Forecast apps do not replace eyeballing the ocean, but they stop wasted petrol and wrong-beach days. On the Costa Vicentina, swell direction, period, and Nortada-style wind separate fun from slog. Below: main tools in 2026 and the numbers that matter for Aljezur.
Surfline
What it does well: Clean interface, lots of spot-specific forecasts, cams at some locations, decent swell/wind/tide charts. Many surfers use it as their default daily check.
Downsides: The best features (longer-range detail, some cams, premium models) sit behind Surfline Premium. Magicseaweed was folded into Surfline, so if you miss MSW, this is where that audience largely landed.
For the Costa Vicentina: Useful for orientation, but always cross-check wind with a dedicated wind app — Surfline can be right on swell and still miss how quickly the sea breeze turns the afternoon onshore at your specific beach.
Windy
What it does well: Outstanding visual wind maps (and rain, waves, multiple models). Great for seeing whether the Nortada will fill in early or hold off until afternoon. Free tier is genuinely usable.
Downsides: Surf-specific “quality” scores are less nuanced than dedicated surf sites; you still interpret swell yourself.
Best for: Wind timing, squalls, and comparing ECMWF vs GFS when you care about a few hours’ difference.
Windguru
What it does well: Dense tables trusted by windsurfers and surfers on the Iberian coast for years. Strong for hour-by-hour wind and gusts at coastal stations.
Downsides: UI is utilitarian; beginners can feel overwhelmed until they learn which rows to hide.
Best for: “Will Monte Clérigo be blown out by 11am?” type questions.
Surf-Forecast.com
What it does well: Global swell maps, period contours, and spot pages with a more “meteorology” feel. Handy when you want to see how a swell marches toward Portugal.
Downsides: Spot granularity still needs local knowledge — the Algarve’s nooks matter.
Best for: Big-picture swell trains and direction before you drill into a single beach.
Quick comparison
| App / site | Strength | Weakness | Free tier |
|---|---|---|---|
| Surfline | Surf-first UX, cams (where available) | Paywall for depth | Basic free |
| Windy | Wind visuals, models | Less surf “feel” | Strong free |
| Windguru | Wind detail, gusts | Busy tables | Free + extras |
| Surf-Forecast | Swell maps, period | Needs local interpretation | Mostly free |
Which is “best” for Aljezur?
There isn’t one winner. A practical stack:
- Windy or Windguru for morning vs afternoon wind.
- Surfline or Surf-Forecast for swell height, period, and direction.
- Your eyes at the beach.
That matches how we teach reading conditions in how to read surf conditions — apps give hypotheses; the ocean confirms.
Key metrics to read (skip the rest at first)
- Swell direction (degrees or cardinal): On this coast, W–NW is the bread and butter; SW can light up certain corners.
- Swell period (seconds): Longer usually means more organised, powerful groundswell; short periods are often weaker wind swell.
- Wind direction: Offshore (from land toward sea on this coastline) grooms waves; onshore chops them.
- Tide: Same swell can be perfect or closed-out depending on sandbanks — tide charts are non-negotiable.
Free vs paid: is premium worth it?
Paid can help if you live here full-time or chase specific windows — better long-range models and cam access add up. Free is enough for many visitors: check two models, pick a morning slot in summer, and stay flexible.
If you’re booking a short trip, our best time to surf Aljezur article lines up seasons with what you’ll see in the apps.
Ground your forecasts in safety
Forecasts don’t show rip currents, crowds, or your fitness on the day. Pair tech with surf safety in Portugal and realistic spot choice — e.g. Arrifana for many intermediates vs more exposed beaches when you’re ready.
Surfing Aljezur without hauling boards on a plane? We rent soft-top boards (6'6, 7'0, 7'8, 8'6) and seasonal wetsuits with free delivery to Aljezur, Arrifana, Vale da Telha, and Monte Clérigo (broader Costa Vicentina — ask case-by-case) — see /pricing or contact / WhatsApp +31613262259.
Do I need different apps for tide?
Many surf apps include tides; dedicated tide apps (national hydrographic sources or simple tide tables) are fine too — pick one you’ll actually open.
Why did my forecast say “good” but the beach was messy?
Model resolution, local wind not captured at the exact headland, or tide changing the bank. Always reconcile with a beach check.
ECMWF vs GFS — which for Portugal?
Many locals compare both on Windy when a frontal system approaches. If they agree, confidence goes up; if they diverge, be cautious with long-range plans.
Can I rely on surf cams only?
Cams help but miss corners of the beach, period “feel”, and crowd dynamics. Use them as one input, not the only one.