San Juan Island National Historical Park in October
October at San Juan Island National Historical Park averages a daytime high near 59°F and an overnight low around 44°F, with about 2.3" of precipitation. Visitation runs about 0.7× the park's average month, which makes October a quiet month here.
- Average low
- 44°F
- Average high
- 59°F
Range across the year: 37°F to 73°F
- Precipitation
- 2.3 in
- Daylight
- 10.5 hours
Roughly 6% of the park's yearly visitors come in October: about 26,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes October the 7th-busiest of the park's twelve months, sitting between the July peak (1.8×) and the January low (0.5×).
October is our recommended month at San Juan Island: the lightest crowds of the park's good-weather months.
The daily average of about 51°F is a comfortable range for hiking and being outdoors all day. 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 October instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 10.5 hours of daylight in October 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 October visit is likely to feel busier than it did a few years ago.
How October compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| September | 68°F / 48°F | 1.4× Busy | 54 Fair |
| October | 59°F / 44°F | 0.7× Quiet | 59 Fair |
| November | 51°F / 40°F | 0.6× Quiet | 54 Fair |
All twelve months at San Juan Island, with the best time to visit.
Things to do at San Juan Island in October
The National Park Service tags 7 San Juan Island activities for fall. 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
October averages a daytime high near 59°F and an overnight low around 44°F at San Juan Island National Historical Park, with about 2.3 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.
October is quiet at San Juan Island National Historical Park (about 0.7× the average month). Our best-time score rates it "Fair" at 59/100. October is our recommended month for this park.
The busiest month is July and the quietest is January. October sits at about 0.7× the park's average, or 6% of annual visitation.
A typical October sees about 26,000 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 October
Booking a October trip to San Juan Island National Historical Park? Compare hotels, cabins and vacation rentals near the park with live October 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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Visiting San Juan Island in October?
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See the full ranking of the best national parks to visit in October.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.