East Sri Lanka · Today

Arugam Bay

Updated Wed, Sep 23, 5:10 AM GMT+5:30

When to go

Around 6:00 AM

Windy · Low confidence

3.6–3.6 ft · Offshore waves · not face height

Wind: 10.9 kt · cross-shore

Forecast details

This is the best time in the forecast, though wind may make it choppy.

Other wind windows

Plan around the wind

The best available upcoming daylight wind sample to compare with the wave evidence. This compares wind only; wave size, tide suitability, and hazards can change your choice.

7:00 AM–9:00 AM · Asia/Colombo
Strong wind · up to 13.8 kt · reported gusts up to 26.0 kt
Caution: This is the best available wind comparison, not a favorable-wind label. Strong wind remains in the selected evidence.
Offshore waves: 3.7–3.8 ft across the period. Surf height unavailable. Tide data unavailable.
Wind source time: Sep 23, 5:15 AM GMT+5:30. This is not the model run issue time.

How these periods are chosen

The planner prefers three consecutive hourly samples covering two daylight hours, but retains shorter one- or two-sample evidence when that is all the forecast provides. Light wind means at most 6 kt. Moderate offshore means at most 12 kt from land toward the sea when shore orientation is verified. Strong wind or known gusts of 20 kt or more remain visible as cautions instead of making the entire comparison disappear. These are comparison labels, not locally tested surf-quality or safety ratings. Missing gusts remain unknown. Terrain shelter, currents, closures, and your ability are not assessed.

Forecast confidence

Returned marine grid point is 6.6 km from the mapped spot. Provider grid resolution is not established for this response.
Reference model hour: 0 hours from now; historical residuals do not measure forecast lead-time error.
No accepted local model for these inputs: missing history, unsupported direction/period/height, or failed historical validation.
Tide unavailable: assessment incomplete, especially at shallow reef breaks.
A mapped coordinate does not establish nearshore grid resolution or terrain/shelter accuracy.

Wind SW 10.4 kt

Tide Unavailable

Wave, wind and tide details

Offshore model swellSSE 2.8 ft @ 8sValid 2026-09-23 05:00 · Asia/ColomboMarine grid 6.7917, 81.8750 · offshore model, not a local measurement

Offshore model sea3.6 ft @ 8.1sSignificant wave height including wind waves and swell; not breaking surfValid 2026-09-23 05:00 · Asia/Colombo

Model windSW 10.4 ktcross-shoreValid 2026-09-23 05:00 · Asia/Colombo5.3 kt onshore component

TideUnavailableunavailableNo verified local tide station connected; no tide height estimated

Sri Lanka Department of Meteorology · sea areas around the island

The depression located over the northwest Bay of Bengal, about 1000 km northeast of the island, is expected to further intensify into a deep depression within the next 12 hours. Due to its influence, wind and rainy condition over the Bay of Bengal will increase. Naval and fishing communities are warned not to venture to the sea areas in between 5°N and 22°N latitude and 85°E and 100°E longitude until further notice. Naval and fishing communities operating in those sea areas are advised to move away from the affected sea areas. Navel and fishing communities engaging the activities over this sea areas are advised to be vigilant and be attentive to the future forecasts and bulletins issued by the department of meteorology in this regards. Condition of Rain: Showers or thundershowers will occur at times in the sea areas off the coast extending from Kankasanthurai to Hambanthota via Puttalam, Colombo and Galle. Showers or thundershowers may occur at several places in the other sea areas during the evening or night. Winds: Winds will be South-westerly. Wind speed will be (30-40) kmph. Wind speed can increase up to (50-60) kmph at times in the sea areas off the coast extending from Trincomalee to Chilaw via Kankasanthurai and Mannar, and from Galle to Pottuvil via Hambantota. State of Sea: The sea areas off the coast extending from Trincomalee to Chilaw via Kankasanthurai and Mannar, and from Galle to Pottuvil via Hambantota will be rough at times. The wave height may increase about (2.0 – 2.5) meters in the sea areas off the coast extending from Puttalam to Pottuvil via Colombo, Galle and Matara. Temporarily strong gusty winds and very rough seas can be expected during thundershowers.

