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Bremen in September: Weather, Average temperature and Climate

Discover the weather for Bremen in September and if it’s a good time to travel (based on historical data).
Check flight prices to Bremen on Avionero:
September

Weather in Bremen in September 2025

OK Weather
Mild
🌧️
Rainy
September could be a good time to visit Bremen, as the weather is generally fine. The average high temperature is around +66°F, and there are typically 5 sunny days in September. However, expect about 15 rainy days, and total monthly rainfall of approximately 54 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+66°F
Avg. max. temperature
+32°F
Min.
+90°F
Max.
54 mm
Total precipitation
80%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
9 ⛅️
Cloudy
15 🌦
Rainy
Our opinion: Bremen has OK weather in September.

Average temperature in Bremen in September

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

The expected average maximum temperature in September is +73°F with a maximum of +86°F and a minimum of +45°F.

The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +68°F to +66°F.

Is Bremen warm or cold in September?

Bremen is typically mild in September.

Maximum temperatures go down compared to the previous month from +72°F to +66°F. The minimum temperature also goes down from +55°F to +50°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 Bremen:

Climate in Bremen in September

Bremen weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+72°F+66°F+57°F
Min. temperature
+39°F+32°F+21°F
Max. temperature
+99°F+90°F+81°F
Rainfall
68 mm54 mm61 mm
Wind
3 m/s3 m/s3 m/s
Humidity
75%80%84%
Air pressure
1014 HPa1015 HPa1014 HPa
Sunny days
555
Cloudy days
7910
Rainy days
171516
Snowy days
000

September weather is still as ok as in August. It’s getting colder in September. From +72°F in the day, the average maximum temperature lowers to +66°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 68 mm to 54 mm. Humidity rises from 75% to 80%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 5 sunny days during the month.

October brings much the same weather, it remains ok.

Wind

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

The average wind speed is 2 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Bremen is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Bremen based on historical data.
Last Year
Historical Data
Total precipitation in September is about 38 mm, with a 33% chance of rain on a typical day. The maximum amount of rainfall per day is around 9 mm, which is considered light rain. September is a pretty wet month with over 10 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:
Bremen wettest month is July, where a typical day has a 55% chance of precipitation and 76 mm of rainfall per day. February, on the other hand, is the driest month with a mere 31% chance of precipitation and 37 mm of rainfall per day.

How was the weather last September in Bremen?

This is the weather in Bremen in September 2023:
1 September
☀️
+68°F
2 September
☀️
+70°F
3 September
☀️
+70°F
4 September
☀️
+75°F
5 September
☀️
+85°F
6 September
☀️
+86°F
7 September
☀️
+84°F
8 September
☀️
+86°F
9 September
☀️
+86°F
10 September
☀️
+79°F
11 September
☀️
+86°F
12 September
🌫️
+73°F
13 September
🌫️
+64°F
14 September
☁️
+66°F
15 September
☀️
+71°F
16 September
☀️
+77°F
17 September
☀️
+77°F
18 September
☀️
+75°F
19 September
☀️
+66°F
20 September
☀️
+73°F
21 September
☀️
+75°F
22 September
☀️
+64°F
23 September
🌧️
+62°F
24 September
☀️
+66°F
25 September
☀️
+68°F
26 September
☀️
+71°F
27 September
☀️
+73°F
28 September
☀️
+71°F
29 September
🌧️
+73°F
30 September
☀️
+66°F
In September 2023 Bremen had 25 sunny days, 1 cloudy days, and 2 rainy days. The average maximum temperature was +73°F, with an absolute maximum of +86°F and a minimum of +63°F. The average humidity was 80%, with a maximum of 100% and a minimum of 46%. The average wind speed was 2 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

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

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

The average temperature was the lowest in 1996 (+52°F) and the highest in 2022 (+59°F). The driest year was 1996 with only 433 mm of rainfall, and the wettest year was 2023 with 1024 mm.

FAQ

Frequently asked questions about the weather in Bremen in September:

Is September a good time to visit Bremen?

It’s always a good time to visit Bremen, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Bremen in September?

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

Is Bremen rainy in September?

Bremen 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 Bremen in September?

Usually, it’s not very sunny in Bremen 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 Bremen

Source of the data

For this page, we’ve looked at the typical weather in Bremen, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

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.