The weather in San Francisco is variable, and the sides of the van are open, so dress accordingly. April and May, as well as September and October, tend to be the warmest months. June, July, and August are foggy and colder than you might expect. The rainy season runs from November through to March.

All year round, sunglasses and sunblock are recommended. Dress in layers that you can add or subtract over the course of the day. There are blankets and heavy jackets on the bus for your use as well.

The trails at Muir Woods are paved, but you will have the option to hike on unpaved trails. Please wear comfortable, appropriate footwear.