San Francisco weather in April 2026

April mornings in San Francisco carry a damp chill—expect highs around 16.6°C (62°F) and lows of 10.2°C (50°F), with that particular Bay Area bite that makes you reach for layers by 7am. Rainfall averages 39mm across roughly five days, so you'll see scattered showers rather than sustained downpours. The flip side: you're looking at 11.3 hours of sunshine daily, meaning crisp, clear afternoons that bring out the city's best light. The combination creates that classic San Francisco texture—fog burns off by noon, revealing brilliant skies, then cool breezes return by evening.

Spring is in motion across the city. The Ferry Building Marketplace fills with weekend crowds hunting for fresh produce and artisanal goods. Cherry blossoms peak in Golden Gate Park around mid-April, drawing photographers and families. Streets feel moderately busy but not yet summer-saturated; you can actually move through North Beach without shoulder-checking every five steps. Hotel rates climb gently from winter but haven't hit peak season pricing. Locals emerge from winter hibernation, patios fill with people in sweaters nursing coffee, and the energy shifts from introspective to outward-facing.

Over the past decade, April has remained consistently mild, with temperatures holding steady around this 16–17°C range. 2026 aligns with historical norms—no dramatic warming trend or surprise cold snaps recorded in recent years. The rainfall pattern is typical: a handful of wet days clustered around the month, never overwhelming. This stability makes April one of the more predictable months for planning.

April suits photographers, nature walkers, and anyone who dislikes crowds but wants genuine spring energy. Hikers benefit from dry trail conditions and wildflower blooms in the Marin Headlands. Budget travelers appreciate the shoulder-season pricing on accommodation and restaurants before summer markup kicks in. Pack layers and a compact rain jacket—that's the April formula for 2026.