San Francisco County weather
Our guide to the weather in San Francisco County during April
We've looked at the most up-to-date weather data for San Francisco County, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about San Francisco County weather in April.
What's the temperature like in San Francisco County during April?
The temperature reaches around 18℃ during the daytime in April, falling away to 10℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in San Francisco County during April?
On average, there will be 2 rainy days during the month, amounting to 22.7mm in total. That's much drier than we see in England during August, and therefore not something to be concerned about. You're not likely to see a thunderstorm during your trip.
Is it windy in San Francisco County during April?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in April. With moderate air temperatures, any breeze will feel cool.
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