Tiavea Bay
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Hourly
Timezone: Pacific/Apia
โฑ๏ธs.
โšก๏ธkJ
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Tiavea Bay surf guide

Tiavea Bay is nestled along the north coast of Upolu and is accessible through a long, scenic drive in the Uafato Conservation Area. The bay features several surf spots that attract surfers looking for a change from the more crowded southern beaches. While it may not boast world-class waves, it offers a variety of breaks that can be enjoyable, especially when the conditions align. The lush surroundings of the bay add to its charm, making it a decent place to hang out and catch some waves.

The main break at Tiavea Bay is the rivermouth that provides fun peaks and hollow sections. It's best surfed during mid-tide, handling swell sizes from around 0.6 meters to 3.6 meters (2ft to 12ft). Surfers can find both left and right waves here, but the left can be a bit fickle. There's also a powerful right peak further east that can bring some excitement when itโ€™s on. Although the cobblestone rivermouth is the most popular spot, the breaks here require optimal conditions, especially with S-SW winds, to really shine. It's mainly suited for intermediate surfers and is a good option for those on shortboards.

Access to the beach is straightforward with a drive right up to it, and the crowd factor is practically non-existent, so you can enjoy the waves without much hassle. Hazards include the reef, which can catch you off guard, so be mindful while paddling around. The best time to surf here is from November to February when the swell from the north is at its peak. Overall, Tiavea Bay offers a nice alternative for surfers looking to explore something different.

Surf reports and surf forecasts nearby Tiavea Bay

Tiavea Bay
Atua, Samoa
Rivermouth break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Luatuanuu
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Aufaga Village
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Laulii
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Salani Left
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Salani Right
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Tafatafa
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Nu'usafee Island
Atua, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Boulders
Upolu, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Siumu
Upolu, Samoa
Reef break
Wed 22
Thu 23
Fri 24
Sat 25
Sun 26
Mon 27
Tue 28
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
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Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

  • High certainty: Models agree closely; forecast is reliable.
  • Medium certainty: Some disagreement; conditions may shift slightly.
  • Low certainty: Models diverge; treat forecast with caution.

We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

Readme

Welcome! If youโ€™re new to surf forecasting, check out this quick guide.

Forecast Table

The forecast table (the section on the page with all the numbers) is designed to pack as much information in the screen as possible. Although intimidating at first, it will help you make informed decisions about the waves faster, trust me :D. The table consists of roughly four sections, time and predictions, wind, waves, and tides:

๐Ÿ”ฎ Time and predictions section

Here we show the forecast thour and the overall surf quality prediction. This is determined based on the wave, wind and tide quality prediction. These individual predictions can be found on the forecast map.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ Wave section

The waves section consists of three rows, one for wave height and direction, one for period and one for wave energy. Our algorithm choices the "dominant wave". This is normally the first swell partition, but with heavy local storms it displays the wind waves. If that's the case, we display the numbers in italic and in gray.

๐ŸŒ’ Tide section

The tide section consists of a row with the actual heights per hour (measured at the half hour) and a table that displays the flow of the tide and the extremes (lows and highs).

Forecast map

The forecast map consists of arrows. These arrows represent all wave partitions (swell partitions and wind wave partition) and the wind. This allows you to see things like: a secondary swell or wind waves messes up the surf, or the wind is just a tick offshore so very surfable. Click a metric label in the bottom left to bring that arrow to the front โ€” handy when arrows overlap.

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Short on time? Focus on wave energy. Itโ€™s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

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Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Hereโ€™s the scale:

Perfect
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Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

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