arrifana and the Algarve's Sotavento. The nortada is the name Portugal's weather service, IPMA, gives to the north or northwest wind on the western coast of the mainland, strongest in the afternoon and typical of the hottest months, May to September (IPMA, Glossário Meteorológico). Because it builds through the day, the second half of the answer is timing: a sheltered spot early in the morning often beats an exposed one at 3 p.m. Shelter has a price, though. The same headland that blocks the wind often blocks some of the swell, so a protected bay can be clean and small at once. The useful question is which spot keeps enough swell while losing the wind, at the hour you can actually get there.
How often does the nortada actually blow?
Often enough to plan around rather than hope past. A study of Lisbon's wind regime, built on IPMA records from 2004 to 2010, found a relatively strong north wind dominating on 45% of spring and summer days, defined in that work as wind above 5 m/s, about 11 mph (Lopes, Advances in Meteorology, 2013). That is one study, for one city's coastal wind, but it matches what we see from the sand.
What does the nortada do to the water?
The nortada also moves the water. It pushes warm surface water offshore and pulls colder water up from below, which is why the west coast stays cold in a hot summer. We cover the wetsuit side of that elsewhere on the blog.
What are the key nortada figures?
| What | Figure | Source |
|---|---|---|
| Nortada season | North/northwest wind, afternoon peak, May to September | IPMA glossary |
| Lisbon spring/summer days with nortada | 45% (2004–2010 records) | Lopes, 2013 |
| Water when the nortada weakened, late July 2026 | Leixões about 22°C (72°F); Faro and Sines 19–21°C (66–70°F) | SOL, July 2026 |
| Yellow wind warning, September 29, 2026 | Gusts up to 80 km/h (about 50 mph), eight districts | JN |
That last row is a reminder that strong wind does not keep to the nortada calendar. Autumn storm wind can come from a different quarter, so a bay that hides from the north may be wide open to it.
Step 1: What time should you surf on a nortada day?
Early. IPMA's own definition puts the nortada's peak in the afternoon, so the morning is usually the quietest stretch of a windy day. On an exposed west-facing beach that can mean a clean hour or two before the texture arrives, then a long, choppy afternoon.
Read the wind hour by hour, not as a daily average. A day summarized as "15 knots north" might be 5 knots at 8 a.m. and 20 by mid-afternoon. Our forecast runs hourly, 192 hours out, and updates four times a day, so the shape of the day is visible a week ahead and sharpens as it gets closer.
Keep the error bars in mind. Our accuracy panel puts average wind error at about ±1–3 kn depending on lead time. On a morning forecast to sit at 6 knots, that is the difference between glassy and lightly textured, not between clean and blown out.
Step 2: Is it north or northwest at your spot?
The nortada is a north or northwest wind, and that 45° swing matters. A bay shielded by cliffs on its north side can still take a northwest wind across its face. A bay that faces southwest may turn a northwest wind almost offshore.
This is why we never model shelter as a yes or no. At Peel Watch, each spot profile carries a wind tolerance and a set of sheltered wind sectors: a range of directions the local land blocks. The wind factor in the 0–5 score drops off as the forecast direction leaves that range. One factor going to near zero sinks the whole hour, because the score multiplies its parts rather than adding them.
The practical reading: check the forecast direction in degrees, not just the label. "N" and "NNW" can be two different days at the same beach. How offshore and onshore wind shape a wave is covered in more depth elsewhere on the blog.
Step 3: Where does the coast turn its back to the north?
The descriptions below come from independent surf guides, cross-checked against each other. IPMA does not publish break-by-break shelter data, so treat these as local topography, not official ratings.
The north coast
Esposende is described as more protected than its neighbors and a place to go when the northern coast is too big or windy (The NonMad). Up here the nortada is close to a daily fixture in summer, so the morning matters even more.
Ericeira and the Lisbon coast
Praia da Calada gets protection from the summer nortada from the high cliffs on the north side of its bay, and São Lourenço is also described as sheltered from strong north winds, helping it stay glassy (Surf Atlas, Ericeira guide).