2026-09-22T14:00 through 2026-09-23T14:00 Asia/Colombo (2026-09-22T08:30:00.000Z through 2026-09-23T08:30:00.000Z)Official 24-hour regional marine-weather narrative in the provider's original kmph and named-coast wording; not a wave observation, coast-segment assignment, tide, or breaking-surf forecastIssued Sep 22, 2:00 PM GMT+5:30

Sri Lanka Department of Meteorology · shipping report for sea areas around Sri Lanka

The depression located over the northwest Bay of Bengal, lay centred at 0600 UTC of 22nd September, near latitude 17.9°N and longitude 85.8°E, about 1000 km northeast of the Sri Lanka, is expected to further intensify into a deep depression within the next 12 hours. Naval and fishing communities are warned not to venture to the sea areas bounded by 5°N to 22°N latitude and 85°E to 100°E longitude until further notice and those who are operating in these sea areas are advised to move away. Weather:- OCNL Showers / T'Showers over SW BOB, Basses, Southern part of SL West and Comorin. SCT Showers / T'Showers over Maldives and Southern part of Lakshadweep. ISOL Showers / T'Showers elsewhere. Winds:- Strong, OCNL very Strong SW'ly winds over SW BOB, Basses and Northern part of SL West. Strong W'ly to SW'ly winds over Southern part of SL West and Comorin. Fresh, OCNL Strong W'ly winds over Maldives and Southern part of Lakshadweep. Moderate, OCNL fresh NW'ly to W'ly winds over elsewhere. Seas:- Rough, very rough at times in SW BOB, Basses and Northern part of SL West. Fairly Rough, Rough at times in Southern part of SL West and Comorin. Moderate, fairly rough at times in Maldives and Southern part of Lakshadweep. Moderate elsewhere. NOTE: Seas can be temporarily very rough during thundershowers.

2026-09-22T20:30 through 2026-09-23T14:30 Asia/Colombo (2026-09-22T15:00:00.000Z through 2026-09-23T09:00:00.000Z); next issue 2026-09-23T08:30 Asia/Colombo (2026-09-23T03:00:00.000Z)Official regional shipping-weather narrative retaining the provider's named sea areas and qualitative sea states; not a spot or coast-segment forecast, wave observation, tide, or breaking-surf estimateIssued Sep 22, 4:30 PM GMT+5:30

Surf height unavailable. Coastal and offshore waves are not breaking-wave heights.

Surf and wind

Recommended window: No recommended window

Breaking surf is not reliably resolved. Hourly offshore swell and wind inputs are listed below.

Hourly forecast

Hourly surf forecast for Arugam Bay
Time	Wind	Tide	Offshore swell
12 AM	SW 12.1 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 9s
1 AM	SW 11.9 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 9s
2 AM	SW 11.4 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 9s
3 AM	SW 10.8 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 8s
4 AM	SW 10.7 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 8s
5 AM	SW 10.4 ktcross-shore	Unavailableunavailable	SSE 2.8 ft @ 8s
6 AM	SW 10.9 ktcross-shore	Unavailableunavailable	SSE 2.7 ft @ 8s
7 AM	SSW 11.4 ktcross-shore	Unavailableunavailable	SSE 2.7 ft @ 8s
8 AM	SW 12.6 ktcross-shore	Unavailableunavailable	SSE 2.6 ft @ 8s
9 AM	SW 13.8 ktcross-shore	Unavailableunavailable	SSE 2.6 ft @ 8s
10 AM	SW 13.3 ktcross-shore	Unavailableunavailable	SSE 2.6 ft @ 8s
11 AM	SW 14.3 ktcross-shore	Unavailableunavailable	SSE 2.5 ft @ 8s
Noon	SSW 13 ktcross-shore	Unavailableunavailable	SSE 2.4 ft @ 8s
1 PM	SW 15 ktcross-shore	Unavailableunavailable	SSE 2.3 ft @ 9s
2 PM	SW 14.4 ktcross-shore	Unavailableunavailable	SSE 2.2 ft @ 9s
3 PM	SW 13.9 ktcross-shore	Unavailableunavailable	SSE 2.1 ft @ 9s
4 PM	SSW 13.8 ktcross-shore	Unavailableunavailable	SSE 2.1 ft @ 9s
5 PM	SW 12.7 ktcross-shore	Unavailableunavailable	SSE 2.0 ft @ 9s
6 PM	SW 12.2 ktcross-shore	Unavailableunavailable	SSE 2.1 ft @ 8s
7 PM	SW 14.1 ktcross-shore	Unavailableunavailable	SSE 2.2 ft @ 8s
8 PM	SW 13.4 ktcross-shore	Unavailableunavailable	SSE 2.2 ft @ 7s
9 PM	SW 13.4 ktcross-shore	Unavailableunavailable	SSE 2.2 ft @ 7s
10 PM	SW 12.7 ktcross-shore	Unavailableunavailable	SSE 2.3 ft @ 7s
11 PM	SW 13.7 ktcross-shore	Unavailableunavailable	SSE 2.3 ft @ 7s

