Surf forecast · Brazil · Rio de Janeiro
Surf forecast Itacoatiara (Niterói) today
Waves, swell and wind at Itacoatiara (Niterói) (Rio de Janeiro, Brazil) today and for the next 3 days, every 3 hours of daylight, with a plain verdict per day — flat, small, fun, good or big, offshore or onshore — and the best window to paddle out.
These numbers are more than 7 hours old, so they are hidden. Open the live waves map for the current sea. Open the waves map centred on Itacoatiara (Niterói)
Right now
Fun light wind.
Itacoatiara (Niterói) surf forecast, next 3 days
- Flat
- Small
- Fun
- Good
- Big
Saturday 24 October
Fun Best window 16:00–18:00: fun, light wind.
Sunday 25 October
Fun Best window 05:00–08:00: fun, offshore.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 0.9 m · 8 s ↑SE | 0.6 m · 7 s ↑SSE | 10–19 km/h ↑NNW offshore |
| 09:00 | 0.8 m · 7 s ↑SE | 0.6 m · 7 s ↑SSE | 5–23 km/h ↑NE light wind |
| 12:00 | 0.8 m · 7 s ↑SE | 0.5 m · 7 s ↑SSE | 10–31 km/h ↑SW onshore |
| 15:00 | 0.8 m · 7 s ↑SSE | 0.5 m · 5 s ↑E | 12–31 km/h ↑S onshore |
Monday 26 October
Fun Best window 05:00–08:00: fun, cross-shore.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 1.3 m · 6 s ↑SW | 0.4 m · 10 s ↑S | 21–40 km/h ↑SW cross-shore |
| 09:00 | 1.6 m · 6 s ↑SW | 0.7 m · 5 s ↑S | 22–43 km/h ↑SW cross-shore |
| 12:00 | 1.8 m · 6 s ↑SW | 0.5 m · 7 s ↑S | 24–54 km/h ↑SW cross-shore |
| 15:00 | 2.0 m · 6 s ↑SW | 0.5 m · 6 s ↑W | 25–53 km/h ↑SW onshore |
Tuesday 27 October
Good Best window 07:00–10:00: good, light wind.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 2.1 m · 8 s ↑S | 2.0 m · 7 s ↑S | 3–4 km/h ↑NW light wind |
| 09:00 | 2.0 m · 9 s ↑S | 2.0 m · 7 s ↑S | 7–21 km/h ↑SSE light wind |
| 12:00 | 2.0 m · 9 s ↑S | 1.9 m · 7 s ↑S | 12–31 km/h ↑SSE onshore |
| 15:00 | 1.9 m · 9 s ↑S | 1.9 m · 7 s ↑S | 13–35 km/h ↑SE onshore |
Every 3 hours of daylight, local time. Waves = significant height of the whole sea, with the peak period; swell = the long-period part. Arrows point where the waves and the wind are going.
Forecast for Sat 16:00 local time · updated 2026-10-24 19:11 UTC
Waves map around Itacoatiara (Niterói)
Open the waves map centred on Itacoatiara (Niterói)
Live significant wave height from NOAA WaveWatch III, averaged over 2° cells: coarser than the forecast above, so near the coast it can differ from it.
More about Itacoatiara (Niterói)
Water temperature in Rio de Janeiro · Tides in Rio de Janeiro · Swell map · Wind map
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Questions
- Is there surf at Itacoatiara (Niterói) today?
- Fun: waves 1.1 m at 8 s from SE, swell 0.8 m · 7 s SSE (Sat 16:00).
- Is the wind offshore at Itacoatiara (Niterói)?
- Wind 7 km/h from SE: light wind for a beach facing S.
- When is the best time to surf Itacoatiara (Niterói) today?
- 16:00–18:00 (fun, light wind)
- How warm is the water at Itacoatiara (Niterói)?
- 25.4 °C
- Where do the numbers come from?
- The Open-Meteo Marine API (wave models of Météo-France, ECMWF and NOAA) for a point just off the beach, and the Open-Meteo forecast for the wind. A model at sea, not a surf report: sandbanks, reefs and tide shape the waves you actually get.
Nearby surf spots
Arpoador 16 km · Barra da Tijuca 34 km · Prainha 50 km · Saquarema (Itaúna) 56 km · Itamambuca (Ubatuba) 208 km · Maresias 273 km
How it is computed
Hourly Open-Meteo Marine forecast (wave height, peak period and direction, swell) at a point just off Itacoatiara (Niterói), and the Open-Meteo wind at 10 m. Size: flat under 0.3 m, small under 0.8 m, fun under 1.5 m, good under 2.5 m (with a period of 8 s or more), big above. Wind: under 8 km/h light; otherwise offshore, cross-shore or onshore from its angle to the direction the beach faces. The best window is the 3 daylight hours with the best mix of size, period and wind. Rebuilt every 3 hours. Live map.