Portugal
Ilha Comprida (Cabo Frio)Cabo Frio
dangerousswell on the quarter today
- window
- —
Fine sand strip with rocks, small caves and corals, 8–18 m, by boat; rays, morays and small sharks.
Google MapsCabo Frio spearfishing forecast — wind, swell, visibility, tides & live cameras
2.5
wave 1.2 m head-on
visibility1m
Today — sit it out — wave, wind and surge pounding.
Sources: IPMA · buoys · Copernicus · Sentinel-2 — high confidence · data 08:27
Sources & confidence
- Sources
- IPMA · NDBC & IH buoys · Copernicus Marine · Sentinel-2
- Method
- spearo sea-state engine: 6-model consensus + satellite clarity (ZSD) + buoy-bias checks
- Freshness
- Re-read every hour, per coast
Compiled by the spearo sea-state engine · How it works →
The verdict comes from seven water factors and hard safety gates — not ten tabs. Go or stay.
How we score the water
Our own model
Our own forecast engine — not a third-party widget. It weighs these water factors into one go-or-stay verdict for this coast; the 0–10 dial is that verdict, read out as a number.
- Swell & wave memory
- Height, period and direction of the swell, plus the wake of recent storms — an old storm still stirs the water, and the engine remembers.
- Wind & gusts
- Speed and gusts, hour by hour — wind speed and an onshore push chop the surface and cut visibility.
- Tide phase
- Timing and range of the tide, calibrated per coast — big spring tides pull the verdict toward caution.
- Water temperature
- Sea-surface temperature — sharply cold water vetoes a green verdict.
- Currents & outflow
- Direction and drift of the current — it pushes you, and it drags turbid coastal water across where you dive.
- Rain runoff & air clarity
- Rain muddies the water inshore through land runoff, while fog and haze cut visibility at the surface.
- Coast shape & exposure
- How the coast faces the swell — a sheltered cove keeps the water clean; an exposed, head-on point takes a penalty.
Safety gates
- Thunderstorm forecast — an instant red, no exceptions.
- An official warning (MeteoAlarm / IPMA) — yellow, or red for the higher ranks.
- Missing input data — a would-be green is capped to yellow rather than overstated.
- Strong disagreement between forecast models — a green day is pulled back to yellow.
- Night hours — where night spearfishing is banned by law the window is forced red; where it is legal (Australia outside NSW, New Zealand, South Africa) it is capped at yellow, never green.
It all folds into a single 0–10 score and one verdict: go or stay.
A forecast, not a guarantee — the sea has the last word.
Where to get in, where to hunt
Entry points with coordinates
Seabed relief — promising ground
Surface
Wind, wave and the swell windows — when to go and the best hours.
spearo.app
INMET no dataupdated 08:27
Cabo Frio — solo, off the rocks
don't go · wave 1.2 m (occasionally up to ~2.5 m)
wave 1.2 m head-onwind 19, gusts 32 km/hsurge pounding the rocksvisibility ~1 m
today, best window 12:00–15:00
fish · Visibility 1 m · Water 22.5°C
confidence low · verdict for the selected day
Whole week — tap a day. is driving swell right now.
Solo risk: carry a float · tell someone your plan and exit time · doubt = don't go. A model-based planner; the call is made on site.
Selected day
Windows, hours
and the day's trends.
The day is picked above, in the hero. Here are that day's windows, the hour-by-hour map and the trends. Tap a window to break down the conditions.
Wednesday · today2026-09-09
05:50–17:40 · new moon
▲ 00:00▼ 07:00▲ 14:00▼ 20:00mid-range tides · 1.2 m
Hours (06→20)
06
09
12
15
18
Day's trends
Tide0.35 m
Wave1.16 m
Wind20 km/h
Water23 °C
fish activity: moonrise 04:42 · moderate · moon overhead 10:30 · high · moonset 16:20 · moderate · moon underfoot 22:50 · high
Conditions window12:00–15:00
don't go fish
Hs 1.24 m · roughperiod 9.1 s head-onwind 19→32surge 6.1viz 1 m
1.24 mrough · up to ~2.48 · 175° head-on
9.1 sswell moderate
19→32gusts 32 km/h
6.1pounding the rocks
0.25m/s
1 mrecent swell
22.5°C5 mm + hood
▲14:00tide turn near
Atmosphere26 kmlandmarks visible
lowoff the lunar peaks
- wave 1.2 m (occasionally up to ~2.5 m)
- steep wind-wave — choppy surface, careful on entry
- near high water — movement slowing
confidence lowday
Coming soon
Get the go / no-go verdict for Cabo Frio by email
Leave your email — and the moment a window opens at Cabo Frio, we'll send the go / no-go verdict. Email is all we need.
Optional: city, channel, phone
26 countries · all spots
Pick your coast
Every covered town has its own live forecast, cameras and entry points. Choose where you're diving.
Feedback
Help us make it better
What's missing? Tell us what you'd like to see — new spots, species, data or features. We read everything.
Spain