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March was cooler and drier than usual, with a mean temperature of 17.4 degrees - 1.1 degrees below normal - and a monthly rainfall of 52.6 millimetres, 14.3 millimetres less than normal. The total rainfall so far this year is 77.7 millimetres, 44% below the usual 138.3 millimetres seen in the same period.
The Hong Kong Obesrvatory said under the influence of a northeast monsoon, March started with a spell of rainy, cold and generally overcast weather. Weather turned bright and pleasant when the clouds dispersed on March 5.
Mist and fog affected the territory on the 10th and 11th when a maritime airstream established itself over the south China coast.
A cold front moved across the south China coast on March 12, bringing rainy and appreciably colder weather with temperature falling from about 22 degrees in the early morning to a minimum of about 10 degrees that night.
Lowest March temperature in 17 years
Temperature dropped to the month's lowest of 9.5 degrees on March 13, also the lowest in March since 1988. While the weather remained cloudy and cold in the following two days, it turned humid and foggy on the 16th when a maritime airstream replaced the northeast monsoon.
It was mild with sunny periods on the 17th, but clouds returned and it became cooler with the passage of a cold front the next morning. Clouds dispersed and there were long periods of sunshine on March 19 and 20. Cloudy conditions returned on the 21st as winds freshened from the east.
Fog patches developed again on March 22. Isolated thunderstorms developed and brought more than 10 millimetres of rain to the eastern part of Hong Kong Island.
Another cold front arrived on March 23 and cleared the fog. The associated rainband brought more than 15 millimetres of rain to parts of Hong Kong Island that evening. Cloudy and cool weather prevailed in the next three days.
Two collisions amid dense fog
A humid maritime airstream brought dense fog on March 28 and the visibility fell below 100 metres in the eastern part of the Hong Kong waters that morning. A passenger ferry bound for Nan Sha collided with a barge off the coast of Tsing Yi amid heavy fog, slightly injuring 15 people.
On the same morning, a fishing boat collided with a ship south of Hong Kong Island, tossing six people overboard. They were rescued without sustaining any injury.
Under the influence of a trough of low pressure, it was cloudy with some rain and fog patches on March 29. A fresh easterly airstream arrived in the small hours of the 30th, bringing some rain and much cooler weather in the last two days of the month.
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