Department of Water Affairs, Namibia HYMONTH V86 Output 29/07/2010 Site 0785490 Okahua Site 0785490.RN Variable 10.00 Total Rainfall in Millimetres Figures are for period starting 800 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 1916/17 [ ] [ ] [ ] [ ] [ ] 7.5 66.4 8.6 [ ] [ ] [ ] [ ] [27.5] [82.5] 273 1917/18 8.5 37.5 34.5 52.3 128.2 135.8 0.0 4.0 0.0 0.0 0.0 0.0 33.4 400.8 0 1918/19 37.3 77.0 132.1 75.3 63.1 68.1 32.1 [ ] [ ] [ ] [ ] [ ] [69.3] [485.0] 153 1919/20 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] 366 1920/21 [ ] 167.8 9.7 60.2 196.3 102.4 45.0 77.3 0.0 0.0 0.0 0.0 [59.9] [658.7] 31 1921/22 0.0 10.8 11.8 102.5 96.5 6.3 0.0 0.0 0.0 0.0 [ ] [ ] [22.8] [227.9] 61 1922/23 4.0 14.1 20.1 112.8 195.2 197.4 83.5 13.1 0.0 0.0 0.0 0.0 53.4 640.2 0 1923/24 6.1 8.3 14.5 7.8 41.3 30.1 6.5 0.0 0.0 0.0 0.0 0.0 9.6 114.6 0 1924/25 10.5 16.8 23.3 21.8 120.9 103.6 64.6 10.9 0.0 16.0 0.0 0.0 32.4 388.4 0 1925/26 0.5 16.9 24.2 46.0 11.9 22.8 68.8 9.3 16.7 0.0 0.0 0.0 18.1 217.1 0 1926/27 1.7 10.8 82.3 64.4 30.1 93.8 65.0 0.0 0.0 0.0 0.0 0.0 29.0 348.1 0 1927/28 6.0 83.2 22.1 142.7 13.3 140.3 52.4 9.5 0.0 0.0 0.0 5.2 39.6 474.7 0 1928/29 0.0 15.8 3.4 26.6 55.8 89.4 0.0 0.0 0.0 0.0 0.0 10.3 16.8 201.3 0 1929/30 17.1 22.7 7.0 81.9 166.5 38.7 16.9 0.0 0.0 0.0 0.0 0.0 29.2 350.8 0 1930/31 17.7 22.2 14.4 122.2 153.5 43.1 1.7 0.0 0.0 0.0 0.0 0.0 31.2 374.8 0 1931/32 0.8 49.2 55.7 33.9 60.8 211.3 0.0 7.0 0.0 0.0 0.0 0.0 34.9 418.7 0 1932/33 30.2 40.9 25.6 17.0 29.8 20.8 1.0 0.0 0.0 [ ] [ ] [ ] [18.4] [165.3] 92 1933/34 1.7 12.9 168.6 274.5 220.5 203.5 62.3 0.2 0.0 0.0 0.0 0.0 78.7 944.2 0 1934/35 2.6 53.5 96.6 152.2 64.4 36.5 13.6 1.1 0.0 0.0 0.0 14.5 36.3 435.0 0 1935/36 1.6 53.7 34.0 250.9 40.2 119.3 12.0 45.6 0.0 0.0 0.6 0.0 46.5 557.9 0 1936/37 4.5 0.0 62.1 74.6 123.7 33.4 41.5 0.0 0.0 0.0 0.0 0.0 28.3 339.8 0 1937/38 21.1 50.2 76.9 129.5 37.4 23.2 125.0 67.7 5.7 0.0 0.0 0.0 44.7 536.7 0 1938/39 10.7 111.6 37.1 41.3 68.9 196.7 30.1 3.0 0.0 0.0 0.0 0.3 41.6 499.7 0 1939/40 32.7 10.6 26.1 164.0 32.9 112.8 21.6 0.0 0.0 0.0 0.0 0.8 33.5 401.5 0 1940/41 2.8 2.0 61.4 23.3 48.1 11.4 5.2 0.0 0.0 0.0 0.0 0.0 12.8 154.2 0 1941/42 21.4 0.0 4.4 21.7 264.6 137.8 91.5 1.5 0.0 1.0 0.0 3.1 45.6 547.0 0 1942/43 7.4 35.8 188.1 9.2 41.9 43.9 46.9 0.0 0.0 0.0 2.8 0.0 31.3 376.0 0 1943/44 0.0 19.6 113.1 182.9 25.9 88.6 0.0 0.0 0.0 0.0 0.0 1.0 35.9 431.1 0 1944/45 3.3 28.2 19.0 17.5 30.9 32.6 11.9 18.5 0.0 0.0 0.0 0.0 13.5 161.9 0 1945/46 0.3 84.3 160.0 114.7 9.7 4.6 18.6 0.0 0.0 0.0 0.0 1.0 32.8 393.2 0 1946/47 5.1 27.9 53.0 96.6 183.3 142.0 27.7 0.0 3.0 0.0 0.0 4.3 45.2 542.9 0 1947/48 0.0 4.1 70.3 152.7 171.7 9.6 3.6 6.6 0.0 5.6 0.0 