El SalvadorThe weather in May in San Francisco
It's hot in May in San Francisco with an average temperature of 33°C. Temperatures this month range from a low of 31°C to a high of 34°C. At night, you can expect temperatures between 21°C and 22°C.
Looking for sun? May isn’t a good month to be in San Francisco. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for San Francisco, El Salvador. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 39°C in 2023, San Francisco reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 25°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 17°C to a highest value of 24°C.
Rainfall amount
In May, there is an average of 305 mm of precipitation, spread over 28 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Daily weather in May for San Francisco
Click on any day in May to get detailed info about the usual weather on that day in San Francisco. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| San Francisco | New York | |
|---|---|---|
| Average temperature | 33°C | 22°C |
| Max. temperature | 34°C | 28°C |
| Min. temperature | 21°C | -5°C |
| Total precipitation | 305 mm | 105 mm |
| Rainy days | 28 days | 14 days |
Start of May
The month of May starts in San Francisco with hot temps, averaging around 34°C during the day and nights around 22°C.
Mid May
By mid-May, daytime temps stay steady at around 34°C, with nights around 22°C. There’s a high chance of precipitation during this time.
End of May
By the end of May, the average daytime temperature in San Francisco is around 32°C, while nighttime temps are about 22°C. There’s a significant chance of many days with precipitation.
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in San Francisco runs from June to November.
Check out the climate of San Francisco for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in San Francisco, El Salvador. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in San Francisco
Temperature in May in San Francisco over the years
Precipitation charts
These charts show the average amount of precipitation in May in San Francisco, El Salvador. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in San Francisco
Total precipitation in May in San Francisco over the years
Daily UV index in May in San Francisco
This chart shows the average daily UV index in May 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.
Weather experiences in May in San Francisco
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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.