September weather forecastTrelew, Argentina
September
Weather in September
By the time September arrives in Trelew, spring is in full swing. The temperatures rise further than those observed in August. The city also experiences a decrease in humidity, signifying drier conditions compared to the previous month. Despite the decreased humidity, the frequency of rainfall remains the same as in August. Generally, bright sunshine and good visibility characterize the weather in September, making it an excellent time for outdoor activities.Temperature
At the onset of September, Trelew records an average high-temperature of a still mild 15.5°C (59.9°F), showing little deviation from the preceding month. An average low-temperature of 8.1°C (46.6°F) marks the month of September in Trelew, Argentina.Humidity
In Trelew, the average relative humidity in September is 48%.Rainfall
In Trelew, during September, the rain falls for 5 days and regularly aggregates up to 6mm (0.24") of precipitation. Throughout the year, there are 64.5 rainfall days, and 108mm (4.25") of precipitation is accumulated.Snowfall
January through June, September through December are months without snowfall in Trelew.Daylight
The average length of the day in September is 11h and 49min.On the first day of September in Trelew, sunrise is at 07:46 and sunset at 18:55. On the last day of the month, sunrise is at 06:54 and sunset at 19:27 -03.
Sunshine
In Trelew, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. 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
Average temperature in September
Trelew, Argentina
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (10.9°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is January (17.1°C).
The coldest month (with the lowest average low temperature) is July (4.9°C).
Average pressure in September
Trelew, Argentina
- Average pressure in September: 1015.1mbar
The month with the highest atmospheric pressure is September (1015.1mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Trelew, Argentina
- Average wind speed in September: 22.4km/h
The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is May (20.7km/h).
Average humidity in September
Trelew, Argentina
- Average humidity in September: 48%
The month with the highest relative humidity is July (58%).
The months with the lowest relative humidity are January and December (36%).
Average rainfall in September
Trelew, Argentina
- Average rainfall in September: 6mm
The wettest months (with the highest rainfall) are March and June (16mm).
The driest month (with the least rainfall) is November (5mm).
Average rainfall days in September
Trelew, Argentina
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is July (7.5 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Trelew, Argentina
- Average snowfall in September: 0mm
The months with the highest snowfall are July and August (1mm).
The months with the least snowfall are January, February, March, April, May, June, September, October, November and December (0mm).
Average snowfall days in September
Trelew, Argentina
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are July and August (0.3 days).
The months with the least snowfall days are January, February, March, April, May, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Trelew, Argentina
- Average daylight in September: 11h and 48min
The month with the longest days is December (Average daylight: 15h and 18min).
The month with the shortest days is June (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is December (Average sunshine: 12h and 24min).
The month with the least sunshine is June (Average sunshine: 6h and 30min).
Average sunshine days in September
Trelew, Argentina
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is June (21.3 days).
Average UV index in September
Trelew, Argentina
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June, July and August (UV index 3).
Average cloud cover in September
Trelew, Argentina
- Average cloud cover in September: 27
The month with the most cloud cover is July (Cloud cover 29).
The month with the least cloud cover is January (Cloud cover 14).
Average visibility in September
Trelew, Argentina
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
