Oceans Church organized the event Christen SoCal, announced as "the largest baptism by immersion in history".
The baptisms took place at Pirate's Cove on Whit Sunday.
4166 people were baptized on site that day, in front of 8000 participants from more than 280 churches.
For West Coast Life Church pastor Ray Gene Wilson, the day was "historic".
"What an incredible and historic day. Thousands baptized at Pirate's Cove, God is moving to California!"
"Heaven rejoiced last night as thousands were baptized at Pirate's Cove! God is not done with California," reads an Instagram post from West Coast Life Church. .