Why Tide Times Change So Much From Place to Place
Here is a fact that surprises people: there is no such thing as "the tide time" for a bay. There is only the tide time for a place. A few miles of water can move high tide by more than an hour, and this guide proves it with real numbers from one bay on one morning.
One tide, five different times
These are NOAA's predictions for the morning high tide on Saturday, November 7, 2026, at five spots in San Francisco Bay, all of which have their own pages on this site:
- San Francisco (Golden Gate): high tide at 9:38 AM, 6.2 feet
- Richmond Inner Harbor: high tide at 9:54 AM, 6.5 feet
- Alameda: high tide at 10:08 AM, 6.9 feet
- Redwood City: high tide at 10:36 AM, 8.7 feet
- Crockett, up at the top of the bay: high tide at 11:19 AM, 6.2 feet
Read that list again. The same body of water, the same morning tide, and the high water arrives at Crockett one hour and forty-one minutes after it arrives at the Golden Gate. The first low tide spreads out even wider: 3:09 AM at the Golden Gate and 5:05 AM at Crockett, nearly two hours apart. And the heights are not the same either. Redwood City's high tide that morning stood at 8.7 feet, two and a half feet higher than the 6.2 feet at the Golden Gate, on the same tide.
Why the delay happens
The tide does not rise everywhere at once like water in a bathtub. It travels. The ocean's tide arrives at the coast as a very long, very slow wave, and that wave has to push its way into every bay, harbor, river mouth, and creek. Traveling takes time, so the farther the water has to go, the later high tide arrives. Crockett sits at the far end of San Francisco Bay, past two bridges and miles of narrowing channels, and the wave gets there last.
The heights change for a related reason. When the moving tide squeezes into a narrower or shallower space, the same amount of water has less room, so it piles up higher, the way traffic bunches into a jam at a lane closure. Redwood City sits far up a shallow arm of the bay, and its 8.7 foot high tide that morning is the bunching, measured. Wide, deep water near the ocean, like the Golden Gate, spreads the same tide out and shows a smaller number.
One thing that barely changes: the fishing windows
Here is the contrast that ties the whole site together. The moon windows move very little across one bay, because every spot in the bay shares nearly the same sky. On that same morning, November 7, 2026, the moon overhead best time at the Golden Gate ran 9:45 AM to 11:45 AM, and at Crockett, 9:44 AM to 11:44 AM. One minute apart. So two fishermen at opposite ends of San Francisco Bay that day shared the same best fishing times almost to the minute, while their high tides sat an hour and forty-one minutes apart. The moon is a regional clock. The tide is a local one. That is why every spot page here carries its own tide table under a set of fishing times that look familiar from the next town over.
Rivers and creeks stretch it further
The effect grows as the water gets skinnier. Tide tables for spots up tidal rivers can run hours behind the coast, and the shape of the day can change too: a place with two even tides at the shore can have one much bigger than the other by the time the wave has worked its way inland. Wind can push the real water level off the prediction as well, holding water in or blowing it out, which is one more reason predictions are estimates and carry the "not for navigation" warning you will see in the footer of every page here.
What this means for your fishing
It means the tide time in a newspaper, or for the big port city down the road, is not your tide time. If your spot is Crockett and you plan by the Golden Gate's table, you will arrive at slack water an hour and three quarters after you expected the turn, and you will fish the wrong water all morning. This is exactly why this site carries a separate page for every spot instead of one table per state. Our station list comes from NOAA, which publishes predictions for more than 3,000 places on the U.S. coast; this site carries 3,078 of those spots, including 193 in California alone, precisely because neighboring places refuse to share a tide.
So the rule is simple: always read the table for the spot itself, not the nearest famous place. Find yours in the California spots list or your own state, and if you fish two spots, save both. Five miles can be worth an hour, and an hour is the whole bite. The fishing times layered on top of the tides are explained on How we pick the best times.