F 5
The relative humidity was considerably above normal in January and moderately above in February, March and December. The mean relative humidity for the year was 79% as against 78% in 1927 and 77% for the past 45 years. It frequently exceeded 95% and the lowest for the year was 25% on November 21 as against 24% in 1927 and 4% for the past 45 years.
Rainfall at four Stations.-In the following table the monthly rainfall for the year 1928 at the Observatory is compared with the fall at the Police Station, Tai Po; the Botanical Gardens; and the Matilda Hospital, Mount Kellet:
Month Observatory Police Station (Kowloon) Botanical Gardens (Hong Kong) Matilda Hospital (Hong Kong) January 1.880 inches 1.19 inches 2.17 inches 1.25 inches February 3.570 inches 2.18 inches 3.87 inches 4.05 inches March 5.185 inches 3.26 inches 6.37 inches 5.52 inches April 4.105 inches 4.81 inches 6.68 inches 7.88 inches May 18.410 inches 13.61 inches 19.13 inches 16.72 inches June 15.130 inches 16.91 inches 13.64 inches 10.80 inches July 4.80 inches 3.71 inches 3.37 inches 1.95 inches August 12.910 inches 8.63 inches 17.98 inches 11.45 inches September 3.915 inches 3.50 inches 6.3+ inches 7.50 inches October 0.435 inches 0.09 inches 0.38 inches 0.48 inches November 0.815 inches 3.94 inches 0.94 inches 0.74 inches December 0.00 inches 0.02 inches 0.00 inches ... Year 71.455 inches 61.83 inches 80.89 inches 68.34 inchesFloods. Little or no damage was caused by floods during the year 1928. The heaviest rainfall occurred at the Observatory as follows:
Period 1928 Amount Duration Greatest fall in 1 hour Mar. 6 5 to Mar. 7 13 hours 3.63 inches 29 h 0.80 inches Mar. 7 7 to Apr. 22 3 ... ... ... Apr. 30 to May 1 3.84 inches 58 h 1.06 inches June 2 19 to June ... 14.83 inches 75 h 1.70 inches July 2 11 + 13 to Aug. 6 18 3.58 inches ... 0.68 inches June 30 22 to July ... 4.71 inches 17 h 1.64 inches Aug. 2 13 ... ... ...