CatchWindow · Time on the water

Baie de Grand-Case conditions

Weather, wind and available nearby ocean forecasts for Baie de Grand-Case. Model forecasts are separate from station observations.

Coordinates: 18.1038933, -63.0599246

Forecast sources and coverage

Times use America/Puerto_Rico. Weather: available; marine forecast: unavailable. Regional model values are separate from station observations.

Forecast for Port de Lonvilliers, 2.6 km from Baie de Grand-Case. Local conditions can differ.

Weather fetched 2026-11-08T05:17:31.567Z.

Complete hourly weather forecast

Weather model in America/Puerto_Rico
Time	Air °C	Wind km/h	Gust	Wind from °	Precipitation mm	Precipitation %	Pressure hPa
Nov 9, 12:00 a.m. AST	28.2	9.0	13.3 km/h	270.9	0.0	3.0	1014.5
Nov 9, 01:00 a.m. AST	28.2	9.0	13.0 km/h	265.0	0.0	1.0	1014.2
Nov 9, 02:00 a.m. AST	28.1	9.4	13.7 km/h	265.5	0.0	0.0	1013.5
Nov 9, 03:00 a.m. AST	27.9	9.0	13.7 km/h	272.9	0.0	0.0	1012.9
Nov 9, 04:00 a.m. AST	27.8	9.0	13.7 km/h	284.9	0.0	0.0	1013.0
Nov 9, 05:00 a.m. AST	27.8	7.9	13.0 km/h	294.9	0.0	0.0	1013.6
Nov 9, 06:00 a.m. AST	27.8	7.6	11.5 km/h	309.3	0.0	1.0	1014.4
Nov 9, 07:00 a.m. AST	27.8	6.8	10.4 km/h	320.2	0.0	1.0	1015.3
Nov 9, 08:00 a.m. AST	27.9	4.3	10.1 km/h	331.8	0.0	2.0	1016.4
Nov 9, 09:00 a.m. AST	28.0	2.9	7.9 km/h	71.5	0.0	2.0	1017.2
Nov 9, 10:00 a.m. AST	27.9	2.2	5.8 km/h	146.1	0.2	1.0	1017.7
Nov 9, 11:00 a.m. AST	27.5	2.5	8.3 km/h	242.5	0.2	2.0	1017.5
Nov 9, 12:00 p.m. AST	27.6	4.0	9.7 km/h	300.7	0.0	5.0	1016.9
Nov 9, 01:00 p.m. AST	27.7	3.6	8.6 km/h	311.0	0.0	8.0	1016.0
Nov 9, 02:00 p.m. AST	27.8	2.5	9.7 km/h	286.2	0.0	12.0	1015.5
Nov 9, 03:00 p.m. AST	27.9	2.2	9.0 km/h	291.5	0.0	17.0	1015.2
Nov 9, 04:00 p.m. AST	28.0	1.8	6.8 km/h	335.5	0.0	22.0	1015.3
Nov 9, 05:00 p.m. AST	28.1	2.5	6.5 km/h	358.1	0.0	24.0	1015.4
Nov 9, 06:00 p.m. AST	28.1	3.6	6.8 km/h	20.5	0.0	22.0	1015.6
Nov 9, 07:00 p.m. AST	28.2	5.0	7.6 km/h	58.7	0.0	17.0	1016.2
Nov 9, 08:00 p.m. AST	28.3	5.8	9.0 km/h	67.0	0.0	12.0	1016.8
Nov 9, 09:00 p.m. AST	28.4	6.1	10.1 km/h	70.7	0.0	7.0	1017.3
Nov 9, 10:00 p.m. AST	28.5	7.6	11.9 km/h	75.2	0.0	3.0	1017.4
Nov 9, 11:00 p.m. AST	28.4	8.6	13.3 km/h	84.3	0.0	0.0	1017.2
Nov 10, 12:00 a.m. AST	28.2	9.0	13.3 km/h	88.8	0.0	0.0	1017.0
Nov 10, 01:00 a.m. AST	28.1	9.0	13.3 km/h	91.6	0.0	2.0	1016.6
Nov 10, 02:00 a.m. AST	28.0	10.1	12.6 km/h	103.8	0.0	4.0	1015.9
Nov 10, 03:00 a.m. AST	27.9	11.5	15.1 km/h	113.7	0.0	5.0	1015.5
Nov 10, 04:00 a.m. AST	27.8	11.2	15.8 km/h	119.0	0.0	5.0	1015.7
Nov 10, 05:00 a.m. AST	27.8	9.0	15.5 km/h	120.3	0.0	6.0	1016.2
Nov 10, 06:00 a.m. AST	27.7	7.2	13.3 km/h	107.8	0.0	8.0	1016.7
Nov 10, 07:00 a.m. AST	27.8	6.1	11.9 km/h	93.4	0.0	9.0	1017.4
Nov 10, 08:00 a.m. AST	27.8	6.8	10.4 km/h	82.3	0.0	10.0	1018.0
Nov 10, 09:00 a.m. AST	27.9	8.3	11.9 km/h	96.1	0.0	8.0	1018.4
Nov 10, 10:00 a.m. AST	28.0	9.7	14.4 km/h	102.6	0.0	5.0	1018.6
Nov 10, 11:00 a.m. AST	27.9	9.4	14.8 km/h	102.8	0.0	2.0	1018.0
Nov 10, 12:00 p.m. AST	28.0	9.7	14.0 km/h	104.1	0.0	1.0	1017.4
Nov 10, 01:00 p.m. AST	28.0	9.7	14.0 km/h	111.6	0.0	1.0	1016.7
Nov 10, 02:00 p.m. AST	28.1	8.6	14.0 km/h	106.6	0.0	2.0	1016.1
Nov 10, 03:00 p.m. AST	28.2	8.1	13.0 km/h	96.0	0.0	3.0	1015.8
Nov 10, 04:00 p.m. AST	28.2	8.1	13.3 km/h	94.0	0.1	6.0	1016.2
Nov 10, 05:00 p.m. AST	28.2	9.5	14.4 km/h	89.0	0.0	8.0	1016.3
Nov 10, 06:00 p.m. AST	28.1	10.7	15.8 km/h	77.0	0.0	10.0	1016.5
Nov 10, 07:00 p.m. AST	28.1	12.7	18.0 km/h	69.0	0.1	13.0	1016.8
Nov 10, 08:00 p.m. AST	28.5	13.7	20.9 km/h	64.8	0.1	16.0	1017.2
Nov 10, 09:00 p.m. AST	27.8	16.3	22.7 km/h	79.0	0.1	21.0	1018.0
Nov 10, 10:00 p.m. AST	28.4	16.3	22.3 km/h	77.0	0.2	26.0	1017.9
Nov 10, 11:00 p.m. AST	28.2	17.8	23.8 km/h	82.0	0.1	29.0	1017.8

