Temperatures in April
It's hot in April in San Francisco with an average temperature of 34°C. Temperatures this month range from a low of 33°C to a high of 35°C. At night, you can expect temperatures between 20°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Francisco in April. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of April
The month of April starts in San Francisco with hot temperatures, averaging around 34°C during the day and nights close to 21°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Mid-April
By mid-April, the average daytime temperature rises to around 35°C, with nights close to 21°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of April
By the end of April, the average daytime temperature in San Francisco will be around 34°C, with nights close to 22°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Precipitation in April
In April, there is an average of 88 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 25% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in April for San Francisco. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
San Francisco in April |
London | ||
|---|---|---|---|
 Average Temperature |
34°C | 15°C | |
 High Temp |
35°C | 18°C | |
| Low Temp |
33°C | 12°C | |
 Total Precipitation |
88 mm | 29 mm | |
| Rainy Days |
8 days | 7 days | |
March
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is April a good time to visit San Francisco?
April is a great month to be in San Francisco for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for San Francisco in April
With 37°C, San Francisco hit the highest temperature in the last 10 years in April 2020. The lowest daytime temperature in this month was 27°C in 2014. The extreme night temperatures ranged from a low of 15°C to a high of 24°C.
Check out the climate of San Francisco for all months and discover the best travel time
Daily Temperature in April in San Francisco
This chart shows the average daily temperatures, both day and night, for each day in April in San Francisco, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in April in San Francisco
The chart below shows the average daily precipitation in April for San Francisco, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for April, you can expect around 8 days of rain in San Francisco.
Daily UV Index in April in San Francisco
This chart shows the average daily UV index in April in San Francisco, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in April in San Francisco Over the Years
This chart shows the average temperature in April in San Francisco, measured in degrees Celsius, over the past years.
Total Precipitation in April in San Francisco Over the Years
This chart shows the average precipitation in April in San Francisco, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in April for San Francisco
Click on a specific day in April for detailed info on the typical weather on that day in San Francisco. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in April in San Francisco
Have you been to San Francisco in April?
Share your weather experience in April in San Francisco.
Average Weather in San Francisco by Month
Click on a month below to see detailed weather info for San Francisco. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of San Francisco for all months at once
