San Juan Island National Historical Park in March
March at San Juan Island National Historical Park averages a daytime high near 53°F and an overnight low around 38°F, with about 1.4" of precipitation. Visitation runs about 0.7× the park's average month, which makes March a quiet month here.
- Average low
- 38°F
- Average high
- 53°F
Range across the year: 37°F to 73°F
- Precipitation
- 1.4 in
- Daylight
- 11.6 hours
Roughly 6% of the park's yearly visitors come in March: about 25,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes March the 8th-busiest of the park's twelve months, sitting between the July peak (1.8×) and the January low (0.5×).
On our Best Time to Visit score March rates 57/100 ("Fair"). Our recommended month is October: the lightest crowds of the park's good-weather months.
The daily average of about 46°F is cool, so layers and a shorter daylight window matter. These figures are 1991–2020 NOAA climate normals from the nearest station, about 1.7 miles from the park.
Because June, July and August together draw about 42% of annual visitors, choosing March instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 11.6 hours of daylight in March to explore — between the 8.1-hour midwinter low and the 15.9-hour summer high.
Park-wide, 2025 drew 420,922 recreation visits, up 3.7% from 405,925 in 2024.
Across the past decade overall visitation has risen about 68.5%, so a March visit is likely to feel busier than it did a few years ago.
How March compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| February | 49°F / 37°F | 0.5× Very quiet | 57 Fair |
| March | 53°F / 38°F | 0.7× Quiet | 57 Fair |
| April | 57°F / 41°F | 0.8× Quiet | 61 Good |
All twelve months at San Juan Island, with the best time to visit.
Seasonal closures in March 2027
The National Park Service lists these San Juan Island facilities as closed during March 2027. The dates are the park's own, read on October 11, 2026. A facility that is not listed here may still be closed, so confirm on the park's site before you go.
- American Camp Visitor Center (visitor center): closed until March 4, 2027
Things to do at San Juan Island in March
The National Park Service tags 7 San Juan Island activities for spring. Each links to the park's own page for it.
- Biking on San Juan Island · reservation required
- Go Kayaking · 15-300 minutes
- Observe Animals on San Juan Island
- Picnicking on San Juan Island
- San Juan Island Junior Ranger Program
- Take in the Views on San Juan Island
- Visit a Beach · 0-24 hours
Frequently Asked Questions
March averages a daytime high near 53°F and an overnight low around 38°F at San Juan Island National Historical Park, with about 1.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 1.7 miles from the park, so conditions inside the park can differ, especially at other elevations.
March is quiet at San Juan Island National Historical Park (about 0.7× the average month). Our best-time score rates it "Fair" at 57/100. Our recommended month is October.
The busiest month is July and the quietest is January. March sits at about 0.7× the park's average, or 6% of annual visitation.
A typical March sees about 25,000 recreation visits at San Juan Island National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near San Juan Island in March
Booking a March trip to San Juan Island National Historical Park? Compare hotels, cabins and vacation rentals near the park with live March availability and prices.
Top-rated places to stay near San Juan Island
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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See the full ranking of the best national parks to visit in March.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.