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El Niño and La Niña
Latest status (March 2018)

Sea surface temperatures of the central and eastern equatorial Pacific have been cooler than normal since last October, albeit with a gradual warming trend in the past two months. Climate models around the world generally forecast the central and eastern equatorial Pacific to continue to warm in the next few months. Hence, even if the criteria for defining a La Niña event are reached by the end of March, the anomaly is expected to be short-lived and weak.

Sea surface temperature anomalies
(Source: National Oceanic and Atmospheric Administration, USA)

Figure 1    Sea surface temperature anomalies of 18 February – 17 March 2018 in degree Celsius.


1. The next update will be available in the latter half of April 2018.

Related links:
What are El Niño, La Niña, ENSO?
The impact of El Niño and La Niña on the climate of Hong Kong
Seasonal and annual rainfall charts
Blogs relating to El Niño/La Niña
References on El Niño and La Niña
Seasonal forecastAnnual outlookClimate change

For further information on this webpage, please contact Mr. F C Sham (tel:2926 3102,