High Tide Flooding Outlook for July 2025

July is predicted to be a relatively quiet month on the Atlantic and Gulf coasts from a flooding perspective, with no locations forecast to have flooding. On the West Coast, flooding is possible in the southern California harbors of San Diego, La Jolla, Los Angeles, and Santa Monica. The Hawaiian Islands will also see the possibility of flooding in all harbors, and flooding is likely on the island of Kauai. Mean sea level is typically higher in the summertime due to changing weather patterns and rising water temperatures, and higher tides (and also lower low tides) should be expected on and around the full moon, on July 10, and the new moon, on July 24.

July 10 – Full Moon
July 24 – New Moon

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. Real-time weather conditions, including wind direction and storm surge, may also increase the potential for flooding.

Make sure to print out the monthly tide chart from USHarbors so that you can stay on top of any potential flooding events in your favorite harbor.

Northeast: Possible & Likely Flood Days

• Coastal flooding based primarily on tides is unlikely this month.

Mid-Atlantic: Possible & Likely Flood Days

• Coastal flooding based primarily on tides is unlikely this month.

Southeast: Possible & Likely Flood Days

• Coastal flooding based primarily on tides is unlikely this month.

Gulf Coast: Possible & Likely Flood Days