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Monsoon 2026, El Nino & Climate Signals

The 2026 monsoon is running below par but not collapsing, and mid-August showed how much that average hides. Parliament was told on 12 August 2026 that cumulative rainfall stood 12 percent under the long period average on 2 August - close to IMD's April and May calls of 92 and then 90 percent. June was 35 percent short with seven districts in ten in deficit; July finished 1 percent above average nationally, yet 47 percent of districts stayed deficient. Then, in the second week of August, a Bay of Bengal system put Chhattisgarh under a red warning and pushed Odisha's rivers past their danger marks. El Nino, weak in June and now moderate, is the brake; the Indian Ocean Dipole stays neutral and offers no counterweight.

Last updated 14 August 20269 min read
Latest update
Put the mid-August flood emergency on the record without losing the season's shape. On 14 August 2026 IMD held Chhattisgarh under a red warning for very heavy to extremely heavy rain, with Odisha, Jharkhand, Gangetic West Bengal, Uttarakhand and Himachal Pradesh a step below - the red that had sat over Odisha days earlier having moved west as the system tracked inland. In Odisha the Baitarani ran above its danger mark at Anandapur and Patna, the Budhabalanga reached parts of Baripada, a bridge in Mayurbhanj was washed away, and Sundargarh and Keonjhar carried district-level red warnings; a further low-pressure area is expected around 20 August. The season itself is unchanged at 12 percent below the long period average on 2 August, which is the point: the shortfall is an average, the damage arrives in one catchment at a time. Restored too: the weekly crop weather watch the agriculture ministry runs off IMD's rainfall data.

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