SS Carmarthen scuba diving weather

Boat dive · Falmouth, Cornwall · Show on map

Now · 15:00Good

65out of 100

Good conditions. Steady until sunset.

Waves: 1.1 m
Wind: 11 kn from SSE; gusts 19
Water: 14 °C; same down to ~56 m
Suit: 7 mm + hood; whole dive

Tide High ~19:42 · Low ~02:08 · Bigger tides · approximate

Hour by hour today

Tap an hour to see it above

Score	Waves	Wind (gusts)	Current	Swell	Tide	Water	Air	Rain	Limited by
65	1.1 m	11 (19 kn) ↓	0.1 kn	0.8 m · 9 s ↓	↑ rising	14.3 °C	10 °C	–	surge
69	1.1 m	10 (18 kn) ↓	0.3 kn	0.8 m · 9 s ↓	↑ rising	14.3 °C	10 °C	–	waves
71	1.1 m	9 (16 kn) ↓	0.5 kn	0.8 m · 9 s ↓	↑ rising	14.3 °C	9 °C	–	surge
74	1.1 m	9 (15 kn) ↓	0.5 kn	0.8 m · 9 s ↓	↑ rising	14.3 °C	9 °C	–	waves
74	1.1 m	9 (16 kn) ↓	0.7 kn	0.7 m · 9 s ↓	High ~19:42	14.3 °C	9 °C	–	waves
74	1.1 m	9 (16 kn) ↓	0.5 kn	0.7 m · 9 s ↓	↓ falling	14.3 °C	9 °C	–	waves
74	1.1 m	10 (17 kn) ↓	0.2 kn	0.7 m · 9 s ↓	↓ falling	14.3 °C	10 °C	–	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. Tide times come from an ocean model: usually within about half an hour, more in complex waters. Check official tide tables.

Water at depth

15 °C down to about 56 m. No thermocline above that.

Suit: 7 mm with hood, or drysuit for the whole dive.

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

Temperature profile and next days

Day	Surface	Warm to
Sat 14 Nov	14.5 °C	~56 m
Sun 15 Nov	14.4 °C	~56 m
Mon 16 Nov	14.5 °C	~56 m
Tue 17 Nov	14.3 °C	~56 m
Wed 18 Nov	14.1 °C	~56 m
Thu 19 Nov	13.9 °C	~56 m
Fri 20 Nov	14.2 °C	~56 m
Sat 21 Nov	14.1 °C	~56 m
Sun 22 Nov	14.0 °C	~56 m
Mon 23 Nov	13.8 °C	~56 m

~9 km model grid; nearest model water 1.2 km away. Daily averages; the thermocline can move several metres day to day.

Conditions at SS Carmarthen

SS Carmarthen is open to the sea from the E–SW, so waves build there when the wind blows from those directions. Land shelters it from the WNW–ENE.

Over the next 7 days it's good or better on Sat and a no-go on Mon and Wed (surge and waves). Thu and Fri are only a trend so far.

The water is 14 °C at the surface and stays warm past 56 m, so a 7 mm with hood, or drysuit suits most dives.

Shelter

Open to E–SW. Waves and swell from there reach the site.

Sheltered from WNW–ENE: land blocks the waves.

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

Location

Open SS Carmarthen on the map50.0024, -5.1271

Nearby dive sites

Scores are today's best daylight hour.

About this forecast

Updated Sat 14 Nov, 15:30 · weather run 06Z 14 Nov · waves run 00Z 14 Nov

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

Tides come from a coarse ocean model. The range, and whether tides are bigger or smaller this week, are about right. Times are usually within about half an hour, but complex tides (the Solent, Portland, narrow straits) are poor. Slack water isn't in the score yet: plan with official tide tables and local advice.

Water temperature in Cornwall

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