Mira Costa High First Day of School

The first day at Mira Costa High is mostly about orientation - teachers go over syllabi and expectations, and students reconnect with friends and get a feel for their schedule. For incoming freshmen, the campus can feel overwhelming at first, but the routine clicks quickly. A first-day photo is still a rite of passage for many families, even if the student needs a little convincing to pose.

Over the last 3 years, conditions on the first day of school have varied: in 2025 it was mainly clear with a high of 80°F and low of 63°F; in 2024 it was overcast with a high of 79°F and low of 61°F; and in 2023 there was light drizzle with a high of 74°F and low of 63°F. Late August weather in this area can range from overcast marine layer mornings to warm, sunny afternoons, so it's worth checking the forecast the week before.

On August 19, sunrise is at 6:17 AM and sunset is at 7:37 PM. With school typically running from around 8:00 AM to 3:00 PM, students will have full daylight for the entire school day - the sun is well up before the morning bell and stays light well past dismissal. Along the South Bay coast, a morning marine layer is common in late August but typically burns off by mid-morning.

Mira Costa High is located at 1401 Artesia Blvd., Manhattan Beach, CA 90266. It is part of Manhattan Beach Unified.

Mira Costa High serves students in 9th grade through 12th grade.

Mira Costa High has approximately 2,500 students.

Mira Costa High is part of Manhattan Beach Unified, which serves Manhattan Beach and the surrounding area.