Shannon Aiport 1981–2010 averages
TEMPERATURE (degrees Celsius)JanFebMarAprMayJunJulAugSepOctNovDecYear
mean daily max8.89.211.113.316.018.319.819.617.714.311.19.014.0
mean daily min3.23.24.55.78.210.912.912.710.88.25.53.67.4
mean temperature6.06.27.89.512.114.616.416.214.211.28.36.310.7
absolute max.14.815.518.323.527.230.230.629.826.122.317.615.330.6
min. maximum-2.40.93.55.48.011.813.813.011.17.00.8-6.0-6.0
max. minimum11.812.311.713.015.317.819.419.317.816.313.412.919.4
absolute min. -11.2-5.5-5.8-2.30.23.66.74.41.7-2.0-6.6-11.4-11.4
mean num. of days with air frost 5.35.12.10.70.00.00.00.00.00.52.34.820.8
mean num. of days with ground frost 13.712.611.08.33.30.30.00.11.23.89.512.576.3
mean 5cm soil4.54.66.38.912.715.917.216.413.810.27.15.210.2
mean 10cm soil4.84.86.38.512.115.116.616.113.610.37.45.510.1
mean 20cm soil5.55.67.09.212.315.116.816.614.511.48.46.310.7
RELATIVE HUMIDITY (%)
mean at 0900UTC87.187.085.079.876.376.880.082.184.787.088.988.483.6
mean at 1500UTC 80.574.670.564.463.365.168.068.269.275.280.583.171.9
SUNSHINE (hours)
mean daily duration 1.62.33.25.15.85.24.54.53.92.92.01.43.5
greatest daily duration 8.110.211.013.615.615.815.714.412.210.18.37.115.8
mean no. of days with no sun 9.26.45.72.41.92.02.42.32.95.57.811.159.8
RAINFALL (mm)
mean monthly total 102.376.278.759.264.869.865.982.075.6104.994.1104.0977.6
greatest daily total 38.229.428.140.225.040.639.551.052.336.926.941.252.3
mean num. of days with >= 0.2mm 201619161615161816202019211
mean num. of days with >= 1.0mm 161214111211121312161515159
mean num. of days with >= 5.0mm 85544445476763
WIND (knots)
mean monthly speed 10.310.210.09.08.98.58.58.28.49.29.19.49.1
max. gust 75806562595152556271668383
max. mean 10-minute speed 52464440373738354047415757
mean num. of days with gales 1.70.90.80.30.20.10.00.10.10.60.71.26.7
WEATHER (mean no. of days with..)
snow or sleet 2.32.31.40.50.00.00.00.00.00.00.11.38.0
snow lying at 0900UTC0.60.10.10.00.00.00.00.00.00.00.00.10.9
hail 3.63.33.42.21.20.10.10.10.30.91.12.418.6
thunder 0.90.50.40.30.50.50.80.40.20.40.40.55.7
fog3.32.02.11.91.51.41.42.02.92.93.94.229.6