Station Name: COLOMBO WMO Station Number: 43466 National I.D. Number: Country: SRI LANKA WMO Region: REGION II - ASIA Latitude: 06d 54m N Longitude: 079d 52m E Elevation: 7 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) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 26.6 Feb 26.9 Mar 27.7 Apr 28.2 May 28.3 Jun 27.9 Jul 27.6 Aug 27.6 Sep 27.5 Oct 27.0 Nov 26.7 Dec 26.6 Annual NA Ann-NCDC 27.4 ------------------ Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MAX_VAL (Statistic 04): Maximum Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN MAX_VAL Month -------------------------- Jan 31.0 35.2 Feb 31.2 35.6 Mar 31.7 36.0 Apr 31.8 35.2 May 31.1 32.8 Jun 30.4 33.5 Jul 30.0 32.2 Aug 30.0 32.2 Sep 30.2 32.2 Oct 30.0 33.6 Nov 30.2 34.0 Dec 30.4 34.2 Annual NA NA Ann-NCDC 30.7 NA -------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MIN_VAL (Statistic 05): Minimum Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN MIN_VAL Month -------------------------- Jan 22.3 16.4 Feb 22.7 18.9 Mar 23.7 17.7 Apr 24.6 21.2 May 25.5 20.7 Jun 25.5 21.4 Jul 25.1 21.4 Aug 25.1 21.6 Sep 24.8 21.2 Oct 24.0 21.0 Nov 23.2 18.6 Dec 22.8 18.1 Annual NA NA Ann-NCDC 24.1 NA -------------------------- Element 05: Dew Point Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 21.5 Feb 22.3 Mar 23.5 Apr 24.5 May 24.9 Jun 24.5 Jul 23.9 Aug 23.7 Sep 23.7 Oct 23.7 Nov 23.2 Dec 22.5 Annual NA Ann-NCDC 23.5 ------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 62.0 Feb 69.0 Mar 130.0 Apr 253.0 May 382.0 Jun 186.0 Jul 125.0 Aug 114.0 Sep 236.0 Oct 369.0 Nov 310.0 Dec 168.0 Annual NA Ann-NCDC 2404.0 ------------------ Element 11: Relative Humidity (%) MN_DAYT (Statistic AM): Daytime Average MN_NITE (Statistic PM): Nighttime Average -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MN_DAYT MN_NITE Month -------------------------- Jan 69.0 85.0 Feb 69.0 87.0 Mar 71.0 89.0 Apr 75.0 91.0 May 78.0 88.0 Jun 79.0 87.0 Jul 78.0 87.0 Aug 77.0 87.0 Sep 78.0 88.0 Oct 78.0 91.0 Nov 76.0 92.0 Dec 73.0 89.0 Annual NA NA Ann-NCDC 75.1 88.4 -------------------------- Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1011.1 Feb 1010.6 Mar 1010.2 Apr 1009.1 May 1008.3 Jun 1009.0 Jul 1009.0 Aug 1009.4 Sep 1009.9 Oct 1010.3 Nov 1010.5 Dec 1010.6 Annual NA Ann-NCDC 1009.8 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 25.5 Feb 26.1 Mar 28.7 Apr 30.7 May 31.5 Jun 30.5 Jul 29.5 Aug 29.1 Sep 29.3 Oct 29.2 Nov 28.5 Dec 27.1 Annual NA Ann-NCDC 28.8 ------------------ Element 15: Sunshine Statistic 44: Mean Number of Hours Qualifier: 06: Mean Daily Value Qualifier: NCDC: Mean Monthly Value Computed by NCDC from Mean Daily Values Provided by Member -------------------------- byr: 1961 1961 eyr: 1990 1990 Qualifier: 06 NCDC Month -------------------------- Jan 8.0 248.0 Feb 8.8 246.4 Mar 8.9 275.9 Apr 7.8 234.0 May 6.5 201.5 Jun 6.5 195.0 Jul 6.5 201.5 Aug 6.5 201.5 Sep 6.3 189.0 Oct 6.5 201.5 Nov 7.0 210.0 Dec 7.0 217.0 Annual NA 2621.3 Ann-NCDC NA 2621.3 -------------------------- Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.0 Feb 1.7 Mar 1.6 Apr 1.5 May 2.0 Jun 2.3 Jul 2.1 Aug 2.2 Sep 2.0 Oct 1.6 Nov 1.5 Dec 1.8 Annual NA Ann-NCDC 1.9 ------------------ Element 17: Wind Direction (degrees) PREVAIL (Statistic 41): Prevailing ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 010.0 Feb 320.0 Mar 230.0 Apr 220.0 May 230.0 Jun 240.0 Jul 240.0 Aug 240.0 Sep 240.0 Oct 230.0 Nov 340.0 Dec 050.0 Annual NA Ann-NCDC NA ------------------ Element 20: Sky Cover (Cloud Cover) (okta) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.3 Feb 4.0 Mar 4.1 Apr 5.5 May 6.1 Jun 6.2 Jul 6.4 Aug 6.3 Sep 6.2 Oct 6.1 Nov 5.6 Dec 5.1 Annual NA Ann-NCDC 5.5 ------------------ Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 3.0 Feb 5.0 Mar 11.0 Apr 18.0 May 11.0 Jun 4.0 Jul 3.0 Aug 2.0 Sep 3.0 Oct 9.0 Nov 11.0 Dec 8.0 Annual NA Ann-NCDC 88.0 ------------------