Birr 1971–2000 averages
TEMPERATURE (degrees Celsius)JanFebMarAprMayJunJulAugSepOctNovDecYear
mean daily max7.98.410.112.315.217.619.619.216.813.510.18.513.3
mean daily min2.
mean temperature4.
absolute max.14.315.516.823.725.731.230.829.425.621.317.515.331.2
min. maximum-3.5-
max. minimum11.611.911.313.015.216.518.918.017.915.713.113.018.9
absolute min. -14.6-9.4-5.9-4.7-2.3-
mean num. of days with air frost
mean num. of days with ground frost
mean 5cm soil3.
mean 10cm soil3.
mean 20cm soil4.
mean at 0900UTC89.789.187.382.077.778.180.884.186.288.990.390.085.3
mean at 1500UTC 82.676.671.965.164.966.067.868.070.376.181.084.872.9
SUNSHINE (hours)
mean daily duration
greatest daily duration 7.49.310.613.315.115.715.213.611.
mean num. of days with no sun
mean monthly total 78.960.563.453.255.360.459.
greatest daily total 25.628.022.026.319.741.144.559.130.433.829.737.559.1
mean num. of days with >= 0.2mm 191619151515151716181818201
mean num. of days with >= 1.0mm 141214101110111211141314146
mean num. of days with >= 5.0mm 54434335565552
WIND (knots)
mean monthly speed
max. gust 85776458554949465164606985
max. mean 10-minute speed 51383329292724273037343851
mean num. of days with gales
WEATHER (mean no. of days with..)
snow or sleet
snow lying at 0900UTC2.