Is it worth the trip?
33Poor out of 100 for your dates
Best on Mon 9: 4 ft swell at 6 s
Wed 4 · 21 out of 100
- Swell
- 3 ft6 s
- Energy
- 64kJ
- Wind
- ENE 17 kn
- Temp
- 19°C
Thu 5 · 54 out of 100
- Swell
- 3 ft6 s
- Energy
- 69kJ
- Wind
- SE 6 kn
- Temp
- 18°C
Fri 6 · 21 out of 100
- Swell
- 2 ft5 s
- Energy
- 29kJ
- Wind
- NE 2 kn
- Temp
- 19°C
Sat 7 · 3 out of 100
- Swell
- 2 ft6 s
- Energy
- 16kJ
- Wind
- SSW 32 kn
- Temp
- 17°C
Sun 8 · 18 out of 100
- Swell
- 4 ft6 s
- Energy
- 133kJ
- Wind
- SSW 19 kn
- Temp
- 16°C
Mon 9 · 59 out of 100
- Swell
- 4 ft6 s
- Energy
- 112kJ
- Wind
- ESE 3 kn
- Temp
- 17°C
Tue 10 · 17 out of 100
- Swell
- 2 ft7 s
- Energy
- 37kJ
- Wind
- NE 16 kn
- Temp
- 19°C
Tap a day for waves, wind and the temperature. Full forecast
Forecast: next 9 days
Full forecast- Tue 317, too small
- Wed 421, poor
- Thu 554, fair
- Fri 621, too small
- Sat 73, too small
- Sun 818, poor
- Mon 959, fair
- Tue 1017, too small
- Wed 1130, too small
The spot in five facts
- Faces SEtakes swell from the SE
- Offshore: NWwind from the land
- Intermediate +who it suits
- Works 2–9 ftof swell
- Water 20 °C2 mm shorty
Full forecast
every day, every number
| Day | Score for intermediates | Swell | Energy | Wind | Temp |
|---|---|---|---|---|---|
| Tue 3Nov | 17, too small | 2 ft5 s3 ft at break (est.) | 29kJ | wind from the south-east, 6 knots | 19°C |
| Wed 4Nov | 21, poor | 3 ft6 s3 ft at break (est.) | 64kJ | wind from the east-north-east, 17 knots | 19°C |
| Thu 5Nov | 54, fair | 3 ft6 s4 ft at break (est.) | 69kJ | wind from the south-east, 6 knots | 18°C |
| Fri 6Nov | 21, too small | 2 ft5 s3 ft at break (est.) | 29kJ | wind from the north-east, 2 knots | 19°C |
| Sat 7Nov | 3, too small | 2 ft6 s2 ft at break (est.) | 16kJ | wind from the south-south-west, 32 knots | 17°C |
| Sun 8Nov | 18, poor | 4 ft6 s5 ft at break (est.) | 133kJ | wind from the south-south-west, 19 knots | 16°C |
| Mon 9Nov | 59, fair | 4 ft6 s5 ft at break (est.) | 112kJ | wind from the east-south-east, 3 knots | 17°C |
| Tue 10Nov | 17, too small | 2 ft7 s3 ft at break (est.) | 37kJ | wind from the north-east, 16 knots | 19°C |
| Wed 11Nov | 30, too small | 3 ft5 s2 ft at break (est.) | 29kJ | wind from the north-east, 10 knots | 19°C |
Energy is the swell's power, in kJ per metre of wave. Wind is in knots, the arrow where it blows to; green is offshore. More
Tide
- Tue 3 NovHigh 02:13 −0.0 mLow 05:59 −0.3 mHigh 14:38 +0.4 mLow 19:33 −0.1 mHigh 21:10 −0.1 m
- Wed 4 NovLow 00:00 −0.1 mHigh 02:59 −0.0 mLow 06:51 −0.3 mHigh 15:38 +0.4 mLow 20:04 −0.0 mHigh 21:58 +0.0 m
- Thu 5 NovLow 01:06 −0.1 mHigh 03:50 −0.0 mLow 07:43 −0.3 mHigh 16:43 +0.3 mLow 20:33 +0.0 mHigh 22:46 +0.1 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
No month stands out
Good days in a typical week, each month, for intermediate surfers, from 2016 on (history scored the same way).
- Jan1of 7: a trip from Sat 2 Jan
- Feb1of 7: a trip from Sat 6 Feb
- Mar1of 7: a trip from Sat 6 Mar
- Apr1of 7: a trip from Sat 3 Apr
- May1of 7: a trip from Sat 1 May
- Jun1of 7: a trip from Sat 5 Jun
- Jul1of 7: a trip from Sat 3 Jul
- Aug1of 7: a trip from Sat 7 Aug
- Sep1of 7: a trip from Sat 4 Sept
- Oct1of 7: a trip from Sat 2 Oct
- Nov1of 7: a trip from Wed 4 Nov
- Dec0of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast.
Map
the spot and its town
Tres Marias on Google Maps · Directions
Each place wears its best day on these dates, a surf spot for intermediates: green good, amber fair, pale red poor, as the key says.
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About
the place in full, sources, credits
About Tres Marias
Facing, offshore wind, exposure, level and swell range are estimated.
The spot faces SE (149°), so it takes swell from the SE. The wind blows offshore from the NW (329°). It is exposed to the open swell. It suits intermediate surfers and up. It works in 2–9 ft of swell. The sea is about 14°C in July, its coldest month (4/3 wetsuit and boots), and 25°C in February, its warmest (no wetsuit). No town nearby. Nearest beds: Rio Grande, 18 km (about 35 min by car). Nearest airport: João Simões Lopes Neto International Airport (PET), 58 km.
Water about 20°C: 2 mm shorty. Typical sea temperature for the time of year, not a forecast.
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$892–US$1,760 each
about US$892–US$1,760 each · 6 nights, 2 sharing: flights, hire car, food, board and wetsuit.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return ORD to PET, estimated from distance and season, changing at GRU, full-service airlines, with a hold bag | about US$590–US$1,230 |
| Hire car | 6 days, shared | about US$67–US$114 |
| Food | 7 days eating out | about US$161–US$295 |
| Board and wetsuit | 5 days, or about US$114 to fly your own | about US$74–US$121 |
| Total | about US$892–US$1,760 |
No town nearby, so no stay is in it. For 2 people sharing a room. Lessons, lift-pass deals and insurance are extra. Prices from public sources, checked in 2026.
Where to stay: nearest beds 18 km away
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
No town nearby
Nearest beds: Rio Grande, 18 km (about 35 min by car). Nearest airport: João Simões Lopes Neto International Airport (PET), 58 km.
See places to stay near Rio Grande, 18 km away · Booking.comGetting there: about 21h 25m
About 21h 25m door to door from Chicago
Fly ORD → PET, changing at São Paulo/Guarulhos–Governor André Franco Montoro International Airport (GRU), then 1h 20m by road
Flights ORD → PET on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.