High and low water at Calf Sound, Wednesday 14 October to Tuesday 20 October. Isle of Man time; heights in metres above chart datum.
Date
High water
Low water
Springs / neaps
Wed 14 OctTodaySprings91%
5.9 m5.8 m
1.2 m1.3 m
Springs91%
Thu 15 OctToday81%
5.6 m5.6 m
1.5 m1.5 m
81%
Fri 16 OctToday69%
5.2 m5.3 m
1.8 m1.8 m
69%
Sat 17 OctTodayNeaps57%
4.8 m5.0 m
2.2 m2.1 m
Neaps57%
Sun 18 OctFirst quarterTodayNeaps45%
4.5 m4.7 m
2.5 m2.3 m
Neaps45%
Mon 19 OctTodayNeaps38%
4.2 m4.5 m
2.7 m
Neaps38%
Tue 20 OctTodayNeaps41%
4.2 m4.6 m
2.4 m2.7 m
Neaps41%
Local secondary port on Port Erin, differences fitted to official UKHO-derived times; typical agreement about 4 min and 0.05 m. Springs and neaps go by the day's largest tidal range at Liverpool as a percentage of mean springs: springs at 90% or more, neaps at 65% or less. The moon marks new, first quarter, full and last quarter.
Not for navigation. Heights are astronomical predictions only; weather and surge are not included. Check Admiralty tables and local harbour information before going afloat.
Sources: Harmonic constants TICON-4 (Hart-Davis et al. 2025, CC BY 4.0) via the Neaps tide database; Douglas, Ramsey, Peel, Port St Mary and Calf Sound worked from Port Erin with differences fitted to UK Hydrographic Office-derived predictions. Times shown in Isle of Man time.
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