The 2019 Pacific typhoon season was the annual cycle of tropical cyclone formation over the western North Pacific Ocean and the South China Sea, primarily in 2019. There were no official bounds, as tropical cyclones form all year round, though most storms in the basin typically form between July and November. The first tropical cyclone of the season, Tropical Storm Pabuk, developed in late December 2018; the final, Typhoon Phanfone, dissipated on December 29, 2019.

A total of 49 tropical depressions formed during the season; 29 of these developed into named tropical storms, of which 20 became severe tropical storms and 17 became typhoons. Additionally, five typhoons became super typhoons—an unofficial rank given by the United States Joint Typhoon Warning Center (JTWC) to storms with 1-minute maximum sustained wind speed of at least . Activity in the 2019 season was greater than normal, primarily due to high sea surface temperatures. El Niño conditions persisted from late 2018 to the second quarter of 2019. In February, Typhoon Wutip became the strongest recorded typhoon to occur during the month. The conditions became neutral during the northern summer, as strong activity occurred in the monsoon trough over Southeast Asia in August, promoting tropical cyclogenesis. In November, activity in the basin was driven by high sea surface temperatures along with an active phase of the Madden–Julian oscillation and equatorial waves.

Due to several very destructive tropical cyclones, the season was the costliest ever recorded. The most destructive system was Typhoon Hagibis, which inflicted damage to Japan that amounted to ¥1.88 trillion (US$17.3 billion) and killed 118 people, becoming the costliest typhoon when unadjusted for inflation until Typhoon Doksuri in 2023. In August, Typhoon Lekima struck China, becoming the second-costliest typhoon in Chinese history at the time. During the next month, Typhoon Lingling impacted the Korean Peninsula and killed eight people, and Typhoon Faxai made landfall over Japan, becoming the costliest disaster of 2019 until Hagibis. Typhoon Bualoi exacerbated the effects of Faxai and Hagibis, producing floods that caused damages of US$200 million and killed 13, despite not reaching land. The last two named storms, typhoons Kammuri and Phanfone, each made landfalls over the Philippines in December, causing ₱11.027 billion (US$212.910 million) of damages and 74 deaths combined.

The Japan Meteorological Agency (JMA) is the official Regional Specialized Meteorological Center for the Western Pacific Basin. As such, it is responsible for assigning names to all tropical cyclones that reach 10-minute maximum sustained winds of at least in the region. The PAGASA assigns names to tropical cyclones that form or enter their area of responsibility as a tropical depression or stronger, regardless if the cyclone has been assigned a name by the JMA. The JTWC also monitors systems in the Western Pacific Basin, assigning systems a number with a "W" suffix if the system is a tropical depression or stronger. This timeline includes information from post-storm reviews by the JMA and the JTWC, as well as naming from the PAGASA. It documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transition, and dissipations during the season. Reports among warning centers often differ; therefore, information from both agencies has been included.

Timeline of events

January

January 1 00:00 UTC at The JTWC reports that Tropical Depression 36W has intensified into a tropical storm. 06:00 UTC at The JMA reports that Tropical Depression 36W has intensified into a tropical storm, assigning it the name Pabuk.

January 3

18:00 UTC at The JMA reports that Tropical Storm Pabuk (36W) has reached its peak intensity, estimating maximum sustained winds of and a minimum barometric pressure of .

January 4 00:00 UTC at The JTWC reports that the first and only tropical depression of the month has formed, designating it 01W and estimating a minimum barometric pressure of . 05:45 UTC – Pabuk (36W) makes landfall over Pak Phanang, Nakhon Si Thammarat, Thailand. 12:00 UTC at The JTWC reports that Tropical Depression 01W has weakened into a tropical disturbance. 18:00 UTC at Tropical Storm Pabuk (36W) crosses 100°E, entering the North Indian basin.

