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    Climate Change in Hong Kong - Rainfall

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    Climate Change in Hong Kong
    <<Temperature

    Rainfall

    		 Mean sea level>>

    Annual rainfall and heavy rain days (hourly rainfall greater than 30 mm) have been recorded at the Hong Kong Observatory Headquarters since January and March 1884 respectively, except for a break during World War II from 1940 to 1946.

    Analysis of the annual rainfall showed that there was an increasing rate of 2.3 mm per year during 1884-2024.

    Annual rainfall at the Hong Kong Observatory Headquarters (1884-2024). Data are not available from 1940 to 1946.

    Annual rainfall at the Hong Kong Observatory Headquarters (1884-2024). Data are not available during 1940-1946.


    » Rainfall data

    » Rainfall projection

     

    Heavy Rain

    For the annual number of heavy rain days, there was an increasing rate of 0.1 day per decade during 1884-2024.

    Annual number of heavy rain days at the Hong Kong Observatory Headquarters (1884-2024). Data are not available from 1940 to 1946.

    Annual number of heavy rain days at the Hong Kong Observatory Headquarters (1884-2024). Data are not available during 1940-1946.

     

    Note: The increasing trends of annual rainfall and annual number of heavy rain days during 1884-2024 are statistically significant at 5% level.

     

     
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