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Isle of Anglesey September Weather

Averages and records for weather in Isle of Anglesey, United Kingdom in the month of September.

Typical Isle of Anglesey September Weather 1991–2020
Average daily high	17.2 °C
Average daily low	11.5 °C
Average monthly precipitation	7.5 cm
Daily chance of precipitation	51.5%

Isle of Anglesey September Weather Records 1930–2024
Highest temperature	28.2 °C	September 4, 2005
Lowest temperature	1.8 °C	September 19, 1986
Highest daily low	18.2 °C	September 7, 2023
Lowest daily high	9.4 °C	September 25, 1942
Hottest average high temperature	19.8 °C	1959
Coldest average high temperature	14.8 °C	1952
Most daily precipitation	4.3 cm	September 24, 2012
Most monthly precipitation	15.0 cm	1999

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	18.0	12.4	25.9	7.2
September 2	17.9	12.3	24.9	6.4
September 3	17.9	12.2	26.2	5.8
September 4	17.8	12.2	28.2	5.6
September 5	17.8	12.1	25.7	4.1
September 6	17.7	12.1	28.0	7.0
September 7	17.7	12.0	24.2	3.9
September 8	17.7	11.9	25.8	4.9
September 9	17.6	11.9	25.6	5.5
September 10	17.5	11.8	24.4	2.8
September 11	17.5	11.7	26.1	3.1
September 12	17.4	11.7	24.4	4.4
September 13	17.4	11.6	25.0	3.6
September 14	17.4	11.5	25.6	4.5
September 15	17.3	11.5	23.5	4.9
September 16	17.2	11.5	22.6	5.0
September 17	17.1	11.4	23.8	3.7
September 18	17.0	11.4	21.7	4.3
September 19	16.9	11.3	22.2	1.8
September 20	16.8	11.2	27.4	3.9
September 21	16.7	11.1	25.5	4.5
September 22	16.6	11.0	22.1	3.3
September 23	16.5	11.0	23.9	5.0
September 24	16.4	10.9	25.0	4.4
September 25	16.4	10.9	23.3	4.4
September 26	16.3	10.8	19.3	4.0
September 27	16.2	10.7	22.6	2.8
September 28	16.1	10.7	23.3	3.3
September 29	16.0	10.6	23.9	3.6
September 30	16.0	10.5	22.8	4.1

Weather Station Details

Years	Station	Coordinates
1930–2024	Anglesey Airport	location