Today, Monday, October 26, 2026, the tide coefficient is 100: spring tides. By Brest high water: 97 at 04:36 and 100 at 16:55 (Paris time). The next spring tides run from October 27 to October 30.
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October 2026
Coefficient for each day, with the moon phases
Coefficient day by day
| Day | Coefficient | By Brest high water (Paris time) | Moon |
|---|---|---|---|
| Thu 1 | 82 | 08:33: 82 · 20:56: 75 | Waning gibbous |
| Fri 2 | 68 | 09:20: 68 · 21:47: 60 | Last quarter |
| Sat 3 | 53 | 10:19: 53 · 22:57: 47 | Last quarter |
| Sun 4 | 42 | 11:43: 42 | Last quarter |
| Mon 5 | 43 | 00:34: 41 · 13:24: 43 | Waning crescent |
| Tue 6 | 55 | 02:09: 48 · 14:46: 55 | Waning crescent |
| Wed 7 | 70 | 03:17: 62 · 15:44: 70 | Waning crescent |
| Thu 8 | 83 | 04:08: 77 · 16:30: 83 | Waning crescent |
| Fri 9 | 93 | 04:51: 88 · 17:11: 93 | New moon |
| Sat 10 | 97 | 05:30: 96 · 17:48: 97 | New moon |
| Sun 11 | 98 | 06:05: 98 · 18:22: 97 | New moon |
| Mon 12 | 95 | 06:38: 95 · 18:54: 93 | Waxing crescent |
| Tue 13 | 89 | 07:10: 89 · 19:25: 85 | Waxing crescent |
| Wed 14 | 80 | 07:40: 80 · 19:56: 75 | Waxing crescent |
| Thu 15 | 69 | 08:11: 69 · 20:27: 63 | Waxing crescent |
| Fri 16 | 57 | 08:44: 57 · 21:03: 51 | Waxing crescent |
| Sat 17 | 45 | 09:23: 45 · 21:48: 39 | First quarter |
| Sun 18 | 33 | 10:17: 33 · 22:55: 29 | First quarter |
| Mon 19 | 26 | 11:41: 26 | First quarter |
| Tue 20 | 29 | 00:32: 26 · 13:20: 29 | First quarter |
| Wed 21 | 40 | 02:00: 34 · 14:31: 40 | Waxing gibbous |
| Thu 22 | 54 | 02:58: 46 · 15:21: 54 | Waxing gibbous |
| Fri 23 | 68 | 03:42: 61 · 16:02: 68 | Waxing gibbous |
| Sat 24 | 82 | 04:21: 75 · 16:40: 82 | Waxing gibbous |
| Sun 25 | 93 | 03:58: 88 · 16:17: 93 | Full moon |
| Mon 26 | 100 | 04:36: 97 · 16:55: 100 | Full moon |
| Tue 27 | 102 | 05:15: 101 · 17:35: 102 | Full moon |
| Wed 28 | 100 | 05:56: 100 · 18:17: 98 | Waning gibbous |
| Thu 29 | 94 | 06:38: 94 · 19:01: 89 | Waning gibbous |
| Fri 30 | 83 | 07:25: 83 · 19:50: 76 | Waning gibbous |
| Sat 31 | 69 | 08:17: 69 · 20:47: 63 | Last quarter |
What does the coefficient mean?
A low coefficient (neap tides) means little difference between high and low water; a high one (spring tides), a lot. It runs from 20 to 120 and is the same number all along the Atlantic coast of Europe; the metres change from port to port.
When are the next spring tides?
The next spring tides run from October 27 to October 30. Spring tide calendar.
Where does the coefficient come from?
The coefficient uses the Brest reference and the 20–120 scale of the SHOM, the French hydrographic service, computed by the Tides Pro engine.
Frequently asked questions
What is the tide coefficient today?
Today, Monday, October 26, 2026, the coefficient is 100 (spring tides).