Brunei has entered the inter-monsoon period, which is the transition period after the northeast monsoon and before entering the southwest monsoon and the inter-monsoon period. It is expected to last until the end of May, said the Brunei Darussalam Meteorological Department (BDMD).
During the period, the absence of prevailing monsoonal wind flow allowed local wind effects to play an important role in governing the daily weather and based on climatological records, the frequency of thunderstorms occurrences is high during the inter-monsoon period in comparison to the other months.
The average rain days for April is 16 days and May is 18 days and throughout the period, the Sultanate normally experiences fair weather in the morning and isolated coastal showers occur around midday and thunderstorms occur over the inland during the afternoon, spreading and affecting coastal and sea areas at night and may persist to early morning of the following day.
Light wind blows from variable directions in the morning and at night, and from Northwest in the afternoon.
Wave condition at sea is generally at slight state.