ScubaForecast

Ledges of Little St James scuba diving weather

Boat dive · St. John, US Virgin Islands · Show on map

Now · 11:00Fair

59out of 100

Good conditions. Steady until sunset.

Waves
1.2 m
Wind
18 kn from SE
gusts 23
Water
30 °C
same down to ~29 m
Suit
Rash guard
to ~29 m

Hour by hour today

Tap an hour to see it above

TimeScoreWavesWind (gusts)CurrentSwellLimited by
591.2 m18 (23 kn) ↓0.4 kn0.2 m · 5 s ↓waves
621.2 m18 (23 kn) ↓0.4 kn0.3 m · 5 s ↓waves
671.1 m17 (23 kn) ↓0.4 kn0.3 m · 5 s ↓waves
731.0 m17 (22 kn) ↓0.4 kn0.3 m · 5 s ↓wind
701.1 m16 (22 kn) ↓0.4 kn0.3 m · 5 s ↓waves
651.2 m16 (21 kn) ↓0.4 kn0.2 m · 5 s ↓waves
621.3 m15 (21 kn) ↓0.4 kn0.2 m · 5 s ↓waves
681.2 m16 (20 kn) ↓0.4 kn0.3 m · 5 s ↓waves
711.1 m16 (21 kn) ↓0.3 kn0.3 m · 5 s ↓waves
391.4 m16 (21 kn) ↓0.3 kn1.1 m · 5 s ↓waves
421.4 m15 (21 kn) ↓0.2 kn1.1 m · 5 s ↓waves

Waves and swell are adjusted for this site's shelter from the coastline. Arrows point where the wind and swell go. Night hours are shaded.

Water at depth

30 °C down to about 29 m. The model's water ends there; nothing is known below.

Suit: Rash guard or 1–2 mm down to ~29 m.

Model estimate (Copernicus Marine), updated Sat 14 Nov. High confidence.

Temperature profile and next daysEstimated water temperature from the surface down to 60 metres today. Surface 29.5 °C, warm layer to about 29 metres.0 m10 m20 m30 m40 m50 m60 m28°30°0.5 m: 29.5 °C1.5 m: 29.5 °C2.6 m: 29.5 °C3.8 m: 29.5 °C5.1 m: 29.5 °C6.4 m: 29.5 °C7.9 m: 29.5 °C9.6 m: 29.5 °C11.4 m: 29.5 °C13.5 m: 29.5 °C15.8 m: 29.5 °C18.5 m: 29.5 °C21.6 m: 29.5 °C25.2 m: 29.6 °C29.4 m: 29.7 °C
DaySurfaceWarm to
Sat 14 Nov29.5 °C~29 m
Sun 15 Nov29.5 °C~29 m
Mon 16 Nov29.5 °C~29 m
Tue 17 Nov29.4 °C~29 m
Wed 18 Nov29.4 °C~29 m
Thu 19 Nov29.3 °C~29 m
Fri 20 Nov29.4 °C~29 m
Sat 21 Nov29.5 °C~29 m
Sun 22 Nov29.5 °C~29 m
Mon 23 Nov29.4 °C~29 m

~9 km model grid; nearest model water 4.5 km away, so channels and bays may differ. Daily averages; the thermocline can move several metres day to day.

Conditions at Ledges of Little St James

Ledges of Little St James is open to the sea from the SE–W, so waves build there when the wind blows from those directions. Land shelters it from the E–ESE, NW–NNE.

Over the next 7 days it's good or better every day. Wed, Thu and Fri are only a trend so far.

The water is 30 °C at the surface and stays warm past 29 m, so a rash guard or 1–2 mm suits most dives.

Shelter

Open water in each direction from the site. Longer petals mean more open sea, so more exposure to wind waves and swell from that direction.N: 0.7 km of open waterNNE: 0.8 km of open waterNE: 4.8 km of open waterENE: 4.5 km of open waterE: 0.3 km of open waterESE: 0.3 km of open waterSE: open sea (over 200 km)SSE: 65.2 km of open waterS: 59.5 km of open waterSSW: open sea (over 200 km)SW: open sea (over 200 km)WSW: open sea (over 200 km)W: 45.0 km of open waterWNW: 4.6 km of open waterNW: 2.1 km of open waterNNW: 0.7 km of open waterNESW

Open to SE–W. Waves and swell from there reach the site.

Sheltered from E–ESE, NW–NNE: land blocks the waves.

Computed from the OpenStreetMap coastline. Wind itself is not reduced by shelter.

Location

Open Ledges of Little St James on the map18.3004, -64.8303

Nearby dive sites

Scores are today's best daylight hour.

About this forecast

Updated Sat 14 Nov, 11:30 · weather run 06Z 14 Nov · waves run 00Z 14 Nov

Waves are adjusted for this site's shelter from the coastline.

Water temperature in US Virgin Islands

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