Mill Valley in April
Great time to visit
April hits the sweet spot with gorgeous weather and manageable crowds. The hills are still green from winter rains, and hiking conditions couldn't be better.
Weather
April delivers some of Mill Valley's most pleasant weather. Daytime highs reach the low 70s with crisp nights in the 50s. Rain becomes sporadic, and morning fog starts its summer pattern of burning off by noon.
21°C high10°C low5 rain days
Crowds & Cost
moderate crowds
~$220/day average
Events & Festivals
- •Earth Day events at Muir Woods
- •Mill Valley Film Festival spring screenings
April Tips
- •Perfect hiking weather means popular trails like Dipsea get busy on weekends
- •Restaurants start opening patios - try outdoor seating at Plazza
- •Morning fog clears early, making this ideal for photography
All Months
April through October gives you the best weather in Mill Valley. Summer means no rain but also means fog that rolls in most afternoons — pack layers even in July. May and September hit the sweet spot with warm days and clear skies. The Mill Valley Film Festival happens in October, bringing crowds and higher hotel rates. Winter brings rain that can last for days, but also fewer tourists and green hills that photographers love. Spring wildflowers bloom best in March and April along the Dipsea Trail. Avoid Memorial Day and Labor Day weekends unless you enjoy fighting for parking spots.
Mill Valley Scores
Solo
6/10
Couples
7/10
Families
8/10
Adventure
6/10
Budget
4/10
Luxury
6/10
BUILD YOUR MILL VALLEY PLAN
Insider picks, smart timing, and a plan ready when you are.