Olympic in May: Crowds, Weather & What to Pack
Best window · VisitWhen score 72/100 · #3 of 12 months
May is one of the best months of the year to visit Olympic National Park: crowds run 40% of the August peak (247,409 average visits). Weather: highs average 63°F and lows 43°F, with 6.9″ of precipitation and 15.1 hours of daylight. Computed from NPS and NOAA data.
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Bring for Olympic in May
- Warm mid-layer (fleece or light puffy)See it on AmazonWhy: mornings average 43°F.
- Rain shell + pack coverSee it on AmazonWhy: 6.9″ of precipitation is normal this month.
- Waterproof boots — plus navigation and a basic first-aid kitSee it on AmazonWhy: 6.9″ of rain is normal this month.
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Crowds in May
Olympic averages 247,409 recreation visits in May — 40% of what August, the peak month, draws. That crowd level sets the tone for parking, permits and lodging.
Weather & daylight
Days are pleasant (highs average 63°F), and mornings are chilly (lows average 43°F). This is one of the wetter months (6.9″ of precipitation on average). Mid-month daylight runs 15.1 hours.
NOAA 1991–2020 monthly normals, station QUINAULT 4 NE, WA US (13 mi from park coordinates, 286 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.
What to pack for Olympic in May
Computed from the month's weather normals above — not a generic list.
- Warm mid-layer (fleece or light puffy) — mornings average 43°F
- Rain shell + pack cover — 6.9″ of precipitation is normal this month
- Waterproof boots — plus navigation and a basic first-aid kit — 6.9″ of rain is normal this month
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Also at their best in May
Other parks whose computed May verdict is a best window — same NPS × NOAA formula:
- Lake Clark in May — 7% of peak crowds, highs 59°F, score 96/100
- North Cascades in May — 11% of peak crowds, highs 69°F, score 96/100
- Katmai in May — 1% of peak crowds, highs 52°F, score 95/100
- Gates of the Arctic in May — 12% of peak crowds, highs 56°F, score 94/100
Common questions
Is Olympic crowded in May?
Moderately: May runs 40% of the August peak, averaging 247,409 visits (NPS, 2021–2025).
What is the weather like in Olympic in May?
Average highs of 63°F, lows of 43°F, 6.9″ of precipitation (NOAA 1991–2020 normals, QUINAULT 4 NE, WA US station).
What should I pack for Olympic in May?
Warm mid-layer (fleece or light puffy); Rain shell + pack cover; Waterproof boots — plus navigation and a basic first-aid kit — the full weather-computed list is on this page.
See also: the best national parks to visit in May · Last verified 2026-09-24