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

The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula.

On 6 June, a Depression formed in the Arabian Sea, which was later named Biparjoy and rapidly intensified to a Category 1-equivalent cyclone.

On 30 September, ARB 02 formed.On 25 January, a cyclonic circulation formed over the equatorial Indian Ocean and the adjoining Bay of Bengal.

[8] However, increasing land interaction with Sri Lanka caused the JTWC to downgrade the system's chance for development to medium and subsequently canceling its TCFA.

[17] Mocha quickly intensified to a severe cyclonic storm at 12:00 UTC after reaching winds of 105 km/h (65 mph).

[20] Mocha rapidly intensified to an extremely severe cyclonic storm at 18:00 UTC,[21] before undergoing an eyewall replacement cycle.

[22] After having completing the cycle on 13 May, Mocha rapidly intensified and reached a peak intensity as a Category 5-equivalent tropical cyclone the next day,[23] shortly before the storm entered unfavourable conditions.

[25] Mocha began to weaken swiftly after landfall due to Myanmar's terrain, with wind shear degrading the storm further.

[37] By 00:00 UTC on 7 June, the IMD upgraded the system to a severe cyclonic storm with winds of 100 km/h (65 mph).

[38] At the cloud tops Biparjoy warmed and the convective burst collapsed, resulting in an upper-level outflow from the storm and pushing it back towards its system core.

[43][44] Biparjoy reached its peak intensity as an extremely severe cyclonic storm, with maximum 3-minute sustained winds of 165 km/h (105 mph).

[50] In Pakistan, 81,000 people were evacuated from the southeastern coast, and authorities established 75 relief camps at schools to provide assistance.

[53][54][55] On 29 July the IMD noted a cyclonic circulation forming over North Odisha and nearby Gangetic West Bengal.

Continued to move west-northwest, it became a well-marked low pressure area over north Chhattisgarh and nearby region by 12:00 UTC on 3 August.

[56] In the early hours of 29 September, an area of low pressure spawned over the eastern Arabian Sea near the Konkan coast.

However, its proximity to land prevented the system from intensifying further as it moved northeastward, and it made landfall between Panjim and Ratnagiri between 15:00–17:00 UTC that same day.

The depression moved east-northeastward following landfall, weakening to a well-marked low pressure area over southern Maharashta by 03:00 UTC on 1 October.

[57] On 16 October, the India Meteorological Department (IMD) began monitoring a disturbance which had the potential to become a cyclonic circulation in the Arabian Sea.

As Tej traversed northwestward, it would be in an environment with warm SSTs, allowing it to rapidly intensify into a Category-3 tropical cyclone on 22 October.

The storm would soon weaken, making landfall in the Al Mahrah Governorate of Yemen between 23 and 24 October 2023, bringing significant rainfall and flooding across the eastern half of the country and western parts of Oman.

The storm made landfall on Cox's Bazar on the Bangladesh coast, bringing strong winds and intense rainfall into that area.

As the system lashed the country, five people were killed in total as Hamoon crossed the Cox's Bazar and Chittagong coasts.

In this case, the system gradually intensified and on 15 November, the India Meteorological Department (IMD) designated it as a low pressure.

[67] The Bangladesh Inland Water Transport Authority (BIWTA) announced the suspension of all types of shipping due to Cyclone Midhili.

[68] In Teknaf Upazila of Cox's Bazar district of Bangladesh, rain started on the morning of Thursday, 16 November 2023, due to the effect of a deep depression created in the Bay of Bengal.

Chennai, the capital of Tamil Nadu, experienced the worst rains in over 100 years, causing widespread flooding and disrupting daily life.

[77] Simultaneously, the JTWC would report that the system became Tropical Cyclone 03B after its low-level circulation center became fully exposed within its disorganized convection.