Best Time to Visit Costa Mesa
When to visit Costa Mesa, California: the best months, shoulder seasons and what weather to expect, based on its subtropical climate.
Costa Mesa has a subtropical climate, so spring and autumn (April–May and September–October) tend to be the most comfortable times to visit, with warm but not punishing temperatures.
High summer can be very hot, while winters are mild. The shoulder seasons usually offer the best balance of pleasant weather, manageable crowds and better value.
Frequently asked questions
The best time to visit Costa Mesa is generally April–May and September–October, given its subtropical climate. Costa Mesa has a subtropical climate, so spring and autumn (April–May and September–October) tend to be the most comfortable times to visit, with warm but not punishing temperatures.