The Balboa Peninsula provides shelter from the open Pacific to make Newport Beach waters the warmest in California year round.
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Water along the southern coast reaches around 68 degrees F (20 degrees Celsius) during summer, while off northern beaches the ocean temperature hovers at just 52 degrees F (11 °C). Actual ocean temperatures do of course vary from year to year depending upon the weather and the flow of ocean currents.
Makunufushi Island, MaldivesThe Maldives doesn't have a swimming season because the water is always warm enough (82 to 86 degrees) to dive right in and splash around. There are tons of gorgeous beaches, but we're partial to the private island of Makunufushi.
But on that same beach, it's not uncommon to see kids shivering as they run out of the water, or a surfer wearing a partial wetsuit as they jog out for a session. California's ocean water is pretty cold, even in the summer, and it often catches visitors off-guard.
Can I Swim at My Coastal Beach? The vast majority of the time, California's waters are open and available for recreation uses visitors enjoy. Unfortunately, there are times when it is not advisable to go in the waters due to bacterial contamination.
San Francisco is surrounded by water, but the area isn't known for warm beaches where you can soak in the sun all summer long. But there are still pockets of sandy coves and coastal areas where you can find warm beaches near San Francisco.
In general, the swimming season ends in October. Average annual water temperature on the coast in San Diego is 63°F, by the seasons: in winter 59°F, in spring 61°F, in summer 67°F, in autumn 66°F.
Not all beaches along the California coastline are recommended for swimming or wading. The very things that make these areas such spectacular places to look at and enjoy can be lethal to those caught unaware along the shoreline.
With 113 kilometers (70 miles) of gorgeous coastline and tons of beaches, you'll enjoy lots of great swimming spots in this city. San Diego has warm waters, sandy shores, and plenty of activities for water recreation enthusiasts.
The water temperature in the ocean in Los Angeles varies throughout the year, but generally, it is warm enough to swim from late spring to early fall. The warmest months are typically July, August, and September, when ocean temperatures can reach into the low 70s Fahrenheit (low 20s Celsius).