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
September's onset in Treinta y Tres records a minor alteration in the average high-temperature to a still comfortable 19.2°C (66.6°F) from August's 17.7°C (63.9°F). Treinta y Tres observes an average low-temperature of 9.2°C (48.6°F) during September.Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 11.9 days. Throughout September, 75mm (2.95") of precipitation is accumulated. In Treinta y Tres, during the entire year, the rain falls for 139.1 days and collects up to 799mm (31.46") of precipitation.Daylight
In Treinta y Tres, the average length of the day in September is 11h and 54min.On the first day of the month, sunrise is at 06:53 and sunset at 18:20. On the last day of September, sunrise is at 06:14 and sunset at 18:39 -03.
Sunshine
The average sunshine in September is 6.9h.UV index
In Treinta y Tres, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Treinta y Tres have in September?
What is the UV index reading in September?
Average temperature in September
Treinta y Tres, Uruguay
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is January (29.8°C).
The month with the lowest average high temperature is July (15.3°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is February (17.5°C).
The coldest month (with the lowest average low temperature) is July (7.2°C).
Average pressure in September
Treinta y Tres, Uruguay
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in September
Treinta y Tres, Uruguay
- Average wind speed in September: 15.4km/h
The windiest months (with the highest average wind speed) are September and October (15.4km/h).
The calmest month (with the lowest average wind speed) is May (12.6km/h).
Average humidity in September
Treinta y Tres, Uruguay
- Average humidity in September: 81%
The months with the highest relative humidity are May and July (82%).
The month with the lowest relative humidity is January (68%).
Average rainfall in September
Treinta y Tres, Uruguay
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is October (99mm).
The driest months (with the least rainfall) are March and April (44mm).
Average rainfall days in September
Treinta y Tres, Uruguay
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is January (13.2 days).
The month with the least rainy days is June (9.6 days).
Average daylight in September /
Average sunshine in September
Treinta y Tres, Uruguay
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is December (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 5h and 36min).
Average sunshine days in September
Treinta y Tres, Uruguay
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is February (13.6 days).
Average UV index in September
Treinta y Tres, Uruguay
- Average UV index in September: 4
The months with the highest UV index are January, February, March and December (UV index 6).
The month with the lowest UV index is May (UV index 3).
Average cloud cover in September
Treinta y Tres, Uruguay
- Average cloud cover in September: 42
The month with the most cloud cover is September (Cloud cover 42).
The month with the least cloud cover is December (Cloud cover 28).
Average visibility in September
Treinta y Tres, Uruguay
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Treinta y Tres, Uruguay
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