Dumbarton in september: average Weather, Temperature and Climate
Weather in Dumbarton in september 2025
The weather in Dumbarton in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
50°F
Fog
29% of time
27%
13%
13%
Weather at 12pm
59°F
Moderate rain at times
35% of time
23%
18%
14%
Weather at 6pm
56°F
Moderate rain at times
36% of time
21%
16%
15%
Weather at 3am
50°F
32%
25%
13%
12%
Evolution of daily average temperature and precipitation in Dumbarton in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Dumbarton in september.
The climate of Dumbarton in september is tolerable
the weather in Dumbarton in september is wet (with 5.1in of precipitation over 8 days). The weather is better from the previous month since in august it receives an average of 6.6in of precipitation over 10 days.
The climate is relatively cool in that locality september, but it is liveable when dressing cosy. The high seasonal norm is 59°F. The seasonal minimum is 50°F. Thus, the mean temperature average in september in Dumbarton is 56°F. Note that these seasonal averages are in contrast with those observed in Dumbarton in the month of september with a maximum record of 77°F in 2021 and a minimum record of 34°F in 2012. You can plan to have about 5 days with temperatures up to 65°F, or 17% of the month.
On this month of september, day length in Dumbarton is generally 12:45. Sunrise is at 05:50 and sets at 18:35.
With a correct climate, this month is okay (but not the best) to go in that area in Scotland.
September: another location in Scotland?
If you want to go to Scotland in september, there are destinations with better weather than Dumbarton:
In september, Dundee, Perth, Burntisland, Cockenzie, Kirkcaldy and Monifieth have good weather.
Seasonal average climate and temperature of Dumbarton in september
Check below seasonal norms These datas are compiled from the weather statements of the last years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 56°F | ||||
| Highest temperature | 59°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 77°F (2021) | ||||
| Lowest record temperature | 34°F (2012) | ||||
| Number of days at +65°F | 5 day(s) (17%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 56°F | ||||
| Highest sea temperature | 59°F | ||||
| Wind | |||||
| Wind speed | 19km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.1in | ||||
| Number of days with rainfall | 8 day(s) (28%) | ||||
| Record daily rainfall | 1.7in (2009) | ||||
| Other climate data | |||||
| Humidity | 95% | ||||
| Visibility | 7.72km | ||||
| Cloud cover | 62% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:50 | ||||
| Time of sunset | 18:35 | ||||
| Length of day | 12:45 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Dumbarton in september 2024:
47°F to 58°F
54°F to 61°F
47°F to 56°F
45°F to 58°F
49°F to 68°F
52°F to 74°F
54°F to 72°F
58°F to 72°F
47°F to 58°F
47°F to 54°F
45°F to 54°F
38°F to 52°F
40°F to 54°F
49°F to 59°F
50°F to 59°F
47°F to 59°F
52°F to 68°F
56°F to 70°F
49°F to 68°F
45°F to 67°F
49°F to 67°F
47°F to 63°F
45°F to 63°F
47°F to 49°F
43°F to 50°F
45°F to 50°F
40°F to 50°F
38°F to 52°F
40°F to 54°F
47°F to 50°F
Map: other cities in Scotland in september
Cities near Dumbarton:
| Greenock in september | bad weather |
| Helensburgh in september | bad weather |
| Paisley in september | tolerable weather |
| Gourock in september | bad weather |
| Glasgow in september | tolerable weather |
| Dunoon in september | bad weather |
| Newton Mearns in september | tolerable weather |
| Largs in september | tolerable weather |
| East Kilbride in september | tolerable weather |
| Rothesay in september | tolerable weather |
| Loch Lomond & The Trossachs National Park in september | bad weather |
| Coatbridge in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Dumbarton
perfect weather
good
tolerable
bad
very bad
Weather data for Dumbarton in september:
Weather data for Dumbarton for september are derived from an average of the weather forecast since 2009 in Dumbarton. There is a margin of error and these forecasts are to be considered as general information only. The weather in Dumbarton 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 Dumbarton.