Which City Receives the Monsoon First in India?

Every year in summer temperature soar across the India and millions of people are eagerly waiting for the arrival of the monsoons. As framers look in to skies for rain which will nourish their crops and city people hope for the from the scorching summer heat.

Most of news channels, weather experts and travelers closely track one important question: Where does the monsoon arrive first in India?

The answer is more interesting than many people realize it. In India one region receives the first monsoon showers and another holds the distinction of being the first city on the Indian mainland to welcome the rainy season.

Understanding this journey helps to explain why the monsoon is often called the lifeline of India.

Which City Receives the Monsoon First in India?

The first city on the Indian mainland to receive the southwest monsoon is the Thiruvananthapuram, the capital of Kerala.

However if India’s island territories are included then Andaman and Nicobar Islands receive the monsoon even earlier usually around the May 22 just several days before monsoon reaches to Kerala.

So the distinction is the,

First in India overall: Andaman and Nicobar Islands

First city on the Indian mainland: Thiruvananthapuram (Capital of Keralam)

Traditionally, the monsoon reaches to the Kerala around June 1st and marking the official beginning of the southwest monsoon season in India.

Why Does Kerala Receive the Monsoon First?

The geographical location of Kerala gives unique advantage. As it is situated at the southwestern tip of the Indian peninsula and Kerala become the first major landmass encountered by moisture-laden winds traveling form the Arabian Sea.

Another important factor was the presence of the Western Ghats. These western ghats mountains act as a natural barrier and forcing the moist air to rise and cool and resulting in the significant rainfall across Kerala.

This combination of the location and topography makes Kerala as the natural gateway for India’s monsoon.

How Does the Monsoon Travel Across India?

Once the southwest monsoon reaches to Kerala, it begins a gradual journey across the country.

The rain bearing winds moves northward and eastward and covering the different regions in various phases. The coastal areas receive rainfall first followed by the central and northern India.

The monsoon typically follows this type of progression,

Region/City	Normal Arrival Period
Andaman and Nicobar Islands	Around May 22
Thiruvananthapuram (Kerala)	Around June 1
Goa and Coastal Karnataka	June 5–10
Mumbai	Around June 11
Kolkata	June 10–15
Delhi	June 27–July 1
Entire Rajasthan	Around July 15

By the mid-July, the southwest monsoon usually covers the entire part of the country.

What Did the IMD Say About the 2026 Monsoon?

According to the India Meteorological Department (IMD) the southwest monsoon has reached the Andaman and Nicobar Islands on May 18, 2026 which is earlier than usual.

The weather agency also indicated that Kerala could receive the monsoon before its normal date of June 1st and marking an early monsoon year.

The IMD forecast for seasonal rainfall stand at around 92% of the Long Period Average (LPA) and suggesting slightly below-normal rainfall but not the drought conditions.

How Does the IMD Declare the Onset of Monsoon?

The official onset of the monsoon over Kerala is not just declared simply because it rains at that part.

The IMD follows the specific scientific criteria, including the,

• At least 60% of designated weather stations reporting rainfall.
• Rainfall of a 2.5 mm or more at these stations for two consecutive days.
• Suitable wind patterns and the atmospheric conditions.

Only after these conditions are met does the IMD officially announce that the onset of the southwest monsoon.

Interesting Facts About India’s Monsoon

Nearly 70% of the India’s annual rainfall comes during the southwest monsoon season.

Agriculture in large parts of India heavily relies on timely monsoon rains for the crop production.

A good monsoon often boosts the agricultural output, rural income and overall economic growth of country.

While June 1 is the normal onset date for the Kerala but the monsoon may arrive earlier or later depending on to the weather conditions.

From Kerala to northwestern India the Indian monsoon usually takes about six weeks to cover the entire country.