Bhubaneswar: If you have been eagerly scanning the skies for the arrival of the southwest monsoon, the wait may continue for a few more days.

While the monsoon has gathered strength over the surrounding seas, weather indicators suggest that Odisha is unlikely to receive a formal monsoon onset before mid-June. Instead, meteorologists are increasingly pointing towards June 16-20 as the most likely window for the monsoon's arrival over the state.

Why the Monsoon Delayed?

At first glance, conditions appear favourable. Strong southwesterly winds are blowing across the Arabian Sea and the Bay of Bengal, and cross-equatorial moisture flow has intensified significantly.

However, the monsoon's main engine is currently operating away from Odisha.

Most of the deep moisture and thunderstorm activity is concentrated over Myanmar, Bangladesh and the eastern Bay of Bengal, leaving eastern India on the fringes of the strongest rain-bearing systems. Weather models show that the moisture-laden winds reaching Odisha are not yet strong enough to sustain the widespread, persistent rainfall required for an official monsoon declaration.

Another hurdle is the presence of atmospheric ridge patterns over parts of western and northwestern India. These ridges are acting like invisible roadblocks, slowing the northward advance of the monsoon trough across the country.

What Can Odisha Expect This Week?

Between now and June 13, Odisha is likely to witness:

• Scattered pre-monsoon thunderstorms
• Localized heavy showers in coastal and southern districts
• Hot and humid conditions during rain-free periods
• No widespread, state-wide monsoon rainfall event

Residents should therefore not confuse occasional thunderstorms with the formal onset of the southwest monsoon.

The Turning Point Could Arrive After June 15

The larger atmospheric picture becomes far more interesting during the week of June 13-19.

Global weather models indicate that a powerful tropical atmospheric disturbance known as a Kelvin Wave is expected to move across the Bay of Bengal. As it interacts with a developing low-frequency tropical system, the Bay could witness a sharp increase in cloud formation and convection.

In simple terms, the atmosphere may finally get the push it needs to organize a proper rain-bearing system over the north-central Bay of Bengal.

Should a low-pressure area or monsoon depression form as expected, moisture-laden winds would begin striking the Odisha coast directly instead of merely skirting past it. That would dramatically increase rainfall coverage and intensity across the state.

For this reason, June 16-20 currently appears to be the most favourable period for a formal monsoon onset over Odisha.

What About the Rest of India?

The weather story over the rest of the country remains equally intriguing.

Gujarat and adjoining Pakistan coast: A strong convective zone over the northern Arabian Sea could trigger the formation of a low-pressure area or cyclonic circulation during the coming week, bringing increased rainfall activity to western coastal regions.

Kerala, Karnataka and Konkan: Southwest monsoon conditions are likely to remain active, supported by robust Arabian Sea moisture flow.

Andhra Pradesh and Telangana: Rainfall activity is expected to increase significantly after mid-June as Bay of Bengal systems become more organized.

West Bengal and Bangladesh: Being closer to the current moisture-rich zone, these regions could experience periods of enhanced rainfall before Odisha receives its full monsoon surge.

Northwest India: Parts of Rajasthan, Punjab and Haryana may continue to experience hot conditions as atmospheric ridging delays widespread monsoon penetration.

Outlook Beyond June 20

The encouraging news is that once the monsoon establishes itself over Odisha, rainfall could arrive in a relatively strong burst rather than through a gradual progression.

However, current global signals also suggest that after this initial surge, rainfall may briefly stabilize towards late June as the strongest tropical wave energy shifts further east.

For farmers awaiting sowing operations and urban residents hoping for relief from the heat, the message from the atmosphere is becoming clearer: the monsoon is approaching Odisha, but its grand arrival is more likely in the second half of June than in the first.

Also Read: Monsoon 2026: Mumbai Likely to Get Rains on Time, Odisha Faces Delay Beyond June 14 Amid Weak Bay of Bengal Push| Exclusive