ChileThe weather in September in Valparaíso
It's cool to moderate in September in Valparaíso with an average temperature of 18°C. Temperatures this month range from a low of 16°C to a high of 19°C. At night, you can expect temperatures between 8°C and 10°C.
Looking for great weather? September is a good time to be in Valparaíso. The temperatures are nice, and there’s little chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Valparaíso, Chile. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2020, Valparaíso reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 11°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 13°C.
Water temperature
The water temperature at Valparaíso is 15°C this month. This is probably too cold to swim without protective gear.
Rainfall amount
In September, there is an average of 17 mm of precipitation, spread over 3 days. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for Valparaíso
Click on any day in September to get detailed info about the usual weather on that day in Valparaíso. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Valparaíso | New York | |
|---|---|---|
| Average temperature | 18°C | 27°C |
| Max. temperature | 19°C | 31°C |
| Min. temperature | 8°C | -5°C |
| Total precipitation | 17 mm | 57 mm |
| Rainy days | 3 days | 9 days |
Start of September
The month of September starts in Valparaíso with mild temps, averaging around 18°C during the day and nights around 8°C.
Mid September
By mid-September, daytime temps stay steady at around 18°C, with nights around 9°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Valparaíso is around 18°C, while nighttime temps are about 9°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Valparaíso for all months and discover the best travel time
Curious about the weather in other parts of Chile? Check out the climate and weather for spots like Santiago, Patagonia, San Pedro de Atacama, or explore other destinations in Chile.
Temperature charts
These charts show the average temperatures in September in Valparaíso, Chile. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Valparaíso
Temperature in September in Valparaíso over the years
Precipitation charts
These charts show the average amount of precipitation in September in Valparaíso, Chile. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Valparaíso
Total precipitation in September in Valparaíso over the years
Daily UV index in September in Valparaíso
This chart shows the average daily UV index in September in Valparaíso, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Valparaíso
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Average weather in Valparaíso by month
Click on a month below to see detailed weather info for Valparaíso. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.