January 19 06:00 UTC at The JMA begins tracking Tropical Depression 01W, estimating a minimum barometric pressure of . 06:00 UTC at The PAGASA reports that Tropical Depression 01W has formed within the Philippine Area of Responsibility (PAR), assigning it the local name Amang.

January 20

00:00 UTC at The JMA estimates Tropical Depression 01W's (Amang) maximum sustained winds at .

January 21 06:00 UTC at The JTWC reports that Tropical Disturbance 01W (Amang) has intensified into a tropical depression. 12:00 UTC at The JTWC reports that Tropical Depression 01W (Amang) has reached its peak intensity, estimating maximum 1-minute sustained winds of and a barometric pressure of .

January 22 00:00 UTC at The JTWC reports that Tropical Depression 01W (Amang) has weakened into a tropical disturbance. 06:00 UTC at The JMA last notes Tropical Depression 01W (Amang).

February February 18

12:00 UTC at The JMA reports that the first and only tropical depression of the month has formed.

February 19 00:00 UTC at The JTWC begins tracking the first tropical depression, designating it 02W. 18:00 UTC at The JMA reports that Tropical Depression 02W has intensified into a tropical storm, assigning it the name Wutip. 18:00 UTC at The JTWC reports that Tropical Depression Wutip (02W) has intensified into a tropical storm.

February 20 06:00 UTC at The JMA reports that Tropical Storm Wutip (02W) has intensified into a severe tropical storm. 18:00 UTC at The JMA reports that Severe Tropical Storm Wutip (02W) has intensified into a typhoon.

February 21 00:00 UTC at The JTWC reports that Tropical Storm Wutip (02W) has intensified into a Category 1-equivalent typhoon on the Saffir–Simpson hurricane wind scale (SSHWS).

February 22 00:00 UTC at The JTWC reports that Typhoon Wutip (02W) has intensified into a Category 2-equivalent typhoon on the SSHWS. 18:00 UTC at The JTWC reports that Typhoon Wutip (02W) has intensified into a Category 3-equivalent typhoon on the SSHWS.

February 23

00:00 UTC at The JMA reports that Typhoon Wutip (02W) has intensified into a very strong typhoon. 06:00 UTC at The JTWC reports that Typhoon Wutip (02W) has intensified into a Category 4-equivalent typhoon on the SSHWS. 10:00 UTC at The JTWC reports that Typhoon Wutip (02W) has reached its peak intensity as a Category 5-equivalent super typhoon on the SSHWS, estimating maximum 1-minute sustained winds of 270 km/h (165 mph) and a minimum barometric pressure of . 12:00 UTC at The JMA reports that Typhoon Wutip (02W) has reached its peak intensity as a violent typhoon, estimating maximum sustained winds of and a minimum barometric pressure of . 18:00 UTC at The JTWC reports that Super Typhoon Wutip (02W) has weakened into a Category 4-equivalent super typhoon on the SSHWS.

February 24 00:00 UTC at The JTWC reports that Super Typhoon Wutip (02W) has weakened into a typhoon. 06:00 UTC at The JMA reports that Typhoon Wutip (02W) has weakened from a violent typhoon into a very strong typhoon. 06:00 UTC at The JTWC reports that Typhoon Wutip (02W) has weakened into a Category 3-equivalent typhoon on the SSHWS. 18:00 UTC at The JTWC reports that Typhoon Wutip (02W) has intensified into a Category 4-equivalent typhoon on the SSHWS.

February 25

00:00 UTC at The JMA reports that Typhoon Wutip (02W) has reached its secondary peak intensity, estimating maximum sustained winds of and a minimum barometric pressure of . 06:00 UTC at The JTWC reports that Typhoon Wutip (02W) has reached its secondary peak intensity as a Category 5-equivalent super typhoon on the SSHWS, estimating maximum 1-minute sustained winds of and a barometric pressure of . 12:00 UTC at The JTWC reports that Super Typhoon Wutip (02W) has weakened into a Category 4-equivalent super typhoon on the SSHWS. 18:00 UTC at The JTWC reports that Super Typhoon Wutip (02W) has weakened into a typhoon.

