These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.

The scope of this article is limited to the Pacific Ocean, north of the equator and west of the International Date Line.

Tropical Storms formed in the entire west Pacific basin were assigned a name by the Fleet Weather Center on Guam.

Typhoon June struck the Southern Japanese hitting the area west of Kanto especially hard.

Gusts at landfall just to the west of Macau reached 175 km/h in Waglan Island and 155 km/h in Hong Kong Observatory which were the strongest since November 10, 1900 when the mean hourly wind speed reached 113 km/h (71 mph or 61 kts) at the Royal Observatory in Tsim Sha Tsui, in par with Typhoon Gloria.