Near normal to below normal rainfall is predicted from northeast Asia through India, West Asia and its northern regions, reports said citing an APCC spokesman.
The Indian summer monsoon has been below normal already, with stagnation in the northward progression of its northern envelope.
According to the India Meterological Department, the El Nino weather phenomenon is likely to set in during September and affect rainfall.
El Nino is the warming of surface temperatures of the Pacific Ocean which adverselt affect rainfall patterns.
The APCC multi-model ensemble forecasts show that the equatorial Pacific Ocean will continue to warm into early fall.
The maximum warming is seen in the eastern tropical Pacific, indicating that an El Nino is not unlikely, the forecast said.
Meanwhile, the erratic phase of the monsoon was evident on Monday with east India slipping under an expansive wet phase. Heavy to extremely heavy rain lashed parts of east and northeast India overnight.
Monsoon otherwise stood still over the mainland, taking its time to revive after the latest away-sea storm, ‘Talim’ in the South China Sea, undid its progress.
Aiding the heavy rains in the east was a north-south trough running down from sub-Himalayan West Bengal and Sikkim to the North Bay of Bengal.
This formation is not considered helpful for the larger cause of the monsoon for the rest of India since entire moisture is getting offloaded in the area of the trough here.