Arugam Bay
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Hourly Forecast
Timezone: Asia/Colombo
โฑ๏ธs.
โšก๏ธkJ
Tuesday 16
Wednesday 17
Thursday 18
Friday 19
Saturday 20
Sunday 21
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Arugam Bay surf guide

Arugam Bay, often just called A-Bay, is a well-known surf spot located on the eastern coast of Sri Lanka. It's been a part of the Indian Ocean surf trail for a while and has developed a laid-back vibe that's appealing to many surfers. The beach is lined with sand and some rocks, offering a chill atmosphere where surfers can enjoy the sun and waves. This spot can get pretty crowded, especially during the peak surf season from May to August, so be ready to share the waves with many other surfers.

The surf at Arugam Bay works best with southeast swells, but it can also catch some action from the southwest. It's ideal for waves in the 2 to 6 ft. (0.6 to 1.8 meters) range, and the rides are typically long, with right-handed point breaks that can go on for hundreds of meters. You might find some fun, playful sections that are more about flowing rides than heavy power, though there are also times when the waves can offer a bit of hollow action. This spot is more suited for intermediate surfers, as the line-up can be chaotic with drop-ins, snaking, and the occasional bad vibe.

The surf tends to be consistent, but do watch out for the afternoon southeast sea breeze, which can chop things up a bit. At low tide, it can get shallow and tricky over the old coral reef, so keep that in mind when you're out there. The preferred conditions usually align with low to mid tide and a west wind, giving you the best chance to enjoy the waves. There are a lot of local surfers in the area, and surf competitions are regularly held, making for an interesting atmosphere.

Surf reports and surf forecasts nearby Arugam Bay

Komari
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Pottuvil Point
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Pottuvil Beach
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Main Beach - Arugam Bay
Eastern Province, Sri Lanka
Beach break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Mambo's / Reform
Unknown Region, Unknown Country
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Arugam Bay
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Crocodile Rock
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Peanut Farm
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Panama Rights
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Okanda
Eastern Province, Sri Lanka
Point break
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
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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.

Forecast Cheat Sheet

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.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

Models and Updates

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
Good
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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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.

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