Normal weather in San José in September
The weather in San José in September has an average temperature of around 32°C during the day. On average, September sees 177 mm of rain in San José. The wind speed is 3 Beaufort and mainly comes from East.
After August, September in San José starts with a temperature of 32°C and ends around October at 32°C.
The hurricane season in San José lasts from early June to late November.
September averages for San José
 Average temperature | 32°C |
 Highest daytime temperature | 33°C |
| Lowest daytime temperature | 31°C |
 Total rainfall | 177 mm |
| Rainy days | 19 days |
Temperature per day in September in San José
This graph shows the average daily maximum temperatures in September in San José, indicated in degrees Celsius.
Precipitation per day in September in San José
This graph shows the average daily precipitation in September in San José, indicated in millimeters.
UV index per day in September in San José
This graph shows the average daily UV index in September in San José.
Yearly temperature in September in San José
This graph shows the average yearly temperature in September in San José, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in San José
This graph shows the average yearly precipitation in millimeters in September in San José, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
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Average weather in San José per month
Click on a month below to see in detail how the weather typically is in San José and what to expect. Based on the historical weather data of San José, you can view the average temperature, precipitation, wind, and UV index for each day of the month.