Tidal PredictionsNova Scotia is renowned for having the highest tides in the world. In the Bay of Fundy the tidal range can exceed 50 feet (15 metres). However, around the Cape Breton coast the tidal range is less than 5 feet.
• Tide and Current TablesDownload and print or save Tide and Current Tables.
- Tide & Current Tables (2019) 2019 Tide tables for North Sydney, Point Tupper, Margaree Breakwater and current tables for Great Bras d'Or Narrowsⓘ Cape Breton Tide Tables
- Tide Tables for all of Canada (2019)
- Current Tables for all of Canada (2019)
Meteorological conditions can cause differences (time and height) between the predicted and the observed tides. These differences are mainly the result of atmospheric pressure changes, strong prolonged winds, and variations of freshwater discharge.
• JTides Tidal Prediction Program
We are indebted to Paul Lutus for this free, excellent, easy–to–use, world–wide, tidal prediction program. It's available on this website and the app. It runs on MS‑Windows, Apple Mac, Linux, and other operating systems that have Java Runtime Environment installed.
NOTE: Times are given in DAYLIGHT Time, when in effect.
For more information visit JTides Home Page.
NOTE: Mac, Linux, and other non-Windows OS users will need to download the JTides.jar file, which can also be used by Windows users.
On clicking the links below, you will be asked, "Would you like to save this file?" [JTides.exe or JTides.jar]. Click 'Save File'. The file will normally be downloaded to your 'Downloads' directory.
JTides.exe (1.3 MB) or JTides.jar (1.2 MB) [Version 5.3, build 368 (2016-11-18)]
For JTides.exe, locate the file and double-click on it to run it. Follow the instructions. This operation will install the program on your computer. Once installed simply double-click on the JTides.jar file where you installed it—better still, create a short-cut to it for use on your computer's desktop.
• "Tides" & Currents on the Lakes
Because the Lakes are vast (450 sq-miles) and the entrances to them narrow, the twice-daily tides which affect our coastal waters have little effect on the water levels on the lake. However, strong prolonged winds, extended periods of high or low pressure, and heavy rains will affect the water level significantly. Expect variations in water level of up to a foot (30 cm).
Strong currents will be experienced in the Great Bras d'Or Narrows and the Little Bras d'Or inlet. These currents are predictable and published in the Tide Tables. However, for the reasons noted above, the time of slack water in the narrows may occur earlier or later than predicted by half-an-hour or more, and this should be borne in mind when timing a passage through these channels, especially for slower craft.
Grand Narrows and Little Narrows are also subject to significant currents. The Lakes are a major drainage basin, so there is a net flow of water towards the sea. Also, there are "ebb and flood" currents, but there seems to be no predicting these as they are mainly due to fluctuations in water levels which have little relation to the ocean tides. Caution is advised when passing the bridges at Grand Narrows as the navigation channel is narrow and subject to eddies. The only hazard at Little Narrows is the ferry: caution is needed to avoid being swept into it while awaiting passage.Edited: 2018-11-04