GermanyAverage weather for Altenau in September
It's pleasantly warm in September in Altenau with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 24°C. At night, you can expect temperatures between 9°C and 14°C.
Start of September
The month of September starts in Altenau with warm temps, averaging around 23°C during the day and nights around 13°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid September
By mid-September, daytime temps drop to around 22°C, with nights around 13°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Altenau is around 20°C, while nighttime temps are about 10°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 44 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Altenau in September |
New York | ||
|---|---|---|---|
 Average temperature |
21°C | 27°C | |
 Max. temperature |
24°C | 31°C | |
| Min. temperature |
18°C | -5°C | |
 Total precipitation |
44 mm | 57 mm | |
| Rainy days |
8 days | 9 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Altenau?
Looking for great weather? September is a good time to be in Altenau. The temperatures are nice, and there’s not too much rain.
Temperature records
With 32°C in 2016, Altenau reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 10°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 18°C.
Check out the climate of Altenau for all months and discover the best travel time
Curious about the weather in other parts of Germany? Check out the climate and weather for spots like Sauerland, Bavaria, or explore other destinations in Germany.
Daily Temperature in September in Altenau
This chart shows the average daily high and low temperatures in September for Altenau, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Altenau
The chart below shows the average daily precipitation in September for Altenau, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed 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 it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 8 days of precipitation in Altenau.
Daily UV index in September in Altenau
This chart shows the average daily UV index in September in Altenau, 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 Altenau over the years
This chart shows the average temperature in September in Altenau, measured in degrees Celsius, over the past few years.
Total precipitation in September in Altenau over the years
This chart shows the average precipitation in September in Altenau, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Altenau
Click on any day in September to get detailed info about the usual weather on that day in Altenau. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Altenau
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Average weather in Altenau by month
Click on a month below to see detailed weather info for Altenau. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
