Mission Viejo

What is the climate like in Mission Viejo?

The best time to visit Mission Viejo is typically April – November, with trip comfort peaking in July (8.8/10). Mission Viejo is warmest in August, when daily highs average 75°F (24°C), and coolest in February, when lows fall to about 52°F (11°C). The wettest month is typically January and the driest is July; the year sees roughly 14 in (350 mm) of precipitation.

• Best time to visitApril – November — comfort peaks in July (8.8/10)
• Warmest monthAugust — average high 75°F (24°C)
• Coolest monthFebruary — average low 52°F (11°C)
• Wettest monthJanuary (2.8 in (71 mm))
• Driest monthJuly (0.1 in (2 mm))
• Annual precipitation14 in (350 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromNewport Beach Harbor, 20 km away (1921-2026)