Peniche and the Silver Coast
Surf guides describe a fort-backed beach just south of Peniche as sheltered from north wind, with a punchy reef-assisted peak used as a fallback when Supertubos is blown out. Reef means shallow in places; check the hazard notes before paddling out.
Setúbal Peninsula
Sesimbra is a fishing town with a south-facing bay that catches swell from the southwest and sits out of the dominant northwest wind.
Southwest Alentejo and Aljezur
Arrifana is a horseshoe bay sheltered from the north by its headland, with a right-hand point and a beach break. Amado still takes plenty of swell, but cliffs to its north make it much more protected from the summer north wind.
Sagres and the Algarve
Sagres has west- and south-facing beaches a few miles apart, so Beliche or Tonel often work when the west side is blown out; we walk through that example in a separate post on beach facing. Further east, the Sotavento beaches of Tavira, Culatra Island and Monte Gordo have weak nortada exposure, and while no beach is entirely immune, this stretch is described as the least windy part of the country (Praias de Portugal).
Step 4: Will enough swell still reach the sheltered spot?
This is where most fallback plans fail. Shelter from a north wind usually comes from land on the north side, and land on the north side also blocks swell arriving from the north.
Sesimbra is the clearest case. Its bay faces south and catches southwest swell. On a day with a northwest swell and a northwest wind, the bay may be calm, clean and close to flat. Lovely for a swim. Less so for a surf.
The skill level changes the verdict. A sheltered bay with knee-to-waist waves can score well for a novice, whose ideal band on our L1 level is 0.3–0.9 m breaking height, and poorly for an advanced surfer at L4, whose band starts at 1 m. Same bay, same hour, two different numbers. That is not the model hedging; it is the model knowing who is asking.
So pair the two checks: wind direction inside the sheltered sector, and swell direction still inside the spot's swell window.
Step 5: How do you confirm it before you drive?
Open the surf dashboard, set your level, and filter by region. Neighboring spots share one offshore forecast; their orientation, seabed and tide preference are what separate them, which is exactly what you are trying to exploit on a nortada morning.
Then look, where you can. We link 69 live MEO Beachcam feeds, and a camera shows whether the wind on the water matches the wind in the forecast. A spot with a provisional badge has not had its profile checked by a person yet, so its sheltered sectors are our best measurement, not a confirmed one. Reading sandbanks on a camera is covered in a separate post.
One last filter: a 0.2 difference in score between two sheltered spots is inside our forecast error. Pick the shorter drive.
What goes wrong at each step?
The mistakes follow the five steps: timing, direction, shelter, swell and confirmation. There is also one that belongs to everyone else on the beach.
Which mistakes match each step?
The same handful of mistakes, in roughly the order above:
- Timing. Arriving at 11 a.m. for a forecast that was clean at 8. The nortada does not wait while you find parking.
- Direction. Reading "north" as one direction. A bay that blocks N can be wide open to NW, and the forecast label often hides that.
- Shelter. Assuming shelter is permanent. These descriptions refer to the summer nortada; an autumn storm with gusts like the 70–90 km/h (about 43–56 mph) IPMA flagged on October 6, 2026 (Away, October 2026) can come from elsewhere entirely. Check current warnings on the day.
- Swell. Driving to a protected bay without checking it faces the swell. Clean and flat is still flat.
- Confirmation. Trusting the forecast over the camera, or a small score gap over a long drive.
Why are sheltered bays crowded on nortada days?
There is also a mistake that belongs to everyone else on the beach. A sheltered bay on a nortada day draws every surfer from the exposed beaches nearby. Calm water and a crowd of boards is a different hazard for swimmers and anyone fishing from the rocks.
How do swell alerts fit a nortada plan?
The swell alerts run per spot and per level, 1–3 days ahead, which suits a nortada plan: pick the sheltered bay that matches your level, and let the email tell you when its wind sector and swell window line up. Most summer mornings on the west coast, they line up before lunch or not at all.