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Frankfurt in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Frankfurt in September and see if it is worth visiting.
Check flight prices to Frankfurt on Avionero:
September

Weather in Frankfurt in September 2024

Good Weather
Mild
☁️
Cloudy
Are you considering a trip to Frankfurt in September? Well, the weather is usually on your side with an average maximum temperature of +68°F and about 9 sunny days. Just keep in mind that there may be some rain, with an average of 6 rainy days and 55 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+68°F
Avg. max. temperature
+36°F
Min.
+95°F
Max.
55 mm
Total precipitation
74%
Avg. humidity
2 m/s
Avg. wind
9 ☀️
Sunny Days
15 ⛅️
Cloudy
6 🌦
Rainy
Our opinion: Frankfurt has good weather in September.

Average temperature in Frankfurt in September

Here are the expected maximum, average and minimum temperatures in Frankfurt for September based on the historical data.
Last Year
Historical Data

The temperature in September is +70°F on average, with a range between a maximum of +88°F during the day and a minimum of +41°F at night.

The average maximum temperature goes down 31% by the end of the month, compared with the beginning of the month, from +79°F to +64°F.

Is Frankfurt warm or cold in September?

Frankfurt is typically mild in September.

Maximum temperatures go down compared to the previous month from +77°F to +68°F. The minimum temperature also goes down from +59°F to +52°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how September is compared to other months in Frankfurt:

Climate in Frankfurt in September

Frankfurt weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+77°F+68°F+59°F
Min. temperature
+41°F+36°F+25°F
Max. temperature
+102°F+95°F+81°F
Rainfall
58 mm55 mm57 mm
Wind
2 m/s2 m/s2 m/s
Humidity
67%74%82%
Air pressure
1014 HPa1015 HPa1015 HPa
Sunny days
1095
Cloudy days
141519
Rainy days
767
Snowy days
000

September weather is still as good as in August. It’s getting colder in September. From +77°F in the day, the average maximum temperature lowers to +68°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 58 mm to 55 mm. Humidity rises from 67% to 74%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 10 sunny days in August to 9 in September.

Next month (October) brings a further decline in the weather.

Wind

Wind speed in Frankfurt in September based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Frankfurt is gradually decreasing during September, going from 4 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Frankfurt based on historical data.
Last Year
Historical Data
Typically, there is a 57% chance of rain on an average day in September, with total rainfall of approximately 135 mm. The maximum amount of rainfall per day is around 45 mm, which is moderate rain. September is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Frankfurt wettest month is March, where a typical day has a 23% chance of precipitation and 71 mm of rainfall per day. February, on the other hand, is the driest month with a mere 17% chance of precipitation and 43 mm of rainfall per day.

How was the weather last September in Frankfurt?

This is the weather in Frankfurt in September 2023:
1 September
☀️
+78°F
2 September
☀️
+78°F
3 September
☀️
+76°F
4 September
☀️
+81°F
5 September
☀️
+87°F
6 September
☀️
+86°F
7 September
☀️
+82°F
8 September
🌧️
+72°F
9 September
🌧️
+72°F
10 September
🌧️
+69°F
11 September
🌧️
+73°F
12 September
☀️
+77°F
13 September
🌧️
+74°F
14 September
🌧️
+70°F
15 September
☀️
+67°F
16 September
☀️
+64°F
17 September
☀️
+60°F
18 September
🌧️
+58°F
19 September
☁️
+63°F
20 September
☀️
+61°F
21 September
☀️
+64°F
22 September
☀️
+67°F
23 September
☀️
+68°F
24 September
☀️
+69°F
25 September
🌧️
+58°F
26 September
🌧️
+61°F
27 September
🌧️
+57°F
28 September
🌧️
+57°F
29 September
☀️
+60°F
30 September
☀️
+64°F
In September 2023 Frankfurt had 18 sunny days, 1 cloudy days, and 11 rainy days. The average maximum temperature was +70°F, with an absolute maximum of +88°F and a minimum of +57°F. The average humidity was 74%, with a maximum of 99% and a minimum of 28%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Frankfurt climate has changed over the last 43 years.

The climate in Frankfurt in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+64°F) and the highest in 2016 (+84°F). The driest year was 1982 with only 18 mm of rainfall, and the wettest year was 1984 with 155 mm.

FAQ

Frequently asked questions about the weather in Frankfurt in September:

Is September a good time to visit Frankfurt?

September is a really good time to go to Frankfurt. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Frankfurt.

Can you sunbathe in Frankfurt in September?

September has mild temperatures in Frankfurt. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Frankfurt rainy in September?

Frankfurt is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Frankfurt in September?

Usually, it’s not very sunny in Frankfurt in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Germany

Check out the weather for other cities in Germany.

Monthly weather in Frankfurt

Source of the data

For this page, we’ve looked at the typical weather in Frankfurt, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.