Temperature and rainfall of Hong Kong under the influence of El Niño

El Niño and La Niña

Temperature and rainfall of Hong Kong during El Niño

El Niño's impact on Hong Kong during spring (Mar-May)

El Niño's impact on Hong Kong during summer (Jun-Aug)

El Niño's impact on Hong Kong during autumn (Sep-Nov)

El Niño's impact on Hong Kong during winter (Dec-Feb)

Spring
Spring (Mar-May) temperature and rainfall of Hong Kong during El Niño in recent decades

	Temperature (?C)	Temperature category⁽¹⁾	Rainfall (mm)	Rainfall category⁽¹⁾
1983	22.1	Normal	972	Above normal
1987	22.7	Above normal	972	Above normal
1992	21.6	Below normal	1337	Above normal
1993	22.4	Normal	524	Normal
1998	23.6	Above normal	628	Normal
2015	23.7	Above normal	606	Normal

Summer
Summer (Jun-Aug) temperature and rainfall of Hong Kong during El Niño in recent decades

	Temperature (?C)	Temperature category⁽¹⁾	Rainfall (mm)	Rainfall category⁽¹⁾
1972	28.0	Normal	1548	Above normal
1982	28.0	Normal	1374	Above normal
1983	29.0	Above normal	923	Below normal
1987	28.3	Normal	1026	Normal
1991	28.6	Above normal	968	Normal
1993	28.8	Above normal	882	Below normal
1997	27.9	Below normal	2359	Above normal
2002	28.7	Above normal	924	Below normal
2009	28.9	Above normal	1065	Normal
2014	29.3	Above normal	1245	Normal
2015	29.4	Above normal	852	Below normal

Autumn
Autumn (Sep-Nov) temperature and rainfall of Hong Kong during El Niño in recent decades

	Temperature (?C)	Temperature category⁽¹⁾	Rainfall (mm)	Rainfall category⁽¹⁾
1972	25.2	Above normal	385	Normal
1976	23.6	Below normal	270	Below normal
1979	24.1	Below normal	518	Normal
1982	25.2	Above normal	726	Above normal
1986	24.4	Normal	439	Normal
1987	24.9	Above normal	298	Below normal
1991	24.6	Normal	476	Normal
1993	24.6	Normal	888	Above normal
1994	25.0	Normal	301	Below normal
1997	25.1	Above normal	353	Normal
2002	24.6	Normal	945	Above normal
2004	25.1	Above normal	170	Below normal
2006	25.4	Above normal	551	Normal
2009	25.2	Above normal	591	Above normal
2014	25.9	Above normal	282	Below normal
2015	26.1	Above normal	279	Below normal

Winter
Winter (Dec-Feb) temperature and rainfall of Hong Kong during El Niño in recent decades

	Temperature (?C)	Temperature category⁽¹⁾	Rainfall (mm)	Rainfall category⁽¹⁾
1972-1973	17.7	Above normal	95	Normal
1979-1980	16.4	Normal	59	Below normal
1982-1983	15.5	Below normal	317	Above normal
1986-1987	17.8	Above normal	70	Normal
1991-1992	16.5	Normal	195	Above normal
1994-1995	17.0	Above normal	177	Above normal
1997-1998	17.6	Above normal	209	Above normal
2002-2003	17.6	Above normal	101	Normal
2009-2010	17.3	Above normal	188	Above normal
2014-2015	16.7	Normal	118	Normal

Note:
1. Categorization of temperature/rainfall is based on the normal distribution constructed from climatological data in the previous 30 years. The categories are defined in such a way that the highest 30% and the lowest 30% of the normal distribution are classified as "above-normal" and "below-normal" respectively, while the middle 40% represents the normal range.