California King Tides Project
How to Participate |
King Tides Photo Gallery |
About King Tides |
Educator Resources
The next statewide King Tide Project dates are
December 4-5, 2025 and January 2-3, 2026
Plus November 6 and December 6, 2025 in Southern CA and some Northern CA locations.
Check the tide map for your local dates and times.
Join #KingTides on social media:
Sign up to receive email about King Tides.
The California King Tides Project helps us visualize future sea level
by observing the highest tides of today. You can help by taking
and sharing photos of the shoreline during King Tides to create a record of changes to
our coast and estuaries.
Explore a map of
photos from recent King Tides.
Find out what time and how high
the King Tides will be near you. Learn how to participate by uploading your
photos via a web browser or with a free app. Your photos will be added to a map of this season's
King Tides photos. As always, please be cautious and respect the power of the ocean, and don't disturb shorebirds that
may be much farther upland than usual. Download a How to Participate flyer.
Join a King Tides event
Events will be posted throughout the season, so check back for more.
If you would like to organize
an event, please email us at kingtides@coastal.ca.gov.
Each respective hosting organization is responsible for the following events. Please contact
them for further details.
Saturday, December 6, 2025
High Tide Day in San Rafael
711 Grand Avenue, San Rafael, Marin County
Dec. 6, 9am-noon
Presented by Canal Alliance, Multicultural Center of Marin, UC Berkeley, City of San Rafael, Canal Arts, and the Exploratorium.
Join your neighbors and local scientists to document the highest tides of the year! Teams will
use community science kits to explore how low-lying spots along the waterfront are affected by high
tides. Measure flooding and take pictures alongside local experts. San Rafael is one of the Bay Area's
most vulnerable cities to sea level rise, and the information you collect will help our community
prepare. Waterproof boots recommended! This event is free but please register in advance with
Kate.Hagemann@cityofsanrafael.org.
King Tides in China Camp
China Camp State Park, Marin County
Turtle Back Trailhead, North San Pedro Road, San Rafael
Dec. 6, 10am-1pm
Presented by Friends of China Camp.
Come out for a unique educational experience during this winter’s King Tides! Friends of China Camp
will be hosting a tabling event to explore how these extreme high tides give us a
glimpse into the future of sea level rise. Learn how King Tides affect our local
environment and infrastructure, discover what they tell us about climate change,
and find out how you can get involved in community science through the California
King Tides Project. This is a family-friendly, interactive event—stop by to chat
and pick up educational materials. If you have questions, email
cjackson-clark@friendsofchinacamp.org.
King Tides Walk
EcoCenter
2560 Embarcadero Road, Palo Alto, Santa Clara County
Dec. 6, 11:30am-1:30pm
Presented by Environmental Volunteers.
Join a fun (free!), interactive learning experience which will teach you about what King Tides are
and why they are exciting! The event will include a brief hands-on science talk about the tides,
and then a gentle walk through the Palo Alto Baylands. Highest of the high tides is at 12:24pm.
Walks go rain or shine. Be prepared for some wet trails and maybe some puddle-jumping. Participation
is free, but space is limited; please register online (and sign up on the waitlist if tickets are full. We’ll open more up soon).
Find more details online.
King Tides Java with a Lifeguard
Asilomar State Beach and Conference Grounds
Pacific Grove, Monterey County
Dec. 6, Time TBD
Presented by Asilomar State Beach/California State Parks.
Join the lifeguards for morning coffee during king tides. More details to come.
