Best time to visit Sequoia.

Crowd score

Formula: 100 − (this month's visits ÷ park's peak month visits) × 100. Each park scored against its own peak, not against other parks.

Source: NPS Visitor Use Statistics Data Package 2025, Recreation Visits (TRV), 5-year monthly mean (2021-2025). Reproduce these numbers on the NPS IRMA Stats portal.

Reading it: July at Sequoia reads 0 (peak). February reads 79 (quietest). A 50 means about half the park's peak crowd.

Weather score

Formula: weatherScore = round(max(0, min(100, dayComfort − precipPenalty − snowPenalty − freezePenalty))). The piecewise day-comfort function is continuous at every boundary.

• Day comfort: tmax < 50°F → max(10, (tmax − 20) × 2) (cold tail); 50–60°F → 60 + (tmax − 50) × 4 (ramp to 100); 60–78°F → 100 (plateau); 78–85°F → 100 − (tmax − 78) × 5 (ramp to 65); > 85°F → max(30, 65 − (tmax − 85) × 5) (hot tail).
• Precip penalty: max(0, prcpIn − 1.5) × 8; kicks in above 1.5 in / month.
• Snow penalty: snowIn × 2.5. If the selected station does not publish a snowfall normal, the score applies no snow penalty and labels snowfall as unavailable.
• Night-freeze penalty: max(0, 32 − tmin) × 1.5 when tmin < 32°F.

Source: NOAA NCEI U.S. Climate Normals 1991-2020, station Lodgepole, CA (USC00045026, 6,735 ft).

Caveat: The Lodgepole station sits at about 6,735 ft in the park's main sequoia corridor, roughly 2 miles from Giant Forest and the General Sherman Tree. These numbers represent where visitors actually spend their time (the giant sequoia groves, 6,500-7,000 ft). The Ash Mountain foothills entrance sits near 1,700 ft and runs far hotter: NPS gives the foothills an average July high of 97°F, versus 76°F at Lodgepole. The Mineral King campgrounds sit higher still, at about 7,500 ft. Use Lodgepole for the groves, and expect the foothills drive to be much warmer in summer.

Access score

Formula: For each named park road, count it open if its typical operating window covers that month. Score = round((sum of weights of open roads / sum of all weights) x 100). Where a park has a partial winter access mode, the profile documents that assumption in its access notes.

Route weights at Sequoia:

• Generals Highway (the main artery): Open year-round · chains frequently required in winter
• Mineral King Road: Open ~late May → October
• Moro Rock / Crescent Meadow Road: Not plowed in winter · open late spring → fall
• Crystal Cave: Guided tours · generally mid-May to late September
• Entry, fees, and passes: Year-round entry · no timed entry
• Lodging: Wuksachi Lodge in-park · Three Rivers and Visalia gateway
• Bears and food storage: Year-round · food-storage lockers required
• Kings Canyon connection: Grant Grove year-round · Cedar Grove ~late April → mid-November

Editorial methodology: the route weights are chosen by our editors from NPS road and lodge operating dates and the park's own access caveats below the score table.

Caveat: The score reflects wheeled-vehicle road access only. Backcountry, hiking, lodging, shuttle, and other service availability are not directly included unless the park profile states otherwise.

Why no combined score?

A combined "best month" number forces a weighting: how much do you care about crowds vs. weather vs. access? Those weights are personal. A photographer optimizing for golden light weights differently than a parent locked to school break weights differently than a winter visitor with a 4WD. We show the inputs and let you decide. Use the per-month grid above to navigate to a deeper page.