Shoreline adventures 2026-11-09

Coverage: available. Source: provider: NOAA; stationId: TEC4765; locationName: St. Barthelemy; distanceKm: 31.730855927644; datum: MLLW. Times use America/Puerto_Rico. These are forecast assessments, not beach access, harvesting permission or safe navigation boundaries.

Daylight shoreline outings

Weather assessments with separate tide coverage
Start	End	Score /10	Assessment	Wind min kn	Wind max kn	Gust	Rain mm	Tide coverage	Reasons
Nov 9, 10:00 a.m. AST	Nov 9, 12:00 p.m. AST	6.0	Good	1.2	1.4	4.5 kn	0.2	complete
Nov 9, 03:00 p.m. AST	Nov 9, 05:38 p.m. AST	8.0	Excellent	1.0	1.4	4.9 kn	0.0	complete

Shoreline tide predictions

Source high and low predictions; heights keep the source datum
Time	Tide	Height m
Nov 9, 06:24 a.m. AST	high	0.5
Nov 9, 10:58 p.m. AST	low	-0.0

Relative low-tide crossing windows

These geometric crossings of 70% of the source high tide are separate from the daylight outing assessments above.

Predicted relative water-level crossings
Start	End	Prediction coverage	Daylight coverage	Weather coverage
Nov 8, 11:51 a.m. AST	Nov 9, 03:28 a.m. AST	complete	none	partial
Nov 9, 12:22 p.m. AST	Nov 10, 04:10 a.m. AST	complete	available	complete

Shoreline adventures 2026-11-10

Daylight shoreline outings

Weather assessments with separate tide coverage
Start	End	Score /10	Assessment	Wind min kn	Wind max kn	Gust	Rain mm	Tide coverage	Reasons
Nov 10, 10:00 a.m. AST	Nov 10, 12:00 p.m. AST	6.0	Good	5.1	5.2	8.0 kn	0.0	complete
Nov 10, 03:00 p.m. AST	Nov 10, 05:38 p.m. AST	7.7	Good	4.4	5.2	7.8 kn	0.1	complete

Shoreline tide predictions

Source high and low predictions; heights keep the source datum
Time	Tide	Height m
Nov 10, 07:02 a.m. AST	high	0.5
Nov 10, 11:33 p.m. AST	low	-0.0

Relative low-tide crossing windows

These geometric crossings of 70% of the source high tide are separate from the daylight outing assessments above.

Predicted relative water-level crossings
Start	End	Prediction coverage	Daylight coverage	Weather coverage
Nov 9, 12:26 p.m. AST	Nov 10, 04:07 a.m. AST	complete	none	complete

Daily precipitation totals

Full local-day forecasts from Open-Meteo, including rain and snow water equivalent. Missing totals remain unavailable.

Daily precipitation in America/Puerto_Rico
Date	Precipitation mm
2026-11-09	1.0
2026-11-10	0.7