The Eastern Pacific also saw an incredibly above-average year with 23 named systems, reaching the highest Accumulated Cyclone Energy (ACE) on record in the basin.

The North Indian Ocean was also above-average, documented seven named storms, making it the second-most active season in the basin's history since reliable records began.

Activity across the Southern Hemisphere's three basins—South-West Indian, Australian, and South Pacific—was spread evenly, with each region recording seven named storms apiece.

The accumulated cyclone energy (ACE) index for the 2018 (seven basins combined), as calculated by Colorado State University (CSU) was 1108.4 units, the second-highest since 1997.

[1] Additionally, high quantities of Saharan dust along with stronger than average upper-level wind shear over the tropical Atlantic created an unfavorable atmospheric environment.

September featured the most activity, with Florence, Gordon, Helene, Isaac, Joyce, Tropical Depression Eleven, Kirk, and Leslie also forming or existing in the month.

[16] Around the same time, Tropical Storm Ileana paralleled the southwestern coast of Mexico, bringing heavy rainfall to the region.

[19] Hurricane Olivia became the first tropical cyclone in recorded history to make landfall on the islands of Maui and Lanai on September 12.

[23] October yielded an above-average number of tropical cyclones with three named storms forming – Tara, Vicente, and Willa.

[25] Rosa and Sergio both made landfall on the Baja California Peninsula during October, bringing gale-force winds and rain to the region before impacting western Mexico.

[28] Tropical Storm Vicente caused severe flooding and landslides in western Mexico at the same time as Willa, compounding the latter's effects in some areas.

Systems like Tropical Storms Son-tinh, Ampil, Josie, Wukong, Jongdari, Shanshan, Yagi, Leepi, Bebinca, and Rumbia formed between late July to early August.

After that, a low pressure quickly intensified into a deep depression and peaking as a tropical storm made landfall in Myanmar causing heavy downpour.

Following with Daye, Luban and Titli both formed in the Arabian sea and the Bay of Bengal respectively, causing heavy damages in Oman and Andhra Pradesh.

The season started with Tropical Depression 01U which was designated by the BOM, entered the basin on August 8 however quickly dissipated overseas.

A day later after Ava and Irving, a low pressure formed near Mauritius and explosively intensified into a powerful Category 3 equivalent tropical cyclone named Berguitta.

Following with Berguitta, a tropical depression formed northeast of Madagascar and caused heavy downpour, damage is unknown however MFR gave advisories.

The season ended with Flamboyan which was the first system to be named by TCWC Jarkata, it peaked as Category 1 equivalent tropical cyclone and dissipated on May 1 without making landfall.

Intense Tropical Cyclone Kenanga crossed into the basin from the Australian region, retaining its name assigned by TCWC Jakarta.

Gita was also one of the worst tropical cyclones to affect the island nation, causing significant agricultural and structural damages totalling in the hundreds of millions as well as a couple fatalities.

Cyclone Kelvin was unusual in that it maintained a healthy structure over land through a process known as the brown ocean effect, leading to tens of millions in damages.

At the same time, Tropical Depression 18U made landfall in Northern Territory, causing tens of millions in damage despite being a weak system.

In the middle of the month, Cyclone Eliakim made landfall in Madagascar, causing close to two dozen deaths and an unknown amount of damage.

In the middle of the month, Cyclone Sagar affected Yemen, Somalia, Djibouti, Ethiopia, causing tens of millions in damages and several dozen deaths.

Several days later, Cyclone Mekunu affected Yemen, Oman, and Saudi Arabia, causing hundreds of millions in damages and close to a few dozen deaths.

At the same time, Tropical Storm Alberto caused over a hundred million in damages and a dozen fatalities throughout the Northwest Caribbean and the Eastern United States.

In early June, Tropical Storm Ewiniar impacted South China and Vietnam, causing hundreds of millions in damages and over a dozen deaths.

Late in the month, Prapiroon affected Japan and the Korean Peninsula, killing a few people and causing over ten million in damages.

Later in the month, Tropical Storm Son-Tinh impacted the Philippines, South China, Vietnam, Laos, Thailand, and Myanmar, causing over a $235 million in damages and several dozen deaths.

Typhoon Kong-rey along with Hurricane Walaka both were Category 5 tropical cyclones on the Saffir–Simpson scale simultaneously in the Northern Hemisphere, marking the first time since 2005 that this rare occurrence happened.