February 26 12:00 UTC at The JTWC reports that Typhoon Wutip (02W) has weakened into a Category 3-equivalent typhoon on the SSHWS. 18:00 UTC at The JMA reports that Typhoon Wutip (02W) has weakened from a very strong typhoon into a typhoon. 18:00 UTC at The JTWC reports that Typhoon Wutip (02W) has weakened into a Category 2-equivalent typhoon on the SSHWS.

February 27 06:00 UTC at The JTWC reports that Typhoon Wutip (02W) has weakened into a Category 1-equivalent typhoon on the SSHWS. 12:00 UTC at The JMA reports that Typhoon Wutip (02W) has weakened into a severe tropical storm. 12:00 UTC at The JTWC reports that Typhoon Wutip (02W) has weakened into a tropical storm.

February 28 00:00 UTC at The JMA reports that Severe Tropical Storm Wutip (02W) has weakened into a tropical storm. 00:00 UTC at The JTWC reports that Tropical Storm Wutip (02W) has weakened into a tropical depression. 06:00 UTC at The JMA reports that Tropical Storm Wutip (02W) has weakened into a tropical depression. 12:00 UTC at The JTWC reports that Tropical Depression Wutip (02W) has weakened into a tropical disturbance. 12:00 UTC at The PAGASA reports that Tropical Depression Wutip (02W) has entered the PAR, assigning it the local name Betty.

March March 2 06:00 UTC at The JMA last notes Tropical Depression Wutip (02W); it dissipates six hours later.

March 14

06:00 UTC at The JMA reports that the first and only tropical depression of the month has formed, estimating a minimum barometric pressure of .

March 15 00:00 UTC at The JTWC begins tracking the tropical depression, designating it 03W and estimating a minimum barometric pressure of .

March 17 00:00 UTC at The PAGASA reports that Tropical Depression 03W has entered the PAR, assigning it the local name Chedeng. 06:00 UTC at The JTWC reports that Tropical Depression 03W (Chedeng) has reached its peak intensity as a tropical storm, estimating maximum 1-minute sustained winds of . 12:00 UTC at The JTWC reports that Tropical Storm 03W (Chedeng) has weakened into a tropical depression.

March 18 18:00 UTC at The JTWC reports that Tropical Depression 03W (Chedeng) has weakened into a tropical disturbance. 18:00 UTC03W (Chedeng) makes its first landfall near Mati City, Davao Oriental in the Philippines. 21:00 UTC03W (Chedeng) makes its second and final landfall near Malita, Davao Oriental in the Philippines.

March 19 06:00 UTC at The JMA last notes Tropical Depression 03W (Chedeng).

April No tropical cyclones formed in April.

May May 7

00:00 UTC at The JMA reports that the first tropical depression of the month has formed. 00:00 UTC at The JMA reports that a second tropical depression has formed. 06:00 UTC at The JMA reports that the first tropical depression has reached a minimum barometric pressure of .

May 8 06:00 UTC at The JMA last notes the first tropical depression for the first time. 06:00 UTC at The JMA reports that the second tropical depression has reached a minimum barometric pressure of .

May 10 00:00 UTC at The JMA reports that the first tropical depression has re-developed.

May 11 00:00 UTC at The JMA last notes the first tropical depression for the second and final time.

May 12

18:00 UTC at The JMA last notes the second tropical depression for the first time.

May 13 06:00 UTC at The JMA reports that the second tropical depression has re-developed.

May 15 06:00 UTC at The JMA last notes the second tropical depression for the second and final time.

June June 24

12:00 UTC at The JMA reports that the first tropical depression of the month has formed.

June 25 06:00 UTC at The PAGASA reports that the first tropical depression has formed within the PAR, assigning it the local name Dodong.

June 26