Costa Mesa Guide
For foreign visitors
Costa Mesa weather essentials
Month
High
Low
Precip
Apr
63°F 17°C
49°F 9°C
0 in 1 cm
May
66°F 18°C
53°F 11°C
0 in 0 cm
Jun
69°F 20°C
56°F 13°C
0 in 0 cm
Jul
72°F 22°C
59°F 15°C
0 in 0 cm
Aug
75°F 23°C
60°F 15°C
0 in 0 cm
Sep
74°F 23°C
59°F 15°C
0 in 0 cm
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