Tide times · Blackwaterfoot

High and low water for the next 7 days, with the effect of air pressure and wind. Heights in metres above chart datum.

Now

2.7 m

Rising · next high water 11:52, 3.52 m expected

━ tide + pressure ┅ with wind surge

Time		Tide	Pressure	Wind surge	Expected
Today
05:22	Low	1.07 m	–	–	1.07 m
11:52	High	3.20 m	+15 cm	+16 cm	3.52 m
17:22	Low	0.59 m	+9 cm	+13 cm	0.80 m
Wednesday 28 October
00:32	High	2.85 m	+4 cm	+17 cm	3.06 m
05:57	Low	0.31 m	+2 cm	+22 cm	0.55 m
12:52	High	3.02 m	−4 cm	+11 cm	3.08 m
18:02	Low	0.30 m	−8 cm	+6 cm	0.28 m
Thursday 29 October
01:32	High	2.94 m	−9 cm	+4 cm	2.89 m
06:27	Low	0.48 m	−9 cm	+6 cm	0.45 m
13:45	High	2.96 m	−10 cm	+5 cm	2.91 m
18:45	Low	0.54 m	−10 cm	+5 cm	0.49 m
Friday 30 October
02:07	High	3.10 m	−9 cm	+4 cm	3.04 m
07:17	Low	0.70 m	−4 cm	+8 cm	0.74 m
14:30	High	2.94 m	−9 cm	+9 cm	2.94 m
19:52	Low	0.48 m	−12 cm	+0 cm	0.36 m
Saturday 31 October
03:00	High	2.75 m	−14 cm	+0 cm	2.61 m
08:15	Low	0.77 m	−13 cm	+0 cm	0.64 m
15:15	High	2.73 m	−14 cm	+0 cm	2.59 m
21:00	Low	0.37 m	−14 cm	+0 cm	0.23 m
Sunday 1 November
04:00	High	2.47 m	−22 cm	+0 cm	2.25 m
09:30	Low	0.74 m	−26 cm	+0 cm	0.48 m
16:15	High	2.58 m	−27 cm	+0 cm	2.31 m
22:22	Low	0.39 m	−28 cm	+0 cm	0.11 m
Monday 2 November
05:22	High	2.38 m	−28 cm	+0 cm	2.10 m
10:45	Low	0.87 m	−28 cm	+0 cm	0.59 m
17:30	High	2.56 m	−25 cm	+0 cm	2.31 m
23:32	Low	0.38 m	−24 cm	+0 cm	0.14 m

How the heights are worked out

Tide is the astronomical prediction from the Open-Meteo sea-level model, calibrated against the CMAL Brodick pier gauge.
Pressure: water rises about 1 cm for every hPa that pressure falls below 1013 hPa, and drops when pressure is high. A deep 970 hPa low adds about 43 cm.
Wind surge is our estimate of south-westerly winds pushing water up the Firth of Clyde. It uses the mean wind over the 6 hours before each tide.
Expected is the sum of the three: the height most likely to actually be reached.

Not for navigation

Times may differ from official tables by 10–20 minutes, and surge is an estimate. Use UKHO / Admiralty tide tables for navigation. For coastal flooding, check SEPA flood updates.