Basel in september: average Weather, Temperature and Climate
Weather in Basel in september 2025
The weather in Basel in the month of september comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
54°F
Clear/Sunny
34% of time
23%
22%
13%
Weather at 12pm
70°F
Clear/Sunny
47% of time
24%
20%
7%
Weather at 6pm
59°F
Clear/Sunny
44% of time
25%
22%
6%
Weather at 3am
54°F
32%
27%
23%
18%
Evolution of daily average temperature and precipitation in Basel in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Basel in september.
The climate of Basel in september is good
the weather in Basel in september is relatively dry (with 3.1in of rainfall over 5 days). It should be noted an improvement from the previous month since in august it receives an average of 5.6in of rainfall over 8 days.
The climate quite comfortable in this city september. The high seasonal norm is 72°F. In the morning the temperature drops to 54°F. Thus, the mean temperature average in september in Basel is 63°F. Note that these seasonal averages are in contrast with those observed in Basel in the month of september with a maximum record of 88°F in 2013 and a minimum record of 38°F in 2010. You can expect to have about 25 days with temperatures up to 65°F, or 83% of time.
In september in Basel, the days on average last 12:34. The sun rises at 06:07 and sunset is at 18:41.
With a good weather, september is a good month to go in this locality in Switzerland.
Seasonal average climate and temperature of Basel in september
Check below seasonal norms These statistics are generated from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 63°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 88°F (2013) | ||||
| Lowest record temperature | 38°F (2010) | ||||
| Number of days at +86°F | 1 day(s) (3%) | ||||
| Number of days at +65°F | 25 day(s) (83%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 11km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.1in | ||||
| Number of days with rainfall | 5 day(s) (17%) | ||||
| Record daily rainfall | 1.2in (2013) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.7km | ||||
| Cloud cover | 33% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:07 | ||||
| Time of sunset | 18:41 | ||||
| Length of day | 12:34 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Basel in september 2024:
65°F to 85°F
63°F to 81°F
63°F to 83°F
63°F to 74°F
61°F to 74°F
56°F to 76°F
58°F to 83°F
61°F to 70°F
56°F to 65°F
52°F to 68°F
54°F to 59°F
45°F to 59°F
41°F to 56°F
47°F to 58°F
40°F to 61°F
43°F to 58°F
52°F to 61°F
47°F to 68°F
52°F to 67°F
50°F to 74°F
54°F to 74°F
56°F to 72°F
58°F to 59°F
50°F to 68°F
49°F to 68°F
58°F to 59°F
54°F to 58°F
43°F to 50°F
41°F to 59°F
49°F to 67°F
Map: other cities in Switzerland in september
Cities near Basel:
| Delémont in september | good weather |
| Regionaler Naturpark Thal in september | good weather |
| Olten in september | good weather |
| Aarau in september | good weather |
| Langenthal in september | good weather |
| Grenchen in september | good weather |
| Biel/Bienne in september | good weather |
| Burgdorf in september | tolerable weather |
| Wohlen in september | good weather |
| Villeret in september | good weather |
| Bern in september | tolerable weather |
| Entlebuch in september | good weather |
Click over cities on the map for information about the weather in september.
Basel
perfect weather
good
tolerable
bad
very bad
Weather data for Basel in september:
Weather data for Basel for september are derived from an average of the weather forecast since 2009 in Basel. There is a margin of error and these forecasts are to be considered as general information only. The weather in Basel can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Basel.