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The Long Hot 2020 Summer
3 Sept. 2020

John Herbert, hong kong energy saving expert, BEAM expert
John Herbert
Director


Did big data help to predict the higher energy bills this summer? No, of course not, big data looks at historical data. However, the summer of 2020 was a record breaker, with the hottest July since records began and the hottest summer (June-August) on record HKO reported on 2 Sept. 2020.

With 16 hot days reported in August, that took the June - August total to 46 hot days so far this year, beating the 38 day record set in 2016.

credit: HKO Website



In addition to the weather, interrupted operations caused by varying degrees of lockdown exposed the flaws in the on/off culture, the lockdown damaged the demand side such that the fixed load equipment could not match it, wasting energy. New buildings, following the 2018 Building Energy Code are required to provide variable speed operation, in most cases that will better match the load to the demand.

Abstract from HKO Weather Report for August 2020

Mainly attributing to the warmer than normal sea surface temperature over the northern part of the South China Sea, August 2020 was hotter than usual in Hong Kong. The monthly mean temperature of 29.0 degrees was 0.4 degree above the normal figure of 28.6 degrees. Together with the extremely high temperature weather in June and July, Hong Kong experienced the hottest summer on record from June to August 2020. The mean temperature of 29.6 degrees, mean minimum temperature of 27.7 degrees and mean maximum temperature of 32.6 degrees for June to August 2020 were all the highest on record for the same period. There were 16 very hot days in August 2020, the highest number of very hot days on record for August. Moreover, from January to August, the annual number of very hot days in 2020 already reached 43, which is 32.8 days above the annual normal and broke the previous highest record of 38 days set in 2016. The number of hot nights up to August 2020 also reached 46, on par with the highest record in 2019. The monthly rainfall was 448.4 millimetres, about 4 percent above the normal figure of 432.2 millimetres. The accumulated rainfall recorded in the first eight months of the year was 1537.2 millimetres, about 19 percent below the normal figure of 1905.5 millimetres for the same period. FULL report



About the Author

John Herbert is a veteran chief engineer with more than 30 years international engineering experience, educated in the United Kingdom, he has worked in the United Kingdom and then across Asia for more than two decades engaged by international and local companies. He is a Hong Kong Registered Energy Assessor (REA), a BEAM Professional, and stationed in Hong Kong.



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tags: summer, big data, Hong Kong, weather, heat, Kelcroft

date: 22-09-20
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