Southeast Alaska to Cook Inlet · 31 Stations · Real-Time NOAA Data

Alaska tide charts,
beautifully visualized

Watch tides across 31 stations — from Ketchikan and Juneau to Cook Inlet — including some of the largest tidal swings on Earth.

Get Full Access → Try the Free Map
31
Tide Stations
38 ft
Max Tidal Range
Real-Time
NOAA Data
1×
One-Time Purchase

About Alaska Tides

Among the most extreme tides on Earth

Alaska's tidal ranges are in a class of their own. Southeast Alaska and the Juneau area see ranges of 14–18 feet — already dramatic. Cook Inlet near Anchorage takes it further still, with tidal ranges that regularly reach 30–38 feet, placing it among the top five largest tidal ranges anywhere on Earth. The inlet's funnel shape amplifies the incoming tidal wave the same way the Bay of Fundy does on the East Coast.

In Alaska, tidal awareness isn't just useful — it's a safety requirement. Remote coastlines, massive mudflats, fast-rising tides, and limited escape routes mean that knowing the tide before you act can be the difference between a safe outing and a dangerous situation.

⚓
Boaters & Sailors
Navigate Alaska's remote anchorages, bar crossings, and fjords with real-time tidal state. Tidal currents here can be fierce and fast.
🐻
Bear Viewers & Wildlife Watchers
Low tides bring bears and wildlife to the flats. Know the tidal window before you head out on foot in tidal areas.
🎣
Anglers & Fishermen
Salmon, halibut, and rockfish all respond to tidal cycles. See tidal state across multiple Alaska stations at once to plan your day.
🚣
Kayakers & Paddlers
Alaska tides can rise faster than you can walk on mudflats. Know the tidal state and direction before every launch.

Full Access

Unlock Alaska & all 10 US regions

One-time purchase · All coastlines · 300+ tide stations

Get Full Access →

FAQ

Alaska tide questions

What are the tides like in Alaska?
Alaska has some of the most extreme tidal ranges on Earth. Southeast Alaska and Juneau see ranges of 14–18 feet. Cook Inlet near Anchorage regularly sees 30–38 feet — among the largest tidal ranges in the world. Tidal awareness is a safety necessity in Alaska's remote coastal areas.
Why are Cook Inlet tides so extreme?
Cook Inlet's extreme tides result from its funnel shape and length — as the tidal wave moves up the narrowing inlet, it amplifies dramatically, similar to what happens in the Bay of Fundy. The inlet's geometry creates near-resonance with the tidal period, which massively amplifies the tidal range.
How many tide stations does TideSwell cover in Alaska?
TideSwell covers 31 NOAA tide stations across Alaska, from Ketchikan and Juneau in Southeast Alaska through Sitka, Prince William Sound, and Kodiak to Cook Inlet and Anchorage.