4 -
As winds moderated, the weather turned fine on May 6. It became cloudy with some rain patches the next three days.
Temperatures rose rapidly on May 10 as winds turned to the southeast and the weather cleared up.
A fresh easterly airflow reached the south China coast early on May 11 and the weather became cloudy with some rain patches on May 11 and 12.
More rain fell on May 13 where over 30 millimetres were recorded mainly over the northern part of the New Territories.
It was sunny on May 14 and the warm weather continued the next day.
A continental airstream reached the territory and brought cooler and cloudier weather on May 16 and 17. Cloudy conditions persisted but temperatures were on the rise in the next three days.
A trough of low pressure traversed the coast of Guangdong during the night of May 21. As it reached Hong Kong, it weakened rapidly. Although thundery showers brought more than 20 millimetres to Lantau Island, only traces of rainfall were recorded in other areas of Hong Kong.
The weather remained cloudy and slightly cooler with light rain patches on May 22 to 24.
Under the influence of a maritime airflow, it was fine and hot apart from some isolated showers from May 25 until the end of the month.
The month's highest temperature of 34.2 degrees was reached in a sunny and very hot afternoon of May 30.
No tropical cyclone activity was observed over the western North Pacific and the South China Sea in May.
Details of the issuance/hoisting and cancellation/lowering of various warnings/signals in the month are summarized in Table 1.1. Monthly meteorological figures and departures from normal of May are tabulated in Table 1.2.