Tropical Storm Gilma was the only cyclone in the season to make landfall, crossing the Hawaiian Islands, although there were numerous near-misses.

In the Eastern Pacific, there were seven cyclones peaking as a tropical storm, and six hurricanes, of which two reached Category 3 intensity or higher on the Saffir–Simpson scale.

[3] Tropical Storm Gilma made the only landfalls of the season in the Hawaiian Islands, causing some rainfall, but no direct deaths or damage occurred as a result of it.

A convective band on the north and west sides of the system became well-defined, and anticyclonic outflow allowed for initial organization.

[9] After forming, the depression tracked west-southwestward and intensified due to disrupted outflow from a large air stream disturbance.

It developed further as it moved northward toward the southwest coast of Mexico, and had organized sufficiently to be named Tropical Storm Aletta on June 17.

[15] Satellite imagery first detected a low-level circulation on June 20, associated with some heavy convection, 200 miles (320 km) south of the Mexico–Guatemala border, and it intensified into a tropical depression.

[16] A system developed in the eastern Pacific, and later strengthened into a tropical depression on July 1, when it obtained a better defined low-level circulation.

Carlotta began to lose its deep convection, and weakened into a tropical depression on July 13 as it moved into cooler waters.

A high pressure system over the western United States and northern Mexico forced Daniel and an upper-level low on parallel west-northwest paths.

[26] Continuing generally westward, the thunderstorm activity fluctuated,[27] and slowly developing, it intensified into Tropical Storm Emilia on July 29.

Satellite estimates indicated that Fabio reached its maximum intensity later on August 3, with a well-defined eye with very deep convection surrounding it.

The Central Pacific Hurricane Center issued a tropical storm watch for the Big Island on August 4, due to the threatening west-northwest turn towards it.

However, the retreat of a trough later turned Fabio back to the west and the CPHC discontinued the tropical storm watch on August 5.

Its west-northwest motion continued, due to an area of high pressure to its north, and Hector intensified into a hurricane on August 2.

The wave developed more organized convection when it entered the region, and it turned into a tropical depression on August 5, while 165 miles (266 km) south of Oaxaca, Mexico.

A tropical depression formed in the East Pacific on August 16, 150 miles (240 km) southwest of Manzanillo, Mexico, based on satellite estimates.

John degenerated to a tropical depression on August 18 due to a lack of convection, made a loop while less than 100 miles (160 km) south of the southern tip of Baja California.

Initially, the system moved northwest towards cooler waters[50] as the location of the low-level circulation was to the southwest of the deep convection associated with the cyclone.

[52] It weakened and became loosely defined due to upper-level wind shear, and the storm lost all of its convection before dissipating and degenerating into a low-level swirl.

[7] As Uleki drifted towards the Hawaiian Islands, tropical storm watches were issued for Oahu, Kauai, and Niihau on September 3.

[7] Nineteen people were also rescued from rough surf, with five- to six-foot (1.5 to 1.8 meter) waves, off the coast of beaches in Hawaii.

However, the convection associated with the system began to organize when it entered the Pacific, and it strengthened into a tropical depression on August 29, while located 300 miles (480 km) south-southeast of Acapulco, Mexico.

The easterly shear associated with an anticyclone south of Baja California, which caused Kristy's convection to be forced west of the low-level center of the system, and therefore weakened it.

[56] However, Kristy produced heavy rains and widespread flooding in the Mexican states of Chiapas and Oaxaca; as a result, several rivers overflowed their banks.

[57] The outer rainbands of Kristy delayed the rescue of the victims of a Brazilian-made aircraft that crashed west of the Sierra Madre Occidental mountain range.

[61] The cyclone remained stationary due to weak low-level steering currents, later drifting to the north-northwest with an area of deep convection causing rain on the Mexican coast.

The system developed organized deep convection, and strengthened into a tropical depression on September 21, while 300 miles (480 km) southeast of Acapulco, Mexico.

[75][76] Strong vertical southwesterly wind shear affected the cyclone, with the center of circulation later seen on the west side of the lessening amount of deep convection.

[34] Guatemala's ports along its Pacific coast were closed and people in El Salvador were evacuated from low-lying areas due to the storm.