Station Name: Alexander Bay WMO Station Number: 68406 National I.D. Number: Country: SOUTH AFRICA WMO Region: REGION I - AFRICA Latitude: 28d 34m S Longitude: 016d 32m E Elevation: 21 m In the following tables, byr = beginning year of normals or extremes data period eyr = ending year of normals or extremes data period NA = Not Applicable, data not submitted or not computed * = value > 0 but < units resolution Ann-NCDC = annual value computed by NCDC from monthly values provided by Members ========================================================== The normals data and climate variable descriptions are presented in these tables as provided by the WMO Member country. ========================================================== Element 01: Dry Bulb Temperature (deg C) MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value MN_HRLY (Statistic 69): Mean of Hourly Observations ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MNDLYMX MNDLYMI MN_HRLY Month ---------------------------------- Jan 24.3 15.1 19.1 Feb 24.0 15.1 18.8 Mar 24.3 14.2 18.3 Apr 23.5 12.5 17.0 May 22.9 10.6 15.7 Jun 21.5 9.9 14.8 Jul 20.6 8.7 13.8 Aug 20.1 8.9 13.7 Sep 20.6 9.9 14.5 Oct 21.5 11.3 15.7 Nov 22.7 12.9 17.1 Dec 23.4 14.2 18.2 Annual 22.5 11.9 16.4 Ann-NCDC 22.5 11.9 16.4 ---------------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MAX_VAL (Statistic 04): Maximum Value MNMLYMX (Statistic 18): Mean Monthly Maximum Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MAX_VAL MNMLYMX Month -------------------------- Jan 41.9 30.8 Feb 35.1 30.3 Mar 42.0 35.5 Apr 41.3 35.5 May 36.8 33.4 Jun 33.4 31.4 Jul 33.5 30.9 Aug 36.1 31.9 Sep 41.0 33.5 Oct 39.5 32.9 Nov 42.1 32.7 Dec 39.1 29.8 Annual 42.1 38.8 Ann-NCDC NA 32.4 -------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MIN_VAL (Statistic 05): Minimum Value MNMLYMI (Statistic 19): Mean Monthly Minimum Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MIN_VAL MNMLYMI Month -------------------------- Jan 10.5 11.6 Feb 8.7 10.9 Mar 8.1 10.2 Apr 5.7 8.1 May 4.6 5.9 Jun 1.9 4.8 Jul 2.6 4.3 Aug 2.3 4.4 Sep 3.7 5.3 Oct 5.8 7.1 Nov 7.6 9.3 Dec 8.6 10.3 Annual 1.9 3.4 Ann-NCDC NA 7.7 -------------------------- Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value MIN_MLY (Statistic 20): Minimum Monthly Value QUIN20% (Statistic 22): First Quintile QUIN40% (Statistic 23): Second Quintile QUIN60% (Statistic 24): Third Quintile QUIN80% (Statistic 25): Fourth Quintile MAX_MLY (Statistic 26): Maximum Monthly Value ------------------------------------------------------------------ byr: 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY Month ------------------------------------------------------------------ Jan 1.0 0.0 0.0 0.0 0.2 1.1 10.1 Feb 2.0 0.0 0.0 0.1 0.9 3.1 28.0 Mar 2.0 0.0 0.0 0.2 1.1 3.0 15.1 Apr 4.0 0.0 0.2 0.8 3.8 7.5 19.9 May 4.0 0.0 0.2 0.7 3.0 5.3 37.5 Jun 8.0 0.0 0.4 3.0 7.7 14.4 46.7 Jul 5.0 0.0 1.3 2.4 4.3 8.1 23.1 Aug 6.0 0.0 1.1 2.7 4.1 7.4 33.5 Sep 3.0 0.0 0.2 0.8 2.0 3.4 25.9 Oct .0 0.0 0.0 1.0 3.0 5.0 31.0 Nov .0 0.0 0.0 0.0 0.0 2.0 12.0 Dec 2.0 0.0 0.0 0.0 0.7 2.0 16.2 Annual 43.0 16.5 26.4 34.1 45.3 60.9 89.9 Ann-NCDC 37.0 NA NA NA NA NA NA ------------------------------------------------------------------ Element 11: Relative Humidity (%) MN_HRLY (Statistic 69): Mean of Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 77.0 Feb 79.0 Mar 78.0 Apr 78.0 May 73.0 Jun 70.0 Jul 73.0 Aug 75.0 Sep 75.0 Oct 75.0 Nov 75.0 Dec 77.0 Annual 75.0 Ann-NCDC 75.4 ------------------ Element 13: Station Pressure (hPa) MN_HRLY (Statistic 69): Mean of Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1012.7 Feb 1012.5 Mar 1013.5 Apr 1014.9 May 1017.5 Jun 1019.6 Jul 1020.5 Aug 1019.8 Sep 1018.4 Oct 1016.7 Nov 1014.9 Dec 1013.6 Annual 1016.2 Ann-NCDC 1016.2 ------------------ Element 14: Vapor Pressure (hPa) MN_HRLY (Statistic 69): Mean of Hourly Observations ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 16.7 Feb 16.8 Mar 16.2 Apr 14.8 May 12.9 Jun 11.6 Jul 11.2 Aug 11.5 Sep 12.2 Oct 13.1 Nov 14.3 Dec 15.9 Annual 13.9 Ann-NCDC 13.9 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 325.5 Feb 273.8 Mar 282.1 Apr 255.0 May 260.1 Jun 234.9 Jul 244.6 Aug 258.2 Sep 257.7 Oct 287.4 Nov 309.6 Dec 319.9 Annual 3308.8 Ann-NCDC 3308.8 ------------------ Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.0 Feb 0.0 Mar 1.0 Apr 1.0 May 1.0 Jun 2.0 Jul 2.0 Aug 2.0 Sep 1.0 Oct 1.0 Nov .0 Dec 0.0 Annual 11.0 Ann-NCDC 11.0 ------------------