India September rainfall forecast 2026 data from the India Meteorological Department points to below-normal rainfall nationally during September, but that does not mean every part of the country is expected to be dry. Current reporting based on the IMD outlook places all-India September rainfall below 91% of the long-period average, while some parts of Northwest, Northeast, East and East-Central India, along with isolated areas of Southeast Peninsular India, may still receive normal to above-normal rainfall.
What the September rainfall forecast means
The most useful way to read the forecast is as a national risk signal, not a crop-loss forecast. September rainfall can affect standing kharif crops that are still developing or maturing, and it can influence soil moisture available before winter sowing. The actual consequence will depend on where rain falls, how much moisture is already available, the crop stage and whether irrigation can compensate for a local shortfall.
How much rainfall is IMD expecting in September?
Current IMD-attributed reporting says September rainfall across India is most likely to be below 91% of the month’s long-period average. The reported September LPA is about 167.9 mm. That percentage describes the national average and should not be interpreted as a forecast that every state, district or farm will receive the same relative deficit.
The regional picture is more mixed. Current reports quoting IMD Director General Mrutyunjay Mohapatra say normal to above-normal rainfall remains possible over some areas of Northwest India, Northeast India, East India, East-Central India and isolated parts of Southeast Peninsular India. That is why a national below-normal category cannot be converted into a blanket statement that all of India will have deficient September rainfall.
India enters September after a weak August
The September outlook also matters because it follows an already weak rainfall period. Current IMD-attributed reports place India’s June-to-August rainfall deficit at about 13.8%, while August alone finished roughly 16% below normal nationally. Business Standard reported that IMD data showed around 350 districts, about 47% of the country by district count, in deficient or very deficient rainfall categories at the end of August.
Those national and district statistics provide context, but they still do not establish the same risk everywhere. A district that already has a rainfall deficit can be more exposed to another weak spell, while irrigation, reservoir availability, crop choice and subsequent rainfall can materially change the outcome.
Which crops are exposed if September rain remains weak?
Reuters identified cotton, soybean, maize and pulses among the summer crops for which September rainfall can matter during development and maturity. These crops should be described as exposed, not as crops that are certain to lose yield. A weather forecast does not establish future production losses.
Paddy also enters September with an important acreage context. Government data reported by PTI for August 28 placed paddy sowing at 414.10 lakh hectares compared with 428.46 lakh hectares a year earlier. That acreage difference does not prove a September weather impact, but it is relevant background when assessing how another month of weak rainfall could affect the agricultural season.
Why September also matters for winter crops
The effect of September rainfall can extend beyond crops currently standing in fields. If rainfall remains weak in areas already short of moisture, soil conditions going into the rabi season may be less favourable. Reuters specifically highlighted potential soil-moisture implications for later wheat and rapeseed planting.
This does not mean rabi output has already been damaged. September rainfall, irrigation, reservoir conditions and later weather will determine how much moisture is actually available when winter sowing begins.
Temperature could add another layer of stress
Current IMD-attributed coverage also says above-normal maximum temperatures are likely over most of India during September. Higher temperatures can increase moisture demand, so rainfall and temperature should be considered together when assessing crop exposure. The combination still cannot be translated directly into a verified yield-loss figure.
Why El Niño is part of the September discussion
An August 2026 parliamentary response citing IMD said the inverse relationship between El Niño and Indian monsoon rainfall tends to be stronger in the latter half of the season, particularly September. That provides a meteorological reason to watch the final monsoon month closely, but it does not remove the regional uncertainty in the monthly forecast.
Forecast risk is not the same as confirmed crop loss
The strongest conclusion supported by the evidence is that below-normal national rainfall creates additional moisture risk for some agricultural areas and crop stages. It is not evidence that a particular crop will fail, that every deficient district will remain dry, or that India has entered a nationwide drought.
Actual crop consequences will depend on realized rainfall, the timing and distribution of rain, soil moisture, irrigation access, crop stage and later official production assessments. Any claim about future yield or food-price effects should therefore remain conditional until stronger evidence becomes available.
What farmers and other readers should monitor next
The monthly outlook is useful for understanding the broad risk environment, but field-level decisions require newer and more local information. Readers should monitor IMD short- and medium-range forecasts, district-level agrometeorological advisories and realized rainfall during September. Crop-condition and acreage updates from agriculture authorities will provide stronger evidence of whether the forecast is translating into measurable agricultural stress.
How this was verified
ThePulseSignal reviewed IMD’s current rainfall-information surface confirming the September 2026 monthly outlook, earlier official IMD and PIB seasonal guidance, an August parliamentary response on El Niño and monsoon rainfall, and current reporting that attributes the September rainfall figures and regional outlook to IMD. Agriculture exposure was cross-checked against current crop-acreage reporting and multiple current publications rather than inferred from the national rainfall percentage alone.
Limitations and unresolved facts
The exact IMD publication clock for the September outlook was not recovered, and the complete regional probability map was not independently extracted from the final current primary document during research. Realized September rainfall, district-level outcomes, irrigation buffering and crop-specific yield effects remain unknown. The article therefore describes forecast exposure and current evidence, not confirmed future crop losses.