Normal weather in San Juan in May
The weather in San Juan in May has an average temperature of around 7°C during the day. On average, May sees 29 mm of rain in San Juan. The total amount of snow in May is about 1,3 cm of snow. The wind speed is 5 Beaufort and mainly comes from Southwest.
After April, May in San Juan starts with a temperature of 7°C and ends around June at 6°C.
May averages for San Juan
 Average temperature | 7°C |
 Highest daytime temperature | 9°C |
| Lowest daytime temperature | 4°C |
 Total rainfall | 29 mm |
| Rainy days | 14 days |
 Total snowfall | 1,3 cm |
| Snowy days | 1 day |
Temperature per day in May in San Juan
This graph shows the average daily maximum temperatures in May in San Juan, indicated in degrees Celsius.
Precipitation per day in May in San Juan
This graph shows the average daily precipitation in May in San Juan, indicated in millimeters.
Snowfall per day in May in San Juan
This graph shows the average daily snowfall in May in San Juan, indicated in centimeters.
UV index per day in May in San Juan
This graph shows the average daily UV index in May in San Juan.
Yearly temperature in May in San Juan
This graph shows the average yearly temperature in May in San Juan, measured in degrees Celsius, over the past years.
Yearly total precipitation in May in San Juan
This graph shows the average yearly precipitation in millimeters in May in San Juan, over the past years.
Yearly snowfall in May in San Juan
This graph shows the average yearly snowfall in May in San Juan, measured in centimeters, over the past years.
Average daily weather in May
Click on a day to get more information about the average weather on that day.
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Average weather in San Juan per month
Click on a month below to see in detail how the weather typically is in San Juan and what to expect. Based on the historical weather data of San Juan, you can view the average temperature, precipitation, wind, and UV index for each day of the month.