Weather in Irvine in March

Prime time. If you get to pick your dates, March is the one. Highs average 17.4 °C, lows 13.1 °C, and rain falls on 5 days — nothing in the month is working against you.

March ranks 10 of 12 — near the bottom of Irvine's year. June is the month that works, and the swing between the two is 24 points, which is a different holiday rather than a slightly better one. Worth keeping in perspective: March is the weakest month of Irvine's year and it is still a perfectly good one. The downside here is small.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 17.4 °C days and 13.1 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.3 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest March day reached 27.9 °C and the coldest night fell to 9 °C, and the wettest single day dropped 42 mm — roughly 120% of the month's rain in one day.

This is the volatile part. March rainfall has ranged from 2 mm to 118 mm across the twenty years measured — a 116 mm spread around an average of 35 mm. The average is real but almost no individual March looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How March sits in the year

Temperatures hold steady either side: 17 °C in February, 17.4 here, 17.8 in April. Nothing about the timing within the month matters much.

Daylight in March

11.9 hours of daylight, gaining 1 hours across the month. That is between Irvine's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 10.7 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

March in Irvine versus nearby

If Irvine is one option among several, the nearby comparison is worth making. Riverside is a better bet in March — 6.1 °C warmer, the same number of rain days. Los Angeles is a better bet in March — 4.5 °C warmer, the same number of rain days.

So: March works, with June the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Irvine

See all twelve months in Irvine, or where else to go in March.