Monsoon 2026 Explained: IMD Forecast, El Niño Impact and Rainfall Trends

The southwest monsoon tends to affect the climatic conditions across India. From medium to heavy rainfall, monsoons tend to influence the lifestyle, behaviour, and work dynamics. The Monsoon 2026 update by IMD has raised concerns regarding a below-normal southwest monsoon this year.

After two consecutive years of good rainfall, the 2026 season is expected to break the climatic trend. Due to the possible return of El Niño conditions, a global climate phenomenon known to weaken India’s monsoon.

The forecast has significant implications for agriculture, inflation, water supply, and overall economic growth.

IMD Forecast for Monsoon 2026

According to the latest report, the IMD expects rainfall between June and September. Where monsoon season accounts for around 92% of the Long Period Average (LPA). 

It falls under the “below normal” category, indicating a likely shortfall in rainfall across several regions. The forecast also highlights that central parts of India, including key agricultural zones, may experience reduced rainfall probability. 

Hence, there are increasing concerns for crop output and rural livelihoods. 

Why El Niño Is the Biggest Factor

The primary reason behind the weak Monsoon 2026 forecast is the expected development of El Niño conditions during the monsoon period.

El Niño is a climate pattern characterised by the warming of the central and eastern Pacific Ocean. Thereby, it disrupts the global weather systems.

For India, El Niño typically results in:

• Reduced monsoon rainfall
• Higher temperatures and heatwaves
• Delayed or uneven rainfall distribution

Weather agencies and global models indicate that El Niño may develop after June. During the first half of the monsoon, it directly impacts rainfall in the second half of the season.

About 7 out of 10 El Niño years have resulted in weak monsoons in India, showing a strong correlation between the two. 

Rainfall Trends Expected in 2026

The Monsoon 2026 will not show uniform weakness throughout the entire nation. The forecast shows different outcomes for various regions, which will experience normal rainfall, while other areas will have insufficient rainfall. 

The initial trends show that June will experience a gradual or minor monsoon onset, increased dry conditions, and during July to August if El Niño develops stronger effects. The chance of a slight recovery during subsequent months, which depends on other weather elements bringing rain. 

The Indian Ocean Dipole (IOD) serves as one climate element which might achieve a positive status later in the season to decrease El Niño effects. The monsoon season will bring below normal rainfall to the region, yet some areas will still receive sufficient precipitation. 

Impact on Agriculture and Economy

The Monsoon 2026 forecast holds crucial importance because Indian agriculture depends entirely on rainfall. The agricultural land in India depends on monsoon rains for 70 per cent of its area, so any rainfall shortfall becomes a critical problem for the country. 

A weaker monsoon could lead to lower crop yields, particularly for rice, pulses and sugarcane. Food prices will rise, which will result in inflation, and the country will need to import specific goods at a higher rate. 

Economists have already warned that a poor monsoon could push inflation above expected levels and slightly impact GDP growth in the coming financial year. 

Regional Variations to Watch

The impact of Monsoon 2026 is expected to vary across regions. Central India and parts of Maharashtra, including Vidarbha, are likely to see below-normal rainfall probabilities, which could affect key crop-growing areas. 

Meanwhile, some southern and northeastern regions may still receive near-normal rainfall, depending on local weather patterns. The uneven distribution is often more challenging than an overall deficit, as it creates localised droughts and flooding risks simultaneously.

Conclusion

The Monsoon 2026 forecast points toward a challenging season, driven largely by the expected return of El Niño. While rainfall is projected to be below normal, the final outcome will depend on how different climate systems interact over the coming months.

For India, the monsoon remains more than just a weather event; it is a critical driver of agriculture, economy, and daily life.

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