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Dublin September Weather

Averages and records for weather in Dublin, Ireland in the month of September.

Typical Dublin September Weather 1991–2020
Average daily high	17.8 °C
Average daily low	9.4 °C
Average monthly precipitation	6.0 cm
Daily chance of precipitation	55.1%

Dublin September Weather Records 1867–2024
Highest temperature	28.7 °C	September 6, 1868
Lowest temperature	-0.1 °C	September 19, 1986
Highest daily low	18.6 °C	September 6, 2016
Lowest daily high	7.8 °C	September 25, 1942
Hottest average high temperature	19.8 °C	1949
Coldest average high temperature	14.7 °C	1912
Most daily precipitation	6.9 cm	September 3, 1931
Most monthly precipitation	17.6 cm	1976

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	18.9	10.4	26.7	1.6
September 2	18.8	10.3	27.6	0.8
September 3	18.7	10.2	24.6	1.7
September 4	18.6	10.1	25.1	0.8
September 5	18.5	10.0	26.1	3.0
September 6	18.4	10.0	28.7	2.7
September 7	18.4	9.9	25.9	1.7
September 8	18.3	9.8	26.8	0.6
September 9	18.3	9.8	26.1	1.1
September 10	18.1	9.7	25.3	0.0
September 11	18.1	9.6	25.0	0.0
September 12	18.0	9.5	24.9	0.5
September 13	17.9	9.5	25.2	0.0
September 14	17.8	9.5	24.7	0.3
September 15	17.7	9.4	24.6	-0.1
September 16	17.6	9.4	25.2	-0.1
September 17	17.5	9.3	25.6	0.6
September 18	17.4	9.2	23.3	0.0
September 19	17.3	9.2	23.9	-0.1
September 20	17.1	9.1	23.7	0.6
September 21	17.0	9.0	23.8	-0.1
September 22	16.9	8.9	24.7	-0.1
September 23	16.8	8.8	22.8	-0.1
September 24	16.7	8.7	24.4	0.0
September 25	16.6	8.7	23.1	0.6
September 26	16.5	8.6	22.7	0.2
September 27	16.4	8.5	24.2	0.0
September 28	16.4	8.5	24.1	-0.1
September 29	16.2	8.4	23.6	-0.1
September 30	16.1	8.3	23.9	0.0

Weather Station Details

Years	Station	Coordinates
1867–2024	Dublin Phoenix Park	location