Bali West and East Coasts · Thursday, Sep 24

Keramas

Updated Wed, Sep 23, 8:30 AM GMT+8

When to go

8:00 AM–10:00 AM

Looks good · Low confidence

3.1–3.1 ft · Offshore waves · not face height

Wind: 5.7 kt · direction unavailable

Forecast details

Light wind should keep the water smoother.

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/Makassar
Light wind · up to 4.0 kt · reported gusts up to 10.3 kt
Offshore waves: 3.1–3.1 ft across the period. Surf height unavailable. Tide data unavailable.
Wind source time: Sep 23, 7:45 AM GMT+8. 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 4.7 km from the mapped spot. Provider grid resolution is not established for this response.
Reference model hour: 23 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 E 1 kt

Tide Unavailable

Wave, wind and tide details

Offshore model swellSSW 2.9 ft @ 11sValid 2026-09-24 08:00 · Asia/MakassarMarine grid -8.6250, 115.3750 · offshore model, not a local measurement

Offshore model sea3.1 ft @ 11.1sSignificant wave height including wind waves and swell; not breaking surfValid 2026-09-24 08:00 · Asia/Makassar

Model windE 1 ktcross-shoreValid 2026-09-24 08:00 · Asia/Makassar0.6 kt onshore component

TideUnavailableunavailableNo verified local tide station connected; no tide height estimated

BMKG Perairan Selatan P. Bali9.8–9.8 ftBMKG offshore significant wave height; not breaking surfIssued Sep 22, 8:00 PM GMT+8

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 Keramas
Time	Wind	Tide	Offshore swell
12 AM	NNE 3.3 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
1 AM	NE 3.2 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
2 AM	NE 3.1 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
3 AM	NE 2.6 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
4 AM	NE 2.7 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
5 AM	NNE 2.3 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
6 AM	NNE 2.1 ktcross-shore	Unavailableunavailable	SSW 3.0 ft @ 11s
7 AM	NNE 1.8 ktoffshore	Unavailableunavailable	SSW 2.9 ft @ 11s
8 AM	E 1 ktcross-shore	Unavailableunavailable	SSW 2.9 ft @ 11s
9 AM	SSE 4 ktonshore	Unavailableunavailable	SSW 2.9 ft @ 10s
10 AM	SSE 5.7 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
11 AM	SSE 7.6 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
Noon	SE 9.4 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
1 PM	SE 10.5 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
2 PM	ESE 12 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
3 PM	ESE 11.7 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
4 PM	SE 9.2 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
5 PM	SSE 7.1 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
6 PM	S 4.5 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
7 PM	SSE 1.6 ktonshore	Unavailableunavailable	SSW 2.8 ft @ 10s
8 PM	ESE 1.4 ktcross-shore	Unavailableunavailable	SSW 2.7 ft @ 10s
9 PM	ENE 0.9 ktcross-shore	Unavailableunavailable	SSW 2.7 ft @ 10s
10 PM	NE 0.7 ktcross-shore	Unavailableunavailable	SSW 2.6 ft @ 10s
11 PM	NE 1.3 ktcross-shore	Unavailableunavailable	SSW 2.6 ft @ 10s

12 AMUnavailable

WindNNE 3.3 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

1 AMUnavailable

WindNE 3.2 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

2 AMUnavailable

WindNE 3.1 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

3 AMUnavailable

WindNE 2.6 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

4 AMUnavailable

WindNE 2.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

5 AMUnavailable

WindNNE 2.3 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

6 AMUnavailable

WindNNE 2.1 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 3.0 ft @ 11s

7 AMUnavailable

WindNNE 1.8 ktoffshoreTideUnavailableunavailableOffshore swellSSW 2.9 ft @ 11s

8 AMUnavailable

WindE 1 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 2.9 ft @ 11s

9 AMUnavailable

WindSSE 4 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.9 ft @ 10s

10 AMUnavailable

WindSSE 5.7 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

11 AMUnavailable

WindSSE 7.6 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

NoonUnavailable

WindSE 9.4 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

1 PMUnavailable

WindSE 10.5 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

2 PMUnavailable

WindESE 12 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

3 PMUnavailable

WindESE 11.7 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

4 PMUnavailable

WindSE 9.2 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

5 PMUnavailable

WindSSE 7.1 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

6 PMUnavailable

WindS 4.5 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

7 PMUnavailable

WindSSE 1.6 ktonshoreTideUnavailableunavailableOffshore swellSSW 2.8 ft @ 10s

8 PMUnavailable

WindESE 1.4 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 2.7 ft @ 10s

9 PMUnavailable

WindENE 0.9 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 2.7 ft @ 10s

10 PMUnavailable

WindNE 0.7 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 2.6 ft @ 10s

11 PMUnavailable

WindNE 1.3 ktcross-shoreTideUnavailableunavailableOffshore swellSSW 2.6 ft @ 10s

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. Reef break. Named-break coordinate and southeast-facing orientation reviewed; South Bali BMKG evidence remains explicitly regional offshore evidence.

Mapped spot coordinate: -8.6, 115.34.

Bali · southeast Bali coast · Ocean-facing bearing 157.5° · Location provenance

Model request point: Keramas (-8.6, 115.34). 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 C · INDONESIA · spot-level model point

BMKG Perairan Selatan P. Bali
BMKG Perairan Selatan P. Bali; BMKG offshore significant wave height; not breaking surfCurrentSep 22, 8:00 PM GMT+8
The Buoy API
Normalized nearest-buoy discovery and readings; market adapter or station mapping not connectedUnavailableNo source time
WorldTides API
Tide predictions and station lookup; market adapter or station mapping not connectedUnavailableNo source time
Open-Meteo Marine API
1 of 1 configured model points availableCurrentSep 23, 7:45 AM GMT+8
Open-Meteo Weather API
1 of 1 configured model points availableCurrentSep 23, 7:45 AM GMT+8
Copernicus Marine Global Ocean Waves
Independent wave-model backend and cross-check; market adapter or station mapping not connectedUnavailableNo 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.