December 2025 high tide flooding predictions
by US Harbors 2 Dec 2025 16:46 PST
High tide flooding outlook for December 2025 © Shutterstock, Frame Craft 8
The high tide action this month will largely be at the periphery of the country, with nearly every harbor on the West Coast and all of them in Hawaii seeing the likelihood of flooding on or about December 4, during the full moon, and on the December 19 new moon.
On the East Coast, Boston is likely to see its highest tides of the year and may exceed the high tide flooding threshold due to tides alone, even without factoring in any weather conditions that could increase flood levels even further. The only other East Coast harbor likely to see flooding is Bar Harbor, Maine, although flooding is possible in many other major harbors along the eastern seaboard, including Charleston, South Carolina, and Port Canaveral, Florida.
Higher than normal high tides — and, of course, lower than normal low tides — will occur around the perigean spring tide, when the Moon is full and closest to Earth. Tides will increase leading up to and after the Winter Solstice, on December 21, due to the increased angle of the Sun relative to the Earth's equator. In addition, real-time weather conditions, including wind direction and storm surge, may also increase the potential for flooding. In all locations, higher than normal high tides (and lower low tides) should be expected on or around the full moon, on December 4, and the new moon, on December 19.
Note that while NOAA only makes these flooding predictions for harbors with National Ocean Service water level stations, other locations along the coast may experience similar high-water events during these time periods.
December 4 - Full Moon
December 19 - New Moon
View the detailed flooding report for harbors in every region below, and make sure to print your tide charts from US Harbors to be prepared for the high water level days in your favorite harbor.
Northeast: Possible & Likely Flood Days
- Bar Harbor, ME — POSSIBLE December 3, 4, 7, 8; LIKELY December 5, 6
- Portland, ME — POSSIBLE December 3-8
- Boston, MA — POSSIBLE December 3, 7, 8; LIKELY December 4, 5, 6
- Providence, RI — POSSIBLE December 3-7
- Newport, RI — POSSIBLE December 3-7
- Bridgeport, CT — POSSIBLE December 2-7
- Kings Point, NY — POSSIBLE December 1-7, 31
- The Battery, NY — POSSIBLE December 2-7
- Bergen Point West Reach, NY — POSSIBLE December 3-7
Mid-Atlantic: Possible & Likely Flood Days
- Sandy Hook, NJ — POSSIBLE December 2-7
- Atlantic City, NJ — POSSIBLE December 3-8
- Cape May, NJ — POSSIBLE December 3-8
- Lewes, DE — POSSIBLE December 3-8
- Wachapreague, VA — POSSIBLE December 3-7
- Kiptopeke, VA — POSSIBLE December 4, 5
- Sewells Point, VA — POSSIBLE December 3-7
Southeast: Possible & Likely Flood Days
- Duck, NC — POSSIBLE December 3-7
- Beaufort, Duke Marine Lab, NC — POSSIBLE December 4, 5
- Springmaid Pier, SC — POSSIBLE December 3-7
- Charleston, SC — POSSIBLE December 3-7
- Fort Pulaski, GA — POSSIBLE December 2-7
- Fernandina Beach, FL — December 3-6
- Mayport (Bar Pilots Dock), FL — POSSIBLE December 3-7
- Trident Pier, Port Canaveral, FL — POSSIBLE December 3-7
Gulf Coast: Possible & Likely Flood Days
- Cedar Key, FL — POSSIBLE December 3-7
- Dauphin Island, AL — POSSIBLE December 4-6
- Bay Waveland Yacht Club, MS — POSSIBLE December 4-7
- Morgans Point, Barbours Cut, TX — POSSIBLE December 4-6
- Eagle Point, Galveston Bay, TX — POSSIBLE December 1-11, 13-24, 30, 31
- Galveston Pier 21, TX — POSSIBLE December 2-8
West Coast: Possible & Likely Flood Days
- San Diego, CA — POSSIBLE December 3; LIKELY December 4-6
- La Jolla, CA — POSSIBLE December 3, 4, 6; LIKELY December 5
- Los Angeles, CA — POSSIBLE December 3, 6; LIKELY December 4, 5
- Santa Monica, CA — POSSIBLE December 3, 6; LIKELY December 4, 5
- Point San Luis, CA — POSSIBLE December 3, 4, 6; LIKELY December 5
- Monterey, CA — POSSIBLE December 3, 4, 5, 6
- Alameda, CA — POSSIBLE December 5
- Point Reyes, CA — POSSIBLE December 3-6
- Arena Cove, CA — POSSIBLE December 3, 4, 6, 7, 31; LIKELY December 5
- North Spit, CA — POSSIBLE December 2, 7, 30; LIKELY December 3-6, 31
- Port Orford, OR — POSSIBLE December 2, 3, 7, 31; LIKELY December 4-6
- Charleston, OR — POSSIBLE December 2, 3, 7, 31; LIKELY December 4-6
- South Beach, OR — POSSIBLE December 2, 7, 8, 30, 31; LIKELY December 3-6
- Toke Point, WA — POSSIBLE December 1, 2, 7, 8, 30, 31; LIKELY December 3-6
- Seattle, WA — POSSIBLE December 5-10, 25
- Port Townsend, WA — POSSIBLE December 4-10, 20-26, 30, 31
- Port Angeles, WA — POSSIBLE December 1, 2, 3, 6, 7, 29-31; LIKELY December 4, 5
- Friday Harbor, WA — POSSIBLE December 3-10, 19-23, 30, 31
- Cherry Point, WA — POSSIBLE December 5-9
Hawaii: Possible & Likely Flood Days
Kauai:
- Nawiliwili, HI — POSSIBLE December 3, 4, 6, 7; LIKELY December 5
Oahu:
- Mokuoloe, HI — POSSIBLE December 3, 8, 31; LIKELY December 4-7
- Honolulu, HI — POSSIBLE December 3, 7, 8, 31; LIKELY December 4-6
Maui:
- Kahului, Kahului Harbor, HI — POSSIBLE December 3, 7; LIKELY December 4-6
Hawaii, Big Island:
- Kawaihae, HI — POSSIBLE December 3, 8; LIKELY December 4-7
- Hilo, Hilo Bay, Kuhio Bay, HI — POSSIBLE December 3, 7, 8; LIKELY December 4-6
If you see high tide flooding near you, please
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About these Predictions: "These flooding likelihoods are derived from a probabilistic model that incorporates tide predictions, sea level rise trends, and seasonal changes in coastal sea level to predict the potential that a higher than normal high tide may exceed established National Ocean Service flood thresholds. During these periods, high tide flooding may occur in flood-prone areas." NOAA.