Snowdonia September Weather Averages Gwynedd, United Kingdom

September Weather Averages for Snowdonia

High Temp	15°C	59°F
Low Temp	9°C	49°F
Avg Temp	12°C	54°F
Sunshine Hours	83 hours
Rainfall	121.00 mm	4.76 In
Rain days	10 days
Pressure	1016 mb	30 In

Snowdonia September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	15°C / 59°F	9°C / 49°F	12°C / 54°F	112 hours	62.66 mm / 2.47 In	7 days	1022 mb / 31 In
2010	15°C / 59°F	9°C / 48°F	12°C / 54°F	71 hours	169.78 mm / 6.68 In	15 days	1014 mb / 30 In
2011	15°C / 59°F	10°C / 50°F	13°C / 55°F	65 hours	151.62 mm / 5.97 In	13 days	1011 mb / 30 In
2012	14°C / 57°F	8°C / 46°F	11°C / 52°F	67 hours	163.91 mm / 6.45 In	13 days	1014 mb / 30 In
2013	15°C / 60°F	9°C / 48°F	12°C / 53°F	52 hours	62.80 mm / 2.47 In	9 days	1015 mb / 30 In
2014	18°C / 64°F	9°C / 49°F	13°C / 56°F	121 hours	12.47 mm / 0.49 In	1 days	1019 mb / 31 In
2015	15°C / 58°F	7°C / 45°F	11°C / 52°F	100 hours	71.07 mm / 2.80 In	7 days	1017 mb / 31 In
2016	16°C / 62°F	11°C / 51°F	14°C / 56°F	53 hours	123.35 mm / 4.86 In	10 days	1015 mb / 30 In
2017	14°C / 57°F	9°C / 48°F	11°C / 52°F	34 hours	179.77 mm / 7.08 In	18 days	1012 mb / 30 In
2018	14°C / 57°F	8°C / 47°F	11°C / 52°F	56 hours	156.99 mm / 6.18 In	10 days	1020 mb / 31 In
2019	15°C / 58°F	9°C / 48°F	12°C / 53°F	103 hours	158.16 mm / 6.23 In	15 days	1016 mb / 30 In
2020	15°C / 58°F	9°C / 47°F	12°C / 53°F	111 hours	64.68 mm / 2.55 In	7 days	1017 mb / 31 In
2021	17°C / 62°F	10°C / 51°F	13°C / 56°F	124 hours	134.02 mm / 5.28 In	9 days	1018 mb / 31 In
2022	15°C / 60°F	9°C / 49°F	12°C / 54°F	49 hours	149.30 mm / 5.88 In	10 days	1013 mb / 30 In
2023	17°C / 62°F	11°C / 52°F	14°C / 57°F	117 hours	175.65 mm / 6.92 In	7 days	1013 mb / 30 In
2024	14°C / 58°F	9°C / 47°F	11°C / 53°F	96 hours	99.73 mm / 3.93 In	8 days	1015 mb / 30 In

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