East Sri Lanka · Right now

Arugam Bay

Updated Wed, Sep 23, 6:00 AM GMT+5:30

When to go

Around 6:04 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 10.9 kt

Tide Unavailable

Wave, wind and tide details

Offshore model swellSSE 2.7 ft @ 8sValid 2026-09-23 06:00 · 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 06:00 · Asia/Colombo

Model windSW 10.9 ktcross-shoreValid 2026-09-23 06:00 · Asia/Colombo6.0 kt onshore component

TideUnavailableunavailableNo verified local tide station connected; no tide height estimated

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
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

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

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 2/6 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 marine forecasts
No current response passed endpoint-field, issue, validity, next-issuance, regional wording, and unit validation.UnavailableNo source time
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.