SOUTHEND-ON-SEA - C.O.L. station 15m a.m.s.l. Dec-99 Climatological day 18:00 to 18:00 Date Max Min Mean D.P. Hum Rain Baro Wind Max Weather °C °C °C °C % (mm) (mb) Gust 1 12.8 9.4 11.1 3.8 68 0.0 1021.0 SW3 26mph Some sunny intervals. 2 9.5 5.4 7.45 4.2 79 0.0 1022.0 SW3 26mph Sunny periods. 3 12.8 7.2 10 -0.7 58 1.5 1008.6 SSW4 43mph Mainly cloudy, windy, some rain. 4 7.4 3.9 5.65 0.8 75 0.0 1009.8 SW3 25mph Sunny periods, cold wind. 5 6.1 1.2 3.65 1.5 82 0.0 1025.9 W2 17mph Ground frost o/n, sunny. 6 12.5 4.2 8.35 8.8 83 0.0 1013.0 SW2 32mph Mainly cloudy, windy, mild. 7 11.9 7.2 9.55 4.8 84 1.3 1008.1 SW3 30mph Sunny intervals, showers pm. 8 10.8 5.2 8 8.2 92 3.6 995.8 S3 31mph Cloudy, rain late pm. 9 10.1 6.1 8.1 2.9 74 0.0 990.1 SSW3 29mph Sunny periods. 10 8.8 5.6 7.2 2.7 70 0.0 1002.4 WSW2 18mph Sunny periods. 11 12.6 5.2 8.9 7.7 82 6.1 986.9 SSW3 30mph Rain am, bright spells. 12 10.7 6.7 8.7 4.9 87 0.5 996.2 W2 24mph Mainly cloudy, showers pm. 13 7.5 3.4 5.45 2.2 85 7.4 996.0 WSW2 32mph Sunny start, rain pm. 14 4.9 0.9 2.9 -0.8 88 0.0 1000.6 WNW1 14mph Ground frost o/n, sunny periods. 15 3.2 0.2 1.7 0.5 86 0.3 1019.7 NW3 24mph Dusting of snow early, sunny intervals. 16 6.6 0.8 3.7 2.8 85 0.0 1024.9 WNW2 16mph Ground frost o/n, hazy sun. 17 11.5 3.9 7.7 7.8 93 2.8 1008.1 SSW3 35mph Cloudy, outbreaks of rain, mild. 18 8.9 2.2 5.55 -0.8 67 0.0 1015.6 NNW1 11mph Bright start, cloudy pm. 19 3.5 -0.7 1.4 -4.8 69 0.3 1024.0 NW2 23mph Frost o/n, sunny. 20 2.8 -2.6 0.1 -2.5 82 0.0 1027.2 WNW1 11mph Frost o/n, sunny, then hazy. 21 6.3 -1.5 2.4 1.6 82 1.5 1024.2 SSE3 23mph Frost o/n, rain & sleet am, cloudy, cool. 22 9.9 3.9 6.9 8.6 82 0.0 1010.0 SSE3 27mph Cloudy, some drizzle pm. 23 10.8 5.8 8.3 6.4 86 7.9 1014.9 S3 28mph Rain o/n, sunny, hazy pm. 24 11.4 8.6 10 10.3 94 8.4 988.8 S4 41mph Cloudy, mild, rain & gales eve. 25 12.1 5.3 8.7 0.9 73 8.6 992.1 SW4 41mph Sunny periods, shower noon. 26 8.6 4.5 6.55 3.8 86 4.3 983.2 SW2 26mph Rain o/night, sunny, shower eve. 27 5.8 2.5 4.15 2.3 92 0.0 985.6 WSW2 16mph Bright start, cloudy, cool. 28 4.2 2.3 3.25 0.6 84 0.0 1006.3 WNW2 20mph Sunny periods, cool. 29 4.7 0.2 2.45 0.7 85 0.0 1019.4 WSW2 16mph Ground frost o/night, sunny periods. 30 5.8 1.7 3.75 5.3 97 7.9 1012.8 S2 14mph Rain all day. 31 6.7 5.2 5.95 4.4 93 0.8 1020.3 WNW1 9mph Cloudy. Monthly Average 8.4 3.7 6.1 82.0 63.0 1008.2 Annual 15.5 8.4 11.9 79.4 511.3 1013.4 Average