0.0 35.4 424.2 0 1948/49 4.3 76.8 12.2 111.7 119.2 306.1 210.8 0.0 0.0 0.0 0.0 0.0 70.1 841.1 0 1949/50 10.9 10.4 33.2 66.7 86.0 134.4 59.9 44.0 0.0 0.0 2.3 2.8 37.6 450.6 0 1950/51 0.0 25.9 136.6 54.8A 64.1A 49.6A 117.9A 40.5A 0.0 0.0 0.0 10.4A 41.6A 499.8A 0 1311 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... A ... Accumulated Data [ ] Data Not Recorded Department of Water Affairs, Namibia HYMONTH V86 Output 29/07/2010 Site 0785490 Okahua Site 0785490.RN Variable 10.00 Total Rainfall in Millimetres Figures are for period starting 800 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 1951/52 20.9A 39.1A 48.8A 48.4 134.5 5.3 10.6 0.0 16.3 0.0 0.0 1.4 27.1A 325.3A 0 1952/53 23.6 40.3 34.5 61.6 104.5 121.0 0.0 15.5 0.0 0.0 0.0 8.0 34.1 409.0 0 1953/54 22.5 21.0 79.8 235.3 88.2 174.5 38.0 0.0 0.0 0.0 0.0 6.5 55.5 665.8 0 1954/55 0.4 37.0 64.0 38.5 151.1 65.7 87.9 0.2 18.0 0.0 0.0 0.0 38.6 462.8 0 1955/56 30.2 121.5 24.5 98.5 172.5 118.1 34.2 0.0 0.0 0.0 0.0 1.9 50.1 601.4 0 1956/57 4.5 13.5 38.5 70.5 106.0 72.8 6.0 3.5 0.0 9.0 0.0 1.1 27.1 325.4 0 1957/58 5.0 73.8 118.1 101.5 71.5 68.0 6.3 0.0 0.0 0.0 0.0 1.5 37.1 445.7 0 1958/59 0.0 5.5 34.5 28.7 119.3 32.7 14.0 0.0 0.0 0.0 0.0 0.0 19.6 234.7 0 1959/60 0.2 28.6 37.0 12.0 214.7 31.5 5.2 48.0 0.0 0.0 0.0 0.0 31.4 377.2 0 1960/61 4.0 31.9 34.6 40.7 53.2 74.7 44.2 19.7 9.6 0.0 0.0 0.0 26.1 312.6 0 1961/62 0.0 23.7 1.0 3.0 31.7 4.0 11.0 0.0 0.0 0.0 20.7 0.0 7.9 95.1 0 1962/63 44.0 5.0 10.7 325.4 8.5 134.8 87.4 11.0 0.0 0.0 0.0 0.7 52.3 627.5 0 1963/64 22.0 77.3 12.0 14.9 12.2 41.4 64.5 1.0 0.0 0.0 0.0 0.0 20.4 245.3 0 1964/65 0.2 9.9 13.2 34.5 22.0 75.1 106.7 0.0 0.0 0.0 0.0 0.0 21.8 261.6 0 1965/66 27.0 28.7 0.5 231.0 134.0 73.4 125.6 0.0 0.0 0.0 0.0 42.5 55.2 662.7 0 1966/67 4.5 22.3 96.5 112.4 211.2 21.0 21.0 32.7 0.0 0.0 0.0 5.0 43.9 526.6 0 1967/68 0.0 61.4 49.1 113.9 32.5 131.6 0.0 36.0 3.5 0.0 0.0 0.0 35.7 428.0 0 1968/69 12.2 86.3 28.9 26.5 103.7 80.5 51.8 0.0 0.0 0.0 0.0 8.8 33.2 398.7 0 1969/70 0.0 16.0 35.0 64.3 104.4 23.4 8.0 0.0 0.0 0.0 0.0 0.0 20.9 251.1 0 1970/71 57.5 16.7 60.6 66.5 237.6 60.0 35.0 1.0 2.5 0.0 0.0 0.0 44.8 537.4 0 1971/72 0.0 20.5 7.4 114.8 0.0 184.2 89.0 0.0 0.0 0.0 0.0 0.0 34.7 415.9 0 1972/73 11.0 7.0 6.4 46.4 26.6 73.3 17.5 0.0 0.0 0.0 0.0 0.0 15.7 188.2 0 1973/74 41.3 14.7 19.7 103.6 207.0 46.0 60.5 3.5 7.5 0.0 0.0 0.0 42.0 503.8 0 1974/75 12.0 57.0 20.5 47.3 80.0 165.5 60.5 17.8 0.0 0.0 0.0 0.0 38.4 460.6 0 1975/76 0.0 22.7 44.3 245.5 106.5 93.5 5.5 2.5 0.0 0.0 0.0 0.0 43.4 520.5 0 1976/77 11.7 2.0 10.5 78.0 221.0 88.0 127.5 0.0 0.0 0.0 0.0 0.0 44.9 538.7 0 1977/78 81.5 15.5 75.5 244.6 197.4 39.9 20.0 7.6 0.0 0.0 11.0 0.0 57.8 