Seaside, OR Tide Chart
Estimated high and low tides for Seaside on the Pacific Northwest coast, from the nearest NOAA station (Astoria, 17 mi). Oregon's classic beach resort town, with a mile-and-a-half oceanfront Promenade and a wide, flat beach where the water sweeps a long way in and out across the sand.
Tide chart
Drag to resize (2–7 days) · hold to move the dates, or use the Week/Day/Today buttons above · tap the curve for exact heights.
Dark bands = night. Feet above MLLW, station local time. Not a flood, navigation, or public-safety forecast.
Tide times and predicted heights: NOAA CO-OPS.
Prefer a plain list? The tide finder below shows every high and low as an accessible table, with a CSV download.
Next king tides
The biggest predicted tides of the coming year at this station, and the lowest-water windows that typically follow — periods with some of the highest predicted astronomical tides of the year. Consult official local forecasts and alerts before planning any beach, boating or shoreline activity.
Computed from a full year of NOAA predictions: the top 10% of high tides, grouped into date windows.
Sun & moon
Find high tides by date
The next 5 days to start — every high and low. Add 5 more days as many times as you like, or pick any range up to a year out.
Estimated tide times for Tuesday, July 21
| Tide | Time | Height |
|---|---|---|
| Low tide | 1:38 AM | 1.1 ft |
| High tide | 7:36 AM | 5.9 ft |
| Low tide | 1:13 PM | 1.8 ft |
| High tide | 7:41 PM | 8.0 ft |
Estimated for Seaside from the nearest NOAA station, Astoria (17 mi away) — actual times can differ by a few minutes. Heights in feet above MLLW. For any other day, use the chart above. Refreshed daily.
Which tide station covers Seaside?
Seaside has no NOAA tide station of its own, so the predictions on this page come from the nearest one: Astoria (Astoria, OR), about 17 miles away. Along an open coast the high and low tides shift only slightly over that distance, so these times are a close guide for Seaside — but treat them as approximate, and for anything safety-related use NOAA directly.
What the tides are like at Seaside
Seaside sits on the Pacific Northwest coast, where tides run mixed — two high tides and two low tides most days, cycling at uneven intervals. The tidal range along this stretch is moderate to large, often 6 to 8 feet. For the exact predicted heights and times, read the table and chart above (from the Astoria station).
Nearby Oregon tide spots
Where do the Seaside, OR tide times come from?
Seaside has no NOAA station of its own, so these predictions come from the nearest one, Astoria (Astoria), about 17 miles away. Tides shift only slightly along an open coast, so they're a close guide — confirm with NOAA for anything safety-critical.
How many tides a day does Seaside get?
Seaside typically gets two high tides and two low tides each day — a mixed pattern. Exact times for today are in the table above.
Where does the tide data come from?
Straight from NOAA CO-OPS, the official U.S. source for tide predictions — for Seaside, OR it uses the NOAA station listed above. Heights are in feet above MLLW (mean lower low water, the standard chart datum) and times are shown in the station's own local time.
How far ahead can I see the tides?
Tide predictions are computed from astronomy (the positions of the moon and sun), so they're available about a year ahead. Use the date-range finder to list every high tide between any two dates — for general reference and low-risk scheduling only. Before any marine or shoreline activity, confirm conditions with official local forecasts, alerts, harbor guidance, and NOAA.
What is a king tide?
An informal name for the highest tides of the year, which happen when a new or full moon lines up with the moon's closest approach to Earth. In the finder, the top 10% highest tides in your range are marked with a crown — periods with some of the highest predicted astronomical tides of the year.
What actually makes the tide bigger or smaller?
The engine is gravity: the moon and sun pull the ocean into bulges. When they line up at a new or full moon you get the biggest swings (spring tides); at quarter moons their pulls partly cancel (neap tides), and the moon's closest approach (perigee) super-sizes things further — that's a king tide. River flow, the shape of the bay, and long-term sea-level cycles can also affect the actual water level, which is why real conditions can differ from the astronomical prediction shown here.
What are the highest tides in the world — and in the U.S.?
The world's largest tides are in Canada's Bay of Fundy, where the range between low and high can top 50 feet (it's outside NOAA's network, so it isn't listed here). In the U.S., the giants are Alaska's Cook Inlet — Anchorage sees swings around 26–30 feet — along with Southeast Alaska ports like Skagway, and on the East Coast, Eastport, Maine at roughly 18 feet. All of those have dedicated pages here.
Can I save my home beach and other spots I follow?
Yes — tap ＋ Add to Saved Stations next to any station's name (it turns into a green Saved note), or ＋ Add nearest inside the Saved Stations dropdown to add the station closest to you (allow location access). Your saved spots appear as one-tap cards on the tides home page, the Default column's radio button picks your primary station, and Edit removes stations. Everything is stored on your device; no account needed.
Is this free? Do I need an account?
Completely free, no sign-up. It's built on public NOAA data and works on any device.