Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The average high-temperature is a still moderately hot 23.5°C (74.3°F) in September, hardly different from the 24°C (75.2°F) recorded in August. The average nighttime temperature in San José lowers to a fresh 12°C (53.6°F) throughout September.Humidity
August and September, with an average relative humidity of 75%, are the least humid months in San José.Rainfall
The months with the least rainfall are June and September Rain falls for 16.5 days and accumulates 75mm (2.95") of rain.Daylight
In San José, the average length of the day in September is 12h and 9min.On the first day of the month, sunrise is at 05:56 and sunset at 18:09. On the last day of September, sunrise is at 05:50 and sunset at 17:55 -05.
Sunshine
In San José, the average sunshine in September is 10.4h.UV index
January through September and December, with an average maximum UV index of 5, are months with the highest UV index in San José, Colombia. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 5 in September transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the usual temperature for San José in September?
What is the least humid month in San José?
What is the average humidity in September in San José?
What is the driest month in San José?
How many days does it rain in September in San José?
How many hours of daylight does San José have in September?
What time are sunrise and sunset in September in San José?
How long on average sun shines in September in San José?
When is the highest UV index in San José?
What is the UV index reading in September in San José?
Average temperature in September
San José, Colombia
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (24°C).
The month with the lowest average high temperature is November (21.4°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is April (12.9°C).
The coldest month (with the lowest average low temperature) is January (11.7°C).
Average pressure in September
San José, Colombia
- Average pressure in September: 1013.5mbar
The months with the highest atmospheric pressure are June and July (1013.6mbar).
The month with the lowest atmospheric pressure is February (1012.5mbar).
Average wind speed in September
San José, Colombia
- Average wind speed in September: 2.9km/h
The windiest month (with the highest average wind speed) is July (3.4km/h).
The calmest months (with the lowest average wind speed) are March and April (2.7km/h).
Average humidity in September
San José, Colombia
- Average humidity in September: 75%
The month with the highest relative humidity is November (83%).
The months with the lowest relative humidity are August and September (75%).
Average rainfall in September
San José, Colombia
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is April (258mm).
The driest months (with the least rainfall) are June and September (75mm).
Average rainfall days in September
San José, Colombia
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is April (27.5 days).
The months with the least rainy days are June and July (16.3 days).
Average daylight in September /
Average sunshine in September
San José, Colombia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 18min).
Average sunshine days in September
San José, Colombia
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is July (13 days).
The months with the least sunshine days are April and November (1.5 days).
Average UV index in September
San José, Colombia
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September and December (UV index 5).
The months with the lowest UV index are October and November (UV index 4).
Average cloud cover in September
San José, Colombia
- Average cloud cover in September: 35
The month with the most cloud cover is April (Cloud cover 50).
The months with the least cloud cover are January and August (Cloud cover 34).
Average visibility in September
San José, Colombia
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (8km).
The month with the lowest visibility is November (7km).
San José, Colombia
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