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
Entering September, the average high-temperature is recorded at a still moderately hot 23.5°C (74.3°F), exhibiting a minimal shift from August's 24°C (75.2°F). Nighttime temperature lowers to an average of 12°C (53.6°F) in September.Humidity
August and September, with an average relative humidity of 75%, are the least humid months.Rainfall
The months with the least rainfall in La Unión are June and September Rain falls for 16.5 days and accumulates 75mm (2.95") of rain.Daylight
In La Unión, the average length of the day in September is 12h and 8min.On the first day of the month, sunrise is at 05:58 and sunset at 18:10. On the last day of September, sunrise is at 05:51 and sunset at 17:56 -05.
Sunshine
The average sunshine in September is 10.4h.UV index
The months with the highest UV index in La Unión, Colombia, are January through September and December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the average September temperature in La Unión?
What are the least humid months in La Unión?
What is the average humidity in September in La Unión?
What is the driest month in La Unión?
How many days does it rain in September in La Unión?
What is the average length of the day in September in La Unión?
When is the sunrise / sunset in September in La Unión?
How many hours of sunshine does La Unión have in September?
When is the highest UV index in La Unión?
How high is the UV index in September in La Unión?
Average temperature in September
La Unión, 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
La Unión, 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
La Unión, 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
La Unión, 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
La Unión, 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
La Unión, 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
La Unión, 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 54min).
- 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
La Unión, 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
La Unión, 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
La Unión, 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
La Unión, 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).
La Unión, Colombia
Weather forecast for your location
2. Allow the app to use your location
