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 sea temperature 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
September
Weather in September
Temperature
September's average high-temperature stands at a still refreshing 17.3°C (63.1°F), showing little deviation from August's 16.7°C (62.1°F). During September, Viña del Mar consistently records a temperature low averaging a chilly 8.7°C (47.7°F).Humidity
The months with the highest humidity in Viña del Mar are July through September, with an average relative humidity of 72%.Rainfall
In Viña del Mar, in September, it is raining for 4.2 days, with typically 15mm (0.59") of accumulated precipitation. Throughout the year, there are 33.7 rainfall days, and 178mm (7.01") of precipitation is accumulated.Sea temperature
In September, the average sea temperature is 13.2°C (55.8°F).Note: Beware when you're in 13.2°C (55.8°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The average length of the day in September is 11h and 55min.On the first day of September, sunrise is at 07:02 and sunset at 18:29 -04. On the last day of the month, sunrise is at 07:23 and sunset at 19:48 -03.
Note: On Sunday, 08. September 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 06. April 2025, at 00:00; consequently, the time zone reverts from -03 to -04.
Sunshine
The average sunshine in September is 8.6h.UV index
The months with the lowest UV index are May through October, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the Sun's intensity during midday, it's wise to minimize direct 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
What are the temperatures in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
What is the water temperature in September in Viña del Mar?
What is the average length of the day in September?
When are sunrise and sunset in September?
When does Daylight Saving Time (DST) start in September?
How long on average sun shines in September?
What is the month with the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Viña del Mar, Chile
- Average high temperature in September: 17.3°C
The warmest months (with the highest average high temperature) are January and February (23.3°C).
The month with the lowest average high temperature is July (15.4°C).
- Average low temperature in September: 8.7°C
The month with the highest average low temperature is January (14.7°C).
The coldest month (with the lowest average low temperature) is July (8.3°C).
Average pressure in September
Viña del Mar, Chile
- Average pressure in September: 1019.1mbar
The month with the highest atmospheric pressure is July (1019.5mbar).
The month with the lowest atmospheric pressure is February (1014.4mbar).
Average wind speed in September
Viña del Mar, Chile
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is November (13.6km/h).
The calmest month (with the lowest average wind speed) is May (10.3km/h).
Average humidity in September
Viña del Mar, Chile
- Average humidity in September: 72%
The months with the highest relative humidity are July, August and September (72%).
The month with the lowest relative humidity is April (66%).
Average rainfall in September
Viña del Mar, Chile
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is June (71mm).
The driest months (with the least rainfall) are January and February (0mm).
Average rainfall days in September
Viña del Mar, Chile
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is June (6.8 days).
The month with the least rainy days is February (0.3 days).
Average sea temperature in September
Viña del Mar, Chile
- Average sea temperature in September: 13.2°C
The best month for swimming (with the highest average sea temperature) is February (17.9°C).
The coldest month (with the lowest average sea temperature) is July (13.1°C).
Average daylight in September /
Average sunshine in September
Viña del Mar, Chile
- 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: 8h and 4min
The month with the most sunshine is February (Average sunshine: 9h and 54min).
The month with the least sunshine is June (Average sunshine: 8h and 0min).
Average sunshine days in September
Viña del Mar, Chile
- Average sunshine days in September: 23.9 days
The months with the most sunshine days are January and March (30.3 days).
The month with the least sunshine days is June (22.7 days).
Average UV index in September
Viña del Mar, Chile
- Average UV index in September: 4
The months with the highest UV index are January, February, March, April, November and December (UV index 5).
The months with the lowest UV index are May, June, July, August, September and October (UV index 4).
Average cloud cover in September
Viña del Mar, Chile
- Average cloud cover in September: 25
The month with the most cloud cover is June (Cloud cover 28).
The month with the least cloud cover is February (Cloud cover 7).
Average visibility in September
Viña del Mar, Chile
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May and June (10km).
The months with the lowest visibility are July, August, September, October, November and December (9km).
