Temperatures in September
It's warm in September in Usa with an average temperature of 29°C. Temperatures this month range from a low of 27°C to a high of 31°C. At night, you can expect temperatures between 21°C and 25°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Usa in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Usa with hot temperatures, averaging around 31°C during the day and nights close to 24°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 30°C, with nights close to 23°C. The chance of precipitation is high during this period.
End of September
By the end of September, the average daytime temperature in Usa will be around 29°C, with nights close to 22°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Precipitation in September
In September, there is an average of 334 mm of precipitation, spread over 14 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
The average precipitation chance is 47% per day this month. Though it seems average, the weather’s variable. Some days have higher, others lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Usa. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Usa in September |
London | ||
|---|---|---|---|
 Average Temperature |
29°C | 20°C | |
 High Temp |
31°C | 22°C | |
| Low Temp |
27°C | 17°C | |
 Total Precipitation |
334 mm | 44 mm | |
| Rainy Days |
14 days | 8 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Usa?
After some sun? Then September isn’t the best time to be in Usa. The temperature is pleasant, but there’s too much chance of rain this month.
The typhoon season in Usa runs from June to November.
Temperature records for Usa in September
With 36°C, Usa hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 22°C in 2017. The extreme night temperatures ranged from a low of 14°C to a high of 28°C.
Check out the climate of Usa for all months and discover the best travel time
Curious about the climate in other parts of Japan? Check out the weather and climate in places like Tokyo, Kyōto, Osaka, or have a look at other destinations in Japan.
Plan your next holiday
Don’t miss the best holiday deals for Usa and see what our partners have for you.
Daily Temperature in September in Usa
This chart shows the average daily temperatures, both day and night, for each day in September in Usa, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Usa
The chart below shows the average daily precipitation in September for Usa, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 14 days of rain in Usa.
Daily UV Index in September in Usa
This chart shows the average daily UV index in September in Usa, 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.
Temperature in September in Usa Over the Years
This chart shows the average temperature in September in Usa, measured in degrees Celsius, over the past years.
Total Precipitation in September in Usa Over the Years
This chart shows the average precipitation in September in Usa, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Usa
Click on a specific day in September for detailed info on the typical weather on that day in Usa. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Usa
Have you been to Usa in September?
Share your weather experience in September in Usa.
Average Weather in Usa by Month
Click on a month below to see detailed weather info for Usa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
