Crater Lake in May: Crowds, Weather & What to Pack
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May is one of the best months of the year to visit Crater Lake National Park: crowds run 22% of the July peak (36,245 average visits). Weather: highs average 49°F and lows 29°F, with 3.6″ of precipitation and 14.6 hours of daylight. Roads and services are only partly open this month — see the access note below. Computed from NPS and NOAA data.
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Bring for Crater Lake in May
- Insulated jacket, beanie and glovesSee it on AmazonWhy: nights average 29°F, below freezing.
- Rain shell + pack coverSee it on AmazonWhy: 3.6″ of precipitation is normal this month.
- Traction devices (microspikes) and gaitersSee it on AmazonWhy: 15″ normal snowfall.
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Crowds in May
Crater Lake averages 36,245 recreation visits in May — 22% of what July, the peak month, draws. Plan lodging and entries with that in mind — crowds are thin by this park's standards.
Weather & daylight
Expect cool days (highs average 49°F), and nights drop below freezing (lows average 29°F). Average precipitation is 3.6″ for the month. Normal snowfall is 15″ — expect snow on the ground. Mid-month daylight runs 14.6 hours.
NOAA 1991–2020 monthly normals, station CRATER LAKE NPS HQ, OR US (1 mi from park coordinates, 6,485 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.
What to pack for Crater Lake in May
Computed from the month's weather normals above — not a generic list.
- Insulated jacket, beanie and gloves — nights average 29°F, below freezing
- Rain shell + pack cover — 3.6″ of precipitation is normal this month
- Traction devices (microspikes) and gaiters — 15″ normal snowfall (compare other options)
- Insulated, waterproof boots — plus navigation and a basic first-aid kit — 15″ of snow 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 Crater Lake crowded in May?
No — May is one of the quieter months: 22% of the July peak, averaging 36,245 visits (NPS, 2021–2025).
What is the weather like in Crater Lake in May?
Average highs of 49°F, lows of 29°F, 3.6″ of precipitation (NOAA 1991–2020 normals, CRATER LAKE NPS HQ, OR US station).
What should I pack for Crater Lake in May?
Insulated jacket, beanie and gloves; Rain shell + pack cover; Traction devices (microspikes) and gaiters — the full weather-computed list is on this page.
Is everything open at Crater Lake in May?
Rim Drive and the north entrance are typically closed November–June; the south entrance and Rim Village stay open year-round for snow-season lake views. Always check the park's live NPS alerts for current conditions.
See also: the best national parks to visit in May · Last verified 2026-09-24