Planning a trip to San Francisco in April? You are in luck! The weather is generally good, with an average maximum temperature of +66°F and approximately 8 sunny days. Just be prepared for some rain, as there are usually around 8 rainy days and 36 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Good to know:
April is usually the driest month of the year in San Francisco
Average weather
☀️
+66°F
Avg. max. temperature
+39°F
Min.
+86°F
Max.
36 mm
Total precipitation
78%
Avg. humidity
3 m/s
Avg. wind
8 ☀️
Sunny Days
14 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: San Francisco has good weather in April.
Avionero – A better way to search for flights:
Cheapest prices on the market!
Check all your dates and date combinations in a single search!
Want inspiration, set your dates and find the cheapest destinations!
Saves your searches in the browser so you can easily return to them!
Average temperature in San Francisco in April
Here are the expected maximum, average and minimum temperatures in San Francisco for April based on the historical data.
Last Year
Historical Data
Going from a maximum of +79°F during the day to a minimum of +41°F during the night, the temperature in April averages around +64°F.
The average maximum temperature goes up 5% by the end of the month, compared with the beginning of the month, from +61°F to +63°F.
Is San Francisco warm or cold in April?
San Francisco is typically mild in April.
Maximum temperatures go up compared to the previous month from +63°F to +66°F. The minimum temperature also goes up from +48°F to +50°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how April is compared to other months in San Francisco:
Water temperature in San Francisco in April
Water in San Francisco in April is Cold. It varies from +49°F to +56°F, with an average of +53°F.The air temperature averaging +66°F is higher than the water temperature.
The water temperature in April is one of the coldest of the entire year:
The warmest water temperatures in San Francisco are reached in September, when the average sea temperature rises to +57°F. The coldest water temperatures are in June, with an average of +52°F.
Can you swim in San Francisco in April?
We would not recommend swimming in San Francisco in April, the water is very cold (+53°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in San Francisco in April
San Francisco weather looks like this, on average, in April and the surrounding months.
March
April
May
Avg. temperature
+63°F
+66°F
+68°F
Min. temperature
+36°F
+39°F
+45°F
Max. temperature
+79°F
+86°F
+91°F
Rainfall
89 mm
36 mm
16 mm
Wind
3 m/s
3 m/s
3 m/s
Avg. water temperature
+54°F
+53°F
+53°F
Humidity
80%
78%
79%
Air pressure
1016 HPa
1016 HPa
1014 HPa
Sunny days
5
8
9
Cloudy days
14
14
17
Rainy days
12
8
4
Snowy days
0
0
0
April often has better weather than March.It’s getting warmer as April arrives. The average maximum temperature goes up from +63°F to +66°F during the day.As April arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 89 mm to 36 mm.It feels drier, as humidity decreases from 80% to 78%.The average wind speed doesn’t change much during April, staying around 3 m/s.The good news is there are likely to be more sunny days in April, from 5 to 8.
May brings much the same weather, it remains good.
Wind speed in San Francisco in April based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in San Francisco is gradually increasing during April, going from 1 m/s to 5 m/s over the course of the month.
Rain
Amount of rainfall in mm during April in San Francisco based on historical data.
Last Year
Historical Data
Typically, there is a 10% chance of rain on an average day in April, with total rainfall of approximately 9 mm. The maximum amount of rainfall per day is around 7 mm, which is considered light rain.San Francisco is amazing in April with as little as 3 rainy days on average, so plan adventures in the great outdoors.
Here’s how April is compared with other months in the amount of precipitation, total mm:
San Francisco wettest month is December, where a typical day has a 39% chance of precipitation and 117 mm of rainfall per day. July, on the other hand, is the driest month with a mere 0% chance of precipitation and 0 mm of rainfall per day.
How was the weather last April in San Francisco?
This is the weather in San Francisco in April 2023:
1 April
☁️
+61°F
2 April
☁️
+60°F
3 April
☀️
+57°F
4 April
☀️
+57°F
5 April
☁️
+59°F
6 April
☁️
+61°F
7 April
☁️
+60°F
8 April
☁️
+63°F
9 April
☀️
+70°F
10 April
☀️
+69°F
11 April
☁️
+63°F
12 April
☀️
+60°F
13 April
☀️
+64°F
14 April
☀️
+61°F
15 April
☀️
+59°F
16 April
☀️
+60°F
17 April
☁️
+59°F
18 April
☁️
+58°F
19 April
☀️
+61°F
20 April
☀️
+67°F
21 April
☀️
+74°F
22 April
☁️
+73°F
23 April
☁️
+69°F
24 April
☁️
+70°F
25 April
☁️
+74°F
26 April
☀️
+77°F
27 April
☀️
+79°F
28 April
☁️
+76°F
29 April
☁️
+67°F
30 April
☁️
+63°F
In April 2023 San Francisco had 14 sunny days, 16 cloudy days, and 0 rainy days. The average maximum temperature was +64°F, with an absolute maximum of +79°F and a minimum of +57°F. The average humidity was 78%, with a maximum of 100% and a minimum of 51%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in April?
Climate Change Over the Years
This is how San Francisco climate has changed over the last 43 years.
The climate in San Francisco in April has not changed that much over the last 43 years.
The average temperature was the lowest in 1982 (+65°F) and the highest in 2014 (+70°F). The driest year was 2013 with only 127 mm of rainfall, and the wettest year was 1983 with 1162 mm.
FAQ
Frequently asked questions about the weather in San Francisco in April:
Is April a good time to visit San Francisco?
April is a really good time to go to San Francisco. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit San Francisco.
Can you sunbathe in San Francisco in April?
April has mild temperatures in San Francisco. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in San Francisco in April?
Swimming in San Francisco in April is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is San Francisco rainy in April?
San Francisco is usually dry in April. Plan your packing around outdoor activities and exploring.
Is it sunny in San Francisco in April?
Usually, it’s not very sunny in San Francisco in April, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in San Francisco, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
