Mount Rainier in August: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 65/100 · #5 of 12 months
August is peak season — the 2nd-busiest month of the year, at Mount Rainier National Park: crowds run 95% of the July peak (398,276 average visits). Weather: highs average 64°F and lows 45°F, with 1.6″ of precipitation and 14.3 hours of daylight. Computed from NPS and NOAA data.
Planning Mount Rainier? Pack a hiking guide: Best Easy Day Hikes Mount Rainier (Falcon) on Amazon. · affiliate link, VisitWhen earns from qualifying purchases
Bring for Mount Rainier in August
- Sturdy, broken-in hiking bootsSee it on AmazonWhy: every park, every month.
- Water bottles for the daySee it on AmazonWhy: hydration is one of the NPS Ten Essentials.
- HeadlampSee it on AmazonWhy: illumination is one of the NPS Ten Essentials.
Affiliate links: VisitWhen earns from qualifying purchases, at no extra cost to you. Prices can change; Amazon shows the current one.
Mount Rainier in August: what the park service says
August is one of Mount Rainier's warmest, driest months, with Ohanapecosh near 81°F on an average afternoon and Paradise in the low 60s, though rain is possible any day. Parking is limited in many areas, and the park suggests weekday visits to beat the crowds. Carry extra clothing, rain gear and a tent if you head into the backcountry, since mountain weather can change quickly at any time of year.
Source: NPS 1, NPS 2, checked 2026-11-05.
Crowds in August
Mount Rainier averages 398,276 recreation visits in August — 95% of what July, the peak month, draws. That crowd level sets the tone for parking, permits and lodging — book early and start days at dawn.
Weather & daylight
Days are pleasant (highs average 64°F), and nights stay mild (lows average 45°F). It is typically dry (1.6″ of precipitation). Mid-month daylight runs 14.3 hours.
NOAA 1991–2020 monthly normals, station RAINIER PARADISE RS, WA US (4 mi from park coordinates, 5,427 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of August.
What to pack for Mount Rainier in August
Computed from the month's weather normals above — not a generic list.
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
As an Amazon Associate, VisitWhen earns from qualifying purchases. Gear names above link to Amazon searches or to a specific product — we don't show or set prices; you always see Amazon's current price.
Want quieter or kinder conditions? The computed best months for Mount Rainier are May and June.
Also at their best in August
Other parks whose computed August verdict is a best window — same NPS × NOAA formula:
- Guadalupe Mountains in August — 28% of peak crowds, highs 84°F, score 80/100
- Lassen Volcanic in August — 56% of peak crowds, highs 78°F, score 77/100
- Bryce Canyon in August — 81% of peak crowds, highs 78°F, score 68/100
- Redwood in August — 85% of peak crowds, highs 66°F, score 67/100
Common questions
Is Mount Rainier crowded in August?
Yes — August runs 95% of Mount Rainier's peak, averaging 398,276 recreation visits (NPS, 2021–2025). See every month at Mount Rainier.
What is the weather like in Mount Rainier in August?
Average highs of 64°F, lows of 45°F, 1.6″ of precipitation (NOAA 1991–2020 normals, RAINIER PARADISE RS, WA US station). Compare it with other national parks in August.
What should I pack for Mount Rainier in August?
Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page. Going in September instead? Mount Rainier in September has its own list.
See also: the best national parks to visit in August · Last verified 2026-09-24