Grand Bé tidal island tide times: when to go
The causeway to Chateaubriand's tomb opens at low tide. On spring tides the sea rises very fast.
Short answer: On 2 Nov 2026, the best daylight low-tide window at Grand Bé tidal island is 07:25 to 08:30 local time. The biggest tides of the next 12 months fall on 22 Feb 2027, 23 Mar 2027, 2 Sep 2027, 1 Oct 2027.
Mon 2 November 2026
Go at low tide: 07:25 to 08:30
Low tide at 06:00 · Average tidal range
| Low tide | 06:00 | -2.4 m vs. mean sea level |
|---|---|---|
| High tide | 11:51 | +2.8 m vs. mean sea level |
| Low tide | 18:50 | -2.7 m vs. mean sea level |
Sunrise 07:58 · Sunset 17:48 · Shaded bands: low-tide windows; grey: dark
Next 7 days
| Day | Low tide | High tide | Daylight window | Range |
|---|---|---|---|---|
| Mon 2 Nov | 06:00, 18:50 | 11:51 | 07:25–08:30 | Mid |
| Tue 3 Nov | 07:30, 20:22 | 00:45, 13:18 | 07:26–10:00 | Neap |
| Wed 4 Nov | 09:00, 21:38 | 02:08, 14:34 | 07:28–11:30 | Mid |
| Thu 5 Nov | 10:08, 22:36 | 03:13, 15:35 | 07:38–12:38 | Mid |
| Fri 6 Nov | 11:01, 23:24 | 04:06, 16:26 | 08:31–13:31 | Mid |
| Sat 7 Nov | 11:47 | 04:52, 17:11 | 09:17–14:17 | Spring |
| Sun 8 Nov | 00:07, 12:28 | 05:34, 17:53 | 09:58–14:58 | Spring |
Biggest tides in the next 12 months
Spring tides expose the most sea floor at low water and bring the highest high water.
| Date | Range | Low tide | High tide |
|---|---|---|---|
| Sun 24 Jan 2027 | 11.6 m | 02:17, 14:40 | 07:47, 20:13 |
| Mon 22 Feb 2027 | 12.3 m | 01:58, 14:20 | 07:30, 19:53 |
| Tue 23 Mar 2027 | 12.3 m | 01:35, 13:55 | 07:06, 19:26 |
| Wed 21 Apr 2027 | 11.4 m | 02:11, 14:30 | 07:39, 19:59 |
| Wed 4 Aug 2027 | 11.9 m | 03:18, 15:35 | 08:50, 21:07 |
| Thu 2 Sep 2027 | 12.5 m | 02:57, 15:14 | 08:29, 20:46 |
| Fri 1 Oct 2027 | 12.3 m | 02:33, 14:52 | 08:04, 20:22 |
| Sat 30 Oct 2027 | 11.4 m | 02:10, 14:31 | 07:37, 19:58 |
Tours
Grand Bé tidal island tide times by month
Where these tide times come from
We fit 18 tidal constituents to modelled hourly sea level for the nearest open-sea grid point (48.79, -2.04), then predict any date with astronomical arguments and nodal corrections. In a held-out week our high and low water times differed from the model forecast by a median of 4 minutes.
Local harbours, river flow, wind and air pressure shift real tides by tens of minutes and heights by tens of centimetres. For causeways and sea-floor walks, always follow the official safe crossing times posted on site.
Times are local (Europe/Paris). Heights are relative to mean sea level, not chart datum. Source data: Open-Meteo Marine API.
Questions
When is the best time to visit Grand Bé tidal island?
The causeway to Chateaubriand's tomb opens at low tide. On spring tides the sea rises very fast. Pick a day when that window falls in daylight; the table above shows the next 7 days.
What time is low tide at Grand Bé tidal island today?
On 2 Nov 2026, low tide at Grand Bé tidal island is at 06:00 and 18:50 local time (predicted).
When are the biggest tides at Grand Bé tidal island?
Spring tides come one to two days after full and new moon. The largest in the next 12 months are on 22 Feb 2027, 23 Mar 2027, 2 Sep 2027, 1 Oct 2027.