August is a good month at Mount Rainier — it ranks 6th of the twelve here. Expect about 5% fewer visitors than July, the park's peak — 398,276 visits on average. Days run around 64°F by afternoon and 45°F at night, with 14.2 hours of daylight.
August against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| August (this page) | Good | 398,276 | −5% | 64°F | 45°F | — | 14.2 h |
| May (best) | Excellent | 85,473 | −80% | 48°F | 33°F | — | 15 h |
| July (peak crowds) | Good | 420,918 | peak | 62°F | 44°F | — | 15.5 h |
Weather figures are for the Paradise area (5,400 ft) — the Rainier Paradise RS station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is August a good time to visit Mount Rainier?
Yes — a solid month, if not the very best. August ranks 6 of 12 at Mount Rainier on crowds, weather, daylight, and access together.
How crowded is Mount Rainier in August?
About 398,276 recreation visits on average — 5% below July, the park's peak.
How warm is Mount Rainier in August?
Average highs around 64°F and lows around 45°F at the Rainier Paradise RS station.
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