Average monthly water temperature in Half Moon Bay, the United States of America
On this page you find the mean water temperature over the year in Half Moon Bay (California), the United States of America. Discover the unique water temperature patterns, from its warmest to its coolest months.
In Half Moon Bay, cooler water temperatures are a year-round feature. The warmest month is June, averaging 14°C (57°F).
The coldest month, January, sees averages of 12°C (54°F). This does not make it a great month for visitors who enjoy swimming.
Half Moon Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Half Moon Bay - and find the best time to visit.
Half Moon Bay 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Half Moon Bay climate overview or explore weather in the United States of America.
Popular this month
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.