What’s the weather like in San Francisco in May?In the month of May, San Francisco is mild and dry, making this a great time of year to explore the city’s many cultural sights. As summer gets closer you can expect more sun and less cloud cover in the city, but if you want to go swimming in the bay the sea’s still quite cold. The weather can be changeable in San Francisco, so whatever time of year you visit it’s worth packing plenty of layers, a light rain jacket and high factor sun cream.
AveragesIn the daytime, temperatures in San Francisco average around 130C with lows of 100C and highs of 180C. With just 18mm of rain expected during the month, showers are uncommon, but it’s still worth bringing a waterproof jacket in case of light rain. At the start of the month, sunrise is around 6.15am and the skies are expected to have around 50% cloud cover.