April is one of the more pleasant months to visit. Rain drops to a few days on average, the parks are green and flowering, and summer crowds have not arrived yet.
In this guide
This guide is part of our San Francisco weather by month hub. For trip planning, see the San Francisco visitors guide.
April averages, San Francisco Downtown
- Average high 63°F
- Average low 50°F
- Average rainfall 1.6 inches
- Rainy days 4 (days with at least 0.1 inch)
- Source NOAA 1991 to 2020 climate normals
What the weather is like
Days are mild and often bright, though wind picks up in the afternoons, especially near the ocean and the Golden Gate. Late-month fog can start to show up along the coast.
These averages come from the downtown station. Neighborhoods near Ocean Beach are often cooler and grayer, and the Mission and SoMa are often warmer. In April the station records about 4 days with measurable rain in an average year.
What to pack
Bring a light jacket, a warm layer for the evening and comfortable walking shoes. Sunglasses and sunscreen are worth packing too. Our San Francisco packing list covers the basics for every season.
What is on in April
The Northern California Cherry Blossom Festival fills Japantown over two weekends in April. See San Francisco events in April for dates and details.
Planning around the weather
Compare April with the months either side: March and May. If you are still choosing dates, read the best time to visit San Francisco.
Official resources: NOAA U.S. climate normals, National Weather Service Bay Area forecast.
Frequently asked questions
How warm is San Francisco in April?
The average high at the downtown station is 63°F and the average low is 50°F.
Can you swim in the ocean in April?
The Pacific off San Francisco is cold all year, and currents at Ocean Beach are dangerous. Most people stick to walking on the sand.
Photo credits
Featured image: Amanda Walker / Wikimedia Commons, CC BY-SA 2.0.