What to Wear at Muir Woods
Muir Woods makes its own weather. The canyon runs 10 to 15°F cooler than San Francisco, the redwood canopy traps fog and damp, and the forest floor stays cool and shaded even on a hot summer afternoon. Dress for a cool, damp forest and you will be comfortable. Dress for the city you left and you will be cold.
The one rule: dress in layers
The single most useful thing you can do is wear three light layers instead of one heavy one. A base layer (t-shirt or long-sleeve), a warm mid-layer (fleece or light sweater), and a wind- and water-resistant shell will cover almost any condition Muir Woods throws at you. You can shed a layer on the sunny upper ridge and add it back the moment you drop into the shaded canyon. Cotton sweatshirts feel cozy until they get damp from fog or sweat, then stay cold against your skin. A synthetic or wool mid-layer is a better choice.
What to wear by season
Opening time is the same year-round, but conditions change a lot. Use this as a starting point and check the Muir Woods weather guide before you go.
| Season | Typical forest temps | What to wear |
|---|---|---|
| Winter (Dec–Feb) | 40–55°F, wet | Warm mid-layer, waterproof rain shell, waterproof shoes, and a hat. The wettest, coldest months. |
| Spring (Mar–May) | 45–60°F, damp | Layers plus a packable rain jacket. Trails can still be muddy. Bright green and uncrowded. |
| Summer (Jun–Aug) | 50–65°F, foggy | Long pants and a warm layer even when the city is hot. Morning fog is slow to burn off under the canopy. |
| Fall (Sep–Nov) | 50–60°F | The most forgiving season. Light layers; add a shell in late fall as the rains return. |
Footwear
The paved main loop is flat and stroller-friendly, so any comfortable closed-toe shoe works there. If you plan to step onto the dirt canyon-wall trails (Hillside, Fern Creek, Dipsea, Ben Johnson), wear shoes with real tread. The dirt holds moisture and the wooden bridges and boardwalk edges get slick, especially in winter. Smooth-soled sneakers and sandals are the most common footwear mistake here. Waterproof shoes or boots are worth it from November through April.
Rain gear: November through April
Muir Woods is a temperate rainforest that gets more than 40 inches of rain a year, almost all of it in the cool months — and a rainy day is one of the best times to visit. Bring a real waterproof shell with a hood. Leave the umbrella at home: the boardwalks are narrow, the canopy funnels drips unpredictably, and wind pushes the rain sideways. A small dry bag or pack cover keeps your phone and camera safe, and a dry shirt waiting in the car makes the drive back a lot better.
Sun and wind on the upper trails
Deep in the canyon the redwoods block most of the sun, so sunscreen is rarely the priority on the main loop. But the trails that climb out of the forest — the Dipsea, the Coast View / Cardiac Hill loop, the Ocean View Trail — break onto exposed, grassy ridges with full sun and coastal wind. If your plan includes the high trails, carry sunscreen, sunglasses, a brimmed hat, and a wind layer.
What you can leave at home
You do not need heavy mountaineering boots for the main loop, trekking poles for a short visit, or anything formal for any reason. There is no dress code at Muir Woods. It is a walk in the woods: comfortable, practical, weather-ready clothing is all it asks.
Frequently Asked Questions
Do I need to dress warmly at Muir Woods in summer?
Yes. The canyon runs 10 to 15°F cooler than San Francisco, and coastal fog keeps the forest damp and cool through the morning. Bring a warm layer even on a hot day in the city.
Can I wear sandals or flip-flops?
You can on the paved main loop, but closed-toe shoes with grip are far safer if you step onto the dirt trails, which stay damp and can be slick.
Should I bring an umbrella when it rains?
No. A waterproof jacket with a hood works far better on the narrow boardwalks than an umbrella, which is awkward under the canopy and useless in wind.
Is there anywhere to change or store clothing?
No. There is no changing area and no lockers. Keep a spare layer and a dry shirt in your car for after the walk.