Loading The Highest Tides Ahead…
The biggest predicted high tides over the next six weeks — the dates worth noting in advance. For whether wind and surge are piling water on top of one this week, see High Water Watch.
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Mahone Bay sits low against the harbour, and the waterfront floods when a high tide meets a storm surge — as it did during post-tropical storm Lee in September 2023, when water rose about 1.5 m over the normal high tide and reached Main Street. This page lists the highest predicted high tides in the weeks ahead, from the Canadian Hydrographic Service's Mahone Harbour tide predictions, so you know which days to keep an eye on. On a calm day the tide alone rarely reaches the street; it is wind, rain and storm surge piling on top of one of these high tides that push the water over. This is not a flood warning — for that, follow the official channel below.
Next big tide
2.12 m, Fri, Sep 11 at 9:19 p.m.
| Date | High tide | Predicted height | |
|---|---|---|---|
| Fri, Sep 11 | 9:19 p.m. | 2.12 m | |
| Sat, Sep 12 | 9:41 a.m. | 2.15 m | |
| Sun, Sep 13 | 10:22 a.m. | 2.13 m | |
| Mon, Sep 28 | 9:44 a.m. | 2.13 m | |
| Tue, Sep 29 | 10:27 a.m. | 2.15 m | |
| Sat, Oct 10 | 8:32 a.m. | 2.14 m | |
| Sun, Oct 11 | 9:11 a.m. | 2.16 m | king tide |
| Mon, Oct 12 | 9:51 a.m. | 2.12 m |
Main Street and the Edgewater Street waterfront
The low ground along the harbour is the first to flood when a high tide meets a storm surge. Post-tropical storm Lee (16 September 2023) pushed water about 1.5 m over the normal high tide and flooded properties along Main Street. Residents say a southeast wind is the worst case, because it drives the water straight into the head of the bay.
In front of the three churches (Edgewater Street)
The Town built a living shoreline here in 2022 to soften storm-surge flooding on the stretch of Edgewater Street most exposed to a high tide riding on a surge. It is an adaptation, not a wall — the water can still come up on the biggest tides and storms.
These are official astronomical tide predictions, in m above chart datum. They tell you how high the water would rise on the tide alone, on a calm day.
Whether water actually reaches the street depends on wind, rain and storm surge on top of the tide. This is not a flood forecast. For warnings, follow the channel below.
Official warnings
Environment and Climate Change Canada — Coastal Flooding, Lunenburg County
ECCC issues the official Coastal Flooding Warnings and Statements for this coast; a high tide on this page is not a warning. Also watch Lunenburg County REMO (lunenburgremo.ca) and local radio — CKBW 98.1 FM and Country 100.7 FM — and note that national Alert Ready messages reach your phone, TV and radio on their own. In any flooding emergency, call 911.
weather.gc.ca/warnings/report_coastal_flooding_e.html?mesoCode=cf80
These predictions are for the Canadian Hydrographic Service's Mahone Harbour station, right in the town at the head of the bay, so they read the water at Mahone Bay itself. Heights are in metres above chart datum — the low-water level the nautical charts are drawn from — not the depth of water on any street.
Predictions: Canadian Hydrographic Service (CHS) tides.gc.ca. Station: Mahone Harbour — Station tide tables. as of August 23 at 10:49 p.m..
Source: Tide predictions: Canadian Hydrographic Service (Mahone Harbour). Flood history: Town of Mahone Bay & CBC., checked July 1, 2026 (last month).
Next big tide
2.12 m on Fri, Sep 11