12 AMUnavailable

WindSW 12.1 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 9s

1 AMUnavailable

WindSW 11.9 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 9s

2 AMUnavailable

WindSW 11.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 9s

3 AMUnavailable

WindSW 10.8 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 8s

4 AMUnavailable

WindSW 10.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 8s

5 AMUnavailable

WindSW 10.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.8 ft @ 8s

6 AMUnavailable

WindSW 10.9 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.7 ft @ 8s

7 AMUnavailable

WindSSW 11.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.7 ft @ 8s

8 AMUnavailable

WindSW 12.6 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.6 ft @ 8s

9 AMUnavailable

WindSW 13.8 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.6 ft @ 8s

10 AMUnavailable

WindSW 13.3 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.6 ft @ 8s

11 AMUnavailable

WindSW 14.3 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.5 ft @ 8s

NoonUnavailable

WindSSW 13 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.4 ft @ 8s

1 PMUnavailable

WindSW 15 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.3 ft @ 9s

2 PMUnavailable

WindSW 14.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.2 ft @ 9s

3 PMUnavailable

WindSW 13.9 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.1 ft @ 9s

4 PMUnavailable

WindSSW 13.8 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.1 ft @ 9s

5 PMUnavailable

WindSW 12.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.0 ft @ 9s

6 PMUnavailable

WindSW 12.2 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.1 ft @ 8s

7 PMUnavailable

WindSW 14.1 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.2 ft @ 8s

8 PMUnavailable

WindSW 13.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.2 ft @ 7s

9 PMUnavailable

WindSW 13.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.2 ft @ 7s

10 PMUnavailable

WindSW 12.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.3 ft @ 7s

11 PMUnavailable

WindSW 13.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSE 2.3 ft @ 7s

Tide

Local tide station unavailable

Tide predictions are unavailable for this period.

About this spot

Model-grid forecast requested at the mapped coordinate; reef, headland, and nearshore transformations are unresolved. Point break.

Mapped spot coordinate: 6.84, 81.84.

Mainland · Coast not verified · Ocean-facing bearing 157.5° · Location provenance

Model request point: Arugam Bay (6.84, 81.84). Model output times describe valid conditions; the provider does not expose the model run issue time in this response.

Forecast sources

Data coverage 3/6 sources

Source availability is not forecast accuracy. Where an empirical model passes historical testing, its error and interval coverage are shown above. Source count cannot increase that confidence.

Coverage tier D · MODEL_FIRST_ASIA · spot-level model point

Sri Lanka Department of Meteorology · sea areas around the island
Sri Lanka Department of Meteorology · sea areas around the island; Official 24-hour regional marine-weather narrative in the provider's original kmph and named-coast wording; not a wave observation, coast-segment assignment, tide, or breaking-surf forecastCurrentSep 22, 2:00 PM GMT+5:30
The Buoy API
No current same-exposure Sri Lanka wave observation with verified station identity, coordinates, units, and timestamp is connected.UnavailableNo source time
WorldTides API
No tide station is assigned without a verified station identity, coordinate, datum, timezone, distance, and current prediction response.UnavailableNo source time
Open-Meteo Marine API
1 of 1 configured model points availableCurrentSep 23, 5:15 AM GMT+5:30
Open-Meteo Weather API
1 of 1 configured model points availableCurrentSep 23, 5:15 AM GMT+5:30
Copernicus Marine Global Ocean Waves
No independently authenticated Copernicus product, run, grid, and current response is connected; the official narrative and Open-Meteo remain separately labeled forecast evidence.UnavailableNo source time
Surf-Forecast public pages
Spot discovery and break-specific HTML fallbackNot applicableNo source time
Surfline public spot pages
Break-specific comparison, cams, and metadataNot applicableNo source time

How best guesses are made

Best guesses combine usable wave and wind evidence, with qualitative confidence and specific limitations. A missing tide or local surf-height model does not prevent useful guidance. Tide levels use the named station datum; their effect at this break remains uncertain. Wind direction is relative to the mapped beach orientation, without calibrated terrain or shelter effects. The comparison is a heuristic, not a measured quality rating.