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Assen in September 2026: weather, temperatures and activities

Do you want to visit Assen in September 2026? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether September is a good month to travel to Assen, Netherlands.

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Is it worth visiting Assen in September?

Check your ideal travel criteria and see if the month of September suits your plans to go to Assen.
What matters most?
Assen in September 2026: weather, temperatures and activities

Page summary

Assen in September in summary
Favourable weather
Min 12°C Max 19°C 57 mm 3 day(s) 91% 49% 10.2 h/day
Practical guidelines
High crowding 06:08 18:49
Hourly weather

Average weather in Assen in September 2026

Favourable weather

The weather in Assen in September 2026 is based on statistical data from previous years in September. This allows you to forecast the weather in September 2026. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Assen in September

Temperatures, precipitation and monthly trends help to better understand the climate in Assen in September.

Temperatures and rain in Assen in September

Average daily weather

Temperatures and rain day by day in September.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of September is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Assen in September

The climate of Assen in September is humid. An average of 57 mm precipitation is recorded over 15 days. The situation is drier than the previous month: in August, the average recorded is 95 mm over 20 days.

Temperatures are rather cool in Assen in September, but remain tolerable with appropriate clothing. The average maximum temperature reaches 19°C, while the minimum falls to about 12°C. The month's average temperature is 15°C. These normals should be compared with the records recorded in Assen in September: 30°C as a maximum in 2016 and 4°C as a minimum in 2010. We can expect about 18 days with temperatures above 18°, i.e. 60% of the month.

In September, the days last on average 12:41 in Assen. The sun rises around 06:08 and sets around 18:49.

With favorable weather, the month of September is a good month to travel to Assen in the Netherlands.

Seasonal normals

Seasonal normals of Assen in September

Check the seasonal normals in Assen in September and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
September
Weather data August September October
Outside temperature
Average temperature 18.5°C 15.3°C 11.3°C
Maximum temperature 21.8°C 18.7°C 14.1°C
Minimum temperature 15.2°C 11.9°C 8.6°C
Record maximum temperature 35.0°C
(2018)
30.0°C
(2016)
25.0°C
(2011)
Record low temperature 9.0°C
(2016)
4.0°C
(2010)
0.0°C
(2019)
Number of days at +30° 1 day(s)
(3%)
0 day(s)
(0%)
0 day(s)
(0%)
Number of days at +18° 28 day(s)
(90%)
18 day(s)
(60%)
4 day(s)
(13%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Wind
Wind speed 18 km/h 18 km/h 20 km/h
Wind temperature 14.7°C 10.7°C 6.3°C
Precipitation (rain)
Precipitation 95.2 mm 56.8 mm 63.2 mm
Number of days with precipitation 20 day(s)
(65%)
15 day(s)
(50%)
15 day(s)
(48%)
Number of days with significant precipitation (greater than 5 mm) 6 day(s)
(20%)
3 day(s)
(12%)
4 day(s)
(14%)
Record precipitation in one day 34.4 mm
(2018)
33.6 mm
(2019)
29.2 mm
(2013)
Other weather data
Humidity 88% 91% 92%
Visibility 8.9 km 8.5 km 8.7 km
Cloud cover 44% 49% 58%
UV index 5 4 3
Daily sunshine 13h 10h 7h
Sunrise and sunset
Sunrise time 05h15 06h08 07h00
Sunset time 20h00 18h49 17h38
Day length 14h45 12h41 10h38
Our opinion on the climate in September
The review of Where And When favourable weather favourable weather fair weather
Observed weather

What was the weather like in Assen in September last?

Find the observed weather calendar in Assen in September 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Patchy rain nearby
15°C22°C5.1 mm
2
Partly Cloudy
13°C22°C1.0 mm
3
Patchy rain nearby
16°C22°C1.1 mm
4
Clear/Sunny
16°C23°C0.1 mm
5
Partly Cloudy
12°C22°C0.0 mm
6
Clear/Sunny
11°C23°C0.0 mm
7
Clear/Sunny
13°C26°C0.0 mm
8
Patchy rain nearby
14°C20°C0.1 mm
9
Partly Cloudy
13°C20°C0.2 mm
10
Patchy rain nearby
12°C19°C0.1 mm
11
Partly Cloudy
14°C20°C1.2 mm
12
Patchy rain nearby
11°C17°C1.8 mm
13
Patchy rain nearby
9°C16°C0.9 mm
14
Patchy rain nearby
10°C19°C0.1 mm
15
Patchy rain nearby
15°C19°C1.7 mm
16
Light rain shower
13°C14°C2.5 mm
17
Patchy rain nearby
11°C16°C0.1 mm
18
Overcast
17°C20°C0.1 mm
19
Clear/Sunny
14°C24°C0.0 mm
20
Partly Cloudy
16°C24°C0.0 mm
21
Patchy rain nearby
13°C17°C2.2 mm
22
Patchy rain nearby
12°C15°C0.2 mm
23
Light rain shower
8°C16°C0.3 mm
24
Clear/Sunny
6°C16°C0.0 mm
25
Clear/Sunny
6°C17°C0.0 mm
26
Partly Cloudy
10°C17°C0.0 mm
27
Cloudy
11°C18°C0.0 mm
28
Partly Cloudy
10°C19°C0.1 mm
29
Partly Cloudy
14°C16°C0.0 mm
30
Partly Cloudy
11°C16°C0.0 mm
Nearby

Where to go near Assen in September?

Compare cities and destinations near Assen in September to find another travel stop, a nearby alternative or a logical continuation of your stay in Assen.

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Every month

Best time to visit Assen month by month

Compare the weather in Assen across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Assen in September: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Yes, it’s a good time. Conditions are favorable in Assen in September, which places this month 5th out of 12.

Expect an average of 19°C during the day and 12°C at night, with about 57 mm of precipitation spread over 3 rainy days.

Expect about 10.2 hours of sunshine per day on average for this month.

Yes: this month is in High crowding, with a visitor index of 73/100. Book your accommodation and transportation well in advance.

The most favorable months in Assen are: May, June, July, August and September. You are therefore already in one of the best times of the year; shifting your plans would not gain you much in terms of weather.
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