Watch more in iWantv or TFC.tv

MANILA - A weaker southwest monsoon (habagat) has been observed, marking the transition to cooler weather, state weather bureau PAGASA said Wednesday.

"Malapit na pong magpalitan ang habagat at amihan. Ngayon po may habagat pa rin pero napakahina na," PAGASA weather forecaster Nikos Peñaranda told DZMM.

He also said the northeast monsoon is expected to start by October.

Habagat is still expected to bring scattered rains in Visayas and southern parts of Mindanao until the monsoon changes.

Peñarada said certain parts of extreme northern Luzon may start to experience cooler weather due to the typhoons, but this is not yet because of the northeast monsoon.

"Sa extreme northern Luzon, nakakahila po 'yung bagyo ng may kalamigan na hangin, dahil nga doon sa lokasyon niya. Hindi pa po ito 'yung amihan dahil hindi pa po dumidiretso doon sa ibang parte ng Pilipinas at Indonesia," he said.

The northeast monsoon, locally known as "amihan," is usually associated with the cool weather during the holiday season.

Meanwhile, typhoon Paeng, although still inside the Philippine area of responsibility (PAR), is still not expected to have any direct effect.

"Napakaliit na ng tsansa na ito po ay makaapekto sa Batanes," Peñaranda said.

As of 3 p.m., Paeng was last seen 755 kilometers east of Basco, Batanes. It has maximum sustained winds of 160 kilometers per hours with gusts of up to 195 kph.

The typhoon is moving slowly towards the southern part of Japan and is expected to leave PAR Saturday morning.