September Temperatures in the United Kingdom

Average temperatures for September at cities and towns throughout the United Kingdom are listed below in degrees Celsius and Fahrenheit.

The tables give the normals for maximum and minimum daily temperatures based on weather data collected from 1991 to 2020.

Across the UK, September temperatures average a daily high of 17 degrees Celsius (62 degrees Fahrenheit) and a low of 9 °C (48 °F).

Southern England

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
65	49	Birmingham	18	10
65	49	Bristol	18	9
66	55	Dover	19	13
65	56	Isles of Scilly	18	13
69	53	London, Greenwich	20	12
69	51	London, Kew Gardens	20	11
66	51	Norwich	19	10
65	50	Nottingham	18	10
65	53	Plymouth	18	12
68	53	Southampton	20	12
65	49	Stoke-on-Trent	18	9
66	55	Weymouth	19	13
66	52	Worthing	19	11

Average daily temperatures in September
High °F	Low °F	Place	High °C	Low °C
63	49	Ambleside, Windermere Lake	17	10
61	49	Berwick-upon-Tweed	16	10
63	49	Dumfries	17	10
66	51	Hull	19	11
64	52	Liverpool	18	11
64	49	Manchester	18	10
64	48	Middlesbrough	18	9
63	50	Newcastle upon Tyne	17	10
62	50	Prestwick	17	10
61	45	Rochester, Northumberland Park	16	7
64	51	Sheffield	18	10

September temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
66	51	Cardiff	19	11
64	51	Harlech	18	11
64	48	Llandrindod Wells	18	9
63	51	Rhyl	17	11
64	55	Swansea	18	13

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
61	48	Aberdeen	16	9
62	48	Dundee	17	9
62	49	Edinburgh	17	10
62	50	Glasgow	17	10
62	48	Inverness	17	9
58	49	Kirkwall, Orkney Islands	14	9
55	48	Lerwick, Shetland Islands	13	9
59	49	Stornoway, Outer Hebrides	15	9
59	51	Tiree, Inner Hebrides	15	10

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
63	49	Armagh	17	10
63	49	Belfast	17	10
62	48	Castlederg	17	9
62	50	Londonderry	17	10
63	52	Warrenpoint	17	11