Barmouth in september: average Weather, Temperature and Climate
Weather in Barmouth in september 2025
The weather in Barmouth in september comes from statistical datas on the last years. You can view the weather statistics the entire 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
52°F
Fog
29% of time
21%
18%
14%
Weather at 12pm
59°F
Cloudy
26% of time
25%
20%
20%
Weather at 6pm
56°F
Moderate rain at times
28% of time
23%
22%
16%
Weather at 3am
52°F
28%
26%
15%
14%
Evolution of daily average temperature and precipitation in Barmouth in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Barmouth in september.
The climate of Barmouth in september is tolerable
The climate in september in Barmouth is wet (with 4.9in of precipitation over 7 days). The weather is better from the previous month since in august it receives an average of 5.7in of precipitation over 8 days.
The climate is quite cold in this location the month of september, but it is liveable when dressing cosy. The thermometer averaged maximum of 61°F. The minimum is 52°F. Thus, the mean temperature average in september in Barmouth is 56°F. These temperatures are far removed from those records observed in Barmouth in the month of september with a maximum record of 77°F in 2021 and a minimum record of 36°F in 2012. You can hope to have about 5 days with temperatures over 65°F, or 17% of time.
In september in Barmouth, the days on average last 12:40. The sun rises at 05:51 and sets at 18:31.
With proper weather, september is okay (but not the best) to go in this city.
September: another location in Wales?
If you want to go to Wales in september, there are destinations with better weather than Barmouth:
In september, Cardiff, Conwy, Holyhead, Pembrokeshire, Swansea and Aberystwyth have good weather.
Seasonal average climate and temperature of Barmouth in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 56°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 52°F | ||||
| Highest record temperature | 77°F (2021) | ||||
| Lowest record temperature | 36°F (2012) | ||||
| Number of days at +65°F | 5 day(s) (17%) | ||||
| Sea temperature | |||||
| Average sea temperature | 61°F | ||||
| Lowest sea temperature | 59°F | ||||
| Highest sea temperature | 62°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.9in | ||||
| Number of days with rainfall | 7 day(s) (24%) | ||||
| Record daily rainfall | 2.7in (2018) | ||||
| Other climate data | |||||
| Humidity | 95% | ||||
| Visibility | 8.02km | ||||
| Cloud cover | 59% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:51 | ||||
| Time of sunset | 18:31 | ||||
| Length of day | 12:40 | ||||
| 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 Barmouth in september 2024:
54°F to 65°F
59°F to 63°F
49°F to 59°F
47°F to 56°F
49°F to 59°F
58°F to 74°F
58°F to 68°F
58°F to 59°F
47°F to 56°F
52°F to 54°F
45°F to 50°F
43°F to 50°F
41°F to 54°F
47°F to 58°F
52°F to 56°F
47°F to 63°F
49°F to 65°F
47°F to 67°F
50°F to 67°F
50°F to 67°F
49°F to 67°F
56°F to 59°F
56°F to 59°F
50°F to 54°F
45°F to 50°F
50°F to 52°F
45°F to 50°F
45°F to 52°F
41°F to 52°F
50°F to 52°F
Map: other cities in Wales in september
Cities near Barmouth:
| Aberystwyth in september | good weather |
| Snowdonia National Park in september | tolerable weather |
| Newtown in september | tolerable weather |
| Conwy in september | good weather |
| Llandudno in september | good weather |
| Llandrindod Wells in september | tolerable weather |
| Holyhead in september | good weather |
| Amlwch in september | good weather |
| Buckley in september | good weather |
| Carmarthen in september | good weather |
| Brecon Beacons (National Park) in september | tolerable weather |
| Fishguard in september | good weather |
Click over cities on the map for information about the weather in september.
Barmouth
perfect weather
good
tolerable
bad
very bad
Weather data for Barmouth in september:
Weather data for Barmouth for september are derived from an average of the weather forecast since 2009 in Barmouth. There is a margin of error and these forecasts are to be considered as general information only. The weather in Barmouth 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 Barmouth.