Costa Mesa

What is the climate like in Costa Mesa?

Costa Mesa is warmest in August, when daily highs average 81°F (27°C), and coolest in January, when lows fall to about 50°F (10°C). The wettest month is typically January and the driest is July; the year sees roughly 14 in of precipitation.

• Warmest monthAugust — average high 81°F (27°C)
• Coolest monthJanuary — average low 50°F (10°C)
• Wettest monthJanuary (3.0 in)
• Driest monthJuly (0.1 in)
• Annual precipitation14 in