Normal weather in San José in September
The weather in San José in September has an average temperature of around 26°C during the day. On average, September sees 164 mm of rain in San José. The wind speed is 3 Beaufort and mainly comes from Southeast.
After August, September in San José starts with a temperature of 26°C and ends around October at 26°C.
The hurricane season in San José lasts from early June to late November.
September averages for San José
 Average temperature | 26°C |
 Highest daytime temperature | 28°C |
| Lowest daytime temperature | 24°C |
 Total rainfall | 164 mm |
| Rainy days | 21 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.
Rainfall per day in September in San José
This graph shows the average daily rainfall 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 rainfall in September in San José
This graph shows the average yearly rainfall in millimeters in September in San José, over the past years.
Average daily weather in September
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Experiences with the weather in September in San José
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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, rainfall, wind, and UV index for each day of the month.