693.0 0 1978/79 0.0 22.6 23.5 82.0 216.3 20.0 31.5 20.0 0.0 3.5 0.0 22.0 36.8 441.4 0 1979/80 13.5 66.5 33.0 95.7 153.6 117.8 0.0 0.0 0.0 0.0 3.5 23.0 42.2 506.6 0 1980/81 0.0 7.5 25.6 18.2 84.5 71.7 60.1 0.0 0.0 0.0 0.0 0.0 22.3 267.6 0 1981/82 0.0 20.2 4.0 28.5 65.8 41.5 26.0 0.0 0.0 0.0 0.0 1.5 15.6 187.5 0 1982/83 1.5 6.5 94.0 94.4 27.8 36.4 51.1 13.5 8.8 0.0 0.0 0.0 27.8 334.0 0 1983/84 4.5 106.6 52.1 4.3 89.6 60.8 93.3 5.5 0.0 0.0 0.0 0.0 34.7 416.7 0 1984/85 18.0 11.6 10.7 80.0 105.7 27.0 32.8 0.0 0.0 0.0 0.0 0.0 23.8 285.8 0 1985/86 23.0 31.1 40.8 79.6 43.5 165.0 38.5 0.3 0.0 0.0 0.0 3.5 35.4 425.3 0 1311 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... A ... Accumulated Data [ ] Data Not Recorded Department of Water Affairs, Namibia HYMONTH V86 Output 29/07/2010 Site 0785490 Okahua Site 0785490.RN Variable 10.00 Total Rainfall in Millimetres Figures are for period starting 800 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 1986/87 64.5 13.5 15.7 9.0 277.2 22.5 51.7 5.5 0.0 0.0 0.0 0.0 38.3 459.6 0 1987/88 27.0 5.0 28.5 160.3 39.5 6.0 43.0 9.5 0.0 0.0 0.0 0.0 26.6 318.8 0 1988/89 6.5 21.5 74.5 118.5 89.0 8.5 26.5 13.5 0.0 0.0 0.0 0.0 29.9 358.5 0 1989/90 2.0 1.0 0.0 69.5 77.5 30.5 63.0 0.0 0.0 0.0 0.0 0.0 20.3 243.5 0 1990/91 1.2 23.1 37.4 122.7 198.1 78.3 0.0 0.0 0.0 0.0 0.0 55.5 43.0 516.3 0 1991/92 43.0 52.0 68.5 33.2 19.0 49.4 15.0 0.0 0.0 0.0 0.0 6.5 23.9 286.6 0 1992/93 4.0 6.5 29.4 57.7 146.4 82.0 46.5 1.8 0.0 0.0 0.0 0.0 31.2 374.3 0 1993/94 35.8 41.6 20.9 220.8 81.0 30.5 83.0 0.0 0.0 0.0 0.0 0.0 42.8 513.6 0 1994/95 0.0 52.3 19.0 10.0 71.1 51.6 8.0 8.5 0.0 0.0 0.0 0.0 18.4 220.5 0 1995/96 3.0 4.8 26.0 [ ] 47.2 6.5 12.5 0.0 0.0 2.0 0.0 0.0 [9.3] [102.0] 31 1996/97 0.0 30.0 105.5 205.8 77.0 153.2 8.0 1.7 0.0 0.0 0.0 45.5 52.2 626.7 0 1997/98 10.1 13.0 124.8 28.0 12.0 19.0 4.0 0.0 0.0 0.0 0.0 1.0 17.7 211.9 0 1998/99 18.0 9.6 45.4 46.2 42.3 69.5 0.0 27.2 3.5 0.0 0.0 0.0 21.8 261.7 0 1999/ 0 1.2 75.9 121.6 71.2 168.2 94.0 33.5 [ ] 0.0 0.0 0.0 0.0 [51.4] [565.6] 31 2000/ 1 0.0 0.0 17.0 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [5.7] [17.0] 273 1311 Tot Mean 12.0A 32.8A 46.5A 88.3A 98.5A 76.4A 39.4A 8.3A 1.2 0.5 0.5 3.7A [34.1] [399.3] Mean Med. 4.5A 22.3A 34.0A 70.5A 82.8A 68.0A 31.5A 0.3A 0.0 0.0 0.0 0.0A Med. Max 81.5A 167.8A 188.1A 325.4A 277.2A 306.1A 210.8A 77.3A 18.0 16.0 20.7 55.5A [78.7] [944.2] Max Min 0.0A 0.0A 0.0A 3.0A 0.0A 4.0A 0.0A 0.0A 0.0 0.0 0.0 0.0A [5.7] [17.0] Min OK 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% OK Cnt 82 83 83 81 82 83 83 81 81 80 79 79 84 84 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... A ... Accumulated Data [ ] Data Not Recorded