Updated 16 Sep 2026 · recomputed nightly
Is March 2027 a good month to visit San Diego?
Calm — the typical March day in San Diego is calmer than 79% of its year.
The weather is the trade-off here, not the crowds.
Calm · Lively · Busy · Packed rank a day against San Diego's own year — not a headcount.
March 2027 is the San Diego most visitors never see — Calm on 25 of 31 days — 4 days run Busy or Packed, mild and wet, around 17°C / 63°F with rain on about 10 days.
Yes. The typical March day in San Diego is Calm, and only 4 of the 31 days in our window run Busy or Packed. Expect around 17 °C by day, with rain on about 10 days. Public holidays in Canada and United States add to it. Cruise ships call on 5 of the 31 days. No week of March is meaningfully quieter — the typical day is Calm throughout; pick by day instead. The crush is at the zoo's gates at holiday mid-morning; the quiet is at Coronado's long sand. The calmest day is Monday 1 March, the busiest Friday 19 March.
In short, a genuinely good window to pick.
Among the 12 months we forecast for San Diego, March ranks 9th for crowd pressure. Its heaviest day is Fri 19 Mar, busier than 95% of the year; its lightest is Mon 1 Mar at 21%.
You won't need skip-the-line tickets here — that's rather the point. A month like this is the one for the longer visit — the guided walk, the food tour, the day out of town, with room and time to enjoy them. see what's on →
Pack for wet first — rain on 10 of 31 days.
A folding one lives in the day bag and weighs nothing.
See umbrellas →
Wet stone is the thing to plan around in a month this wet.
See walking shoes →
How busy is San Diego in March?
The busiest days are the 19th, 23rd, 27th and 28th. Away from those, most days sit Calm. The calmest stretch is the 1st–18th.
Ships call on 5 of 31 days, a typical call day carrying at least 2,650 guests — real, but a secondary part of the crowd here; the season moves the needle more.
The month is not one thing: its lightest day sits at 21% of the year and its heaviest at 95%, so where you land inside it matters. Daylight runs about 12 hours.
Either side of it, February is far calmer and April picks up.
Calm apart from 4 days — the 19th, 23rd, 27th and 28th, which run packed or busier. Any other date works.
Mon 01 Mar Calm busier than 21% of days here
Record San Diego on Mon 1 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 02 Mar Calm busier than 21% of days here
Record San Diego on Tue 2 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 03 Mar Calm busier than 21% of days here
Record San Diego on Wed 3 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 04 Mar Calm busier than 21% of days here
Record San Diego on Thu 4 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 05 Mar Calm busier than 21% of days here
Record San Diego on Fri 5 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 06 Mar Calm busier than 21% of days here
Record San Diego on Sat 6 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 07 Mar Calm busier than 21% of days here
Record San Diego on Sun 7 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 08 Mar Calm busier than 21% of days here
Record San Diego on Mon 8 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 09 Mar Calm busier than 21% of days here
Record San Diego on Tue 9 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 10 Mar Calm busier than 21% of days here
Record San Diego on Wed 10 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 11 Mar Calm busier than 21% of days here
Record San Diego on Thu 11 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 12 Mar Calm busier than 21% of days here
Record San Diego on Fri 12 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 13 Mar Calm busier than 21% of days here
Record San Diego on Sat 13 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 14 Mar Lively busier than 42% of days here · ⚓1
- Europa — guest capacity 408
Record San Diego on Sun 14 Mar 2027 is forecast Lively. 1 cruise ship scheduled, at least 408 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 15 Mar Calm busier than 21% of days here
Record San Diego on Mon 15 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 16 Mar Calm busier than 21% of days here
Record San Diego on Tue 16 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 17 Mar Calm busier than 21% of days here · Canada public holiday
Record San Diego on Wed 17 Mar 2027 is forecast Calm. Why: Canada public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 18 Mar Calm busier than 21% of days here
Record San Diego on Thu 18 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 19 Mar Packed busier than 95% of days here · ⚓1
- Emerald Princess — guest capacity 3,066 09:00–22:00
Record San Diego on Fri 19 Mar 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,066 guests at double occupancy; ships in port 09:00–22:00. Nearest calmer day: Thu 18 Mar (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/san-diego/#d-2027-03-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 20 Mar Calm busier than 21% of days here
Record San Diego on Sat 20 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 21 Mar Calm busier than 21% of days here
Record San Diego on Sun 21 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 22 Mar Calm busier than 21% of days here
Record San Diego on Mon 22 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 23 Mar Packed busier than 95% of days here · ⚓1
- Emerald Princess — guest capacity 3,066 07:00–20:00
Record San Diego on Tue 23 Mar 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,066 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Mon 22 Mar (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/san-diego/#d-2027-03-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 24 Mar Calm busier than 21% of days here
Record San Diego on Wed 24 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 25 Mar Calm busier than 21% of days here
Record San Diego on Thu 25 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 26 Mar Lively busier than 42% of days here · United States public holiday
Record San Diego on Fri 26 Mar 2027 is forecast Lively. Why: United States public holiday; Canada public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 27 Mar Packed busier than 93% of days here · ⚓1
- Koningsdam — guest capacity 2,650
Record San Diego on Sat 27 Mar 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,650 guests at double occupancy. Nearest calmer day: Fri 26 Mar (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/san-diego/#d-2027-03-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 28 Mar Busy busier than 65% of days here · ⚓1
- Zaandam — guest capacity 1,432
Record San Diego on Sun 28 Mar 2027 is forecast Busy. 1 cruise ship scheduled, at least 1,432 guests at double occupancy. Nearest calmer day: Mon 29 Mar (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/san-diego/#d-2027-03-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 29 Mar Calm busier than 21% of days here · Canada public holiday
Record San Diego on Mon 29 Mar 2027 is forecast Calm. Why: Canada public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 30 Mar Calm busier than 21% of days here
Record San Diego on Tue 30 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 31 Mar Calm busier than 21% of days here
Record San Diego on Wed 31 Mar 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/san-diego/#d-2027-03-31 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of March is quietest in San Diego?
No week of March is meaningfully quieter — the typical day is Calm throughout; pick by day instead.
The upside of a quiet March
- The big-ticket sights are walk-ins now; the summer booking scramble is gone.
- Keep the days loose — decide over breakfast, not weeks ahead.
- Early on, you can have the busiest spots almost to yourself — bring a camera.
No queues to skip, and nothing to book ahead — that's the whole point.
March weather in San Diego
Mild — around 17°C / 63°F, with a light jacket for the evenings, with rain on about 10 days, so keep a layer handy.
This is the value month: no need to book far ahead, and the freedom to change plans on the day is part of what you're getting.
More about San Diego in March
Based on: United States' public holidays · the official airport-arrivals pattern (BTS T-100, measured 2023–2025; airport-arrivals proxy for visitor volume) · five years of weather records (2019–2023) · confirmed event dates · the published cruise schedule
Every figure is recomputed nightly from real cruise schedules, public and school holidays, and long-run climate normals. Gaps are shown, not filled.
