Costa Mesa Weather in January

January in Costa Mesa brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 9°C (48°F). With excellent weather conditions overall, it's a good time to visit.

Rainfall in Costa Mesa in January

This month experiences about 5 days of rain according to historical data, averaging 39 mm (1.5 in). The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in Costa Mesa in January

The excellent temperature in Costa Mesa in January makes it a solid month to visit, with 20°C (68°F) during the day and 9°C (48°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Costa Mesa in January

There are approximately 198 hours of sunshine this month, resulting in mostly clear days.

So this is a great month to visit if you prefer dry days with pleasant temperatures.