Southern Asia Pop. 29.6M Capital: Kathmandu 5 articles · good coverage

Nepal

High impact · 6/10 Typically drier in El Niño years
What changed since 9 Oct 2026

Score moved 7 → 6 . “Kathmandu readies contingency plans as a supercharged Pacific warming bears down on the monsoon calendar”

Nepali agencies are drafting contingency plans for a possible "Super El Niño" after the UN weather agency warned that strong Pacific warming would intensify from August 2026. The supplied reports focus on preparedness, glacier retreat and global child exposure, with UNICEF estimating 347 million children worldwide face heightened risk from El Niño conditions. Measured conditions over 9 July–6 October 2026 show rainfall at +124% of normal and temperatures 0.2°C below average, a wetter and cooler signal than the canonical El Niño drying pattern the articles anticipate for the coming seasons.

Sources: [1][2][3] · AI-summarised from 5 articles
RAINFALL · LAST 90 DAYS
+124%

1572.3 mm vs 700.7 mm normal

Reanalysis for 9 July–6 October 2026 shows rainfall at +124% of the 1991–2020 normal, a wet anomaly that runs counter to the canonical El Niño drying signal and to the drought framing in several of the supplied reports.

TEMPERATURE · LAST 90 DAYS
-0.2°C

22.42°C mean vs 22.58°C normal

Mean temperature over the same window came in at -0.2°C versus normal, so the strong ONI (+2.16) has not yet translated into the heat stress the articles anticipate.

SIGNAL CHECK
Opposite to signal

El Niño typically makes Nepal drier. Observed rainfall is running +124% — against the canonical response; local factors are dominating.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (28.0°, 84.0°). Normals are 1991–2020. How this is computed

When it matters

Agricultural calendar for Nepal and where the El Niño impact window falls

JFMAMJJASOND
Peak El Niño impact
Southwest monsoon
Kharif planting
Rabi season
Kharif harvest
Peak El Niño impactRainy seasonPlantingHarvest Peak-impact window begins in 9 months. Monsoon deficits, heat, reservoir stress.

Last 12 months vs normal

Observed monthly rainfall against the 1991–2020 climatology

0100200300400500600Nov2025: 2.6 mm (normal 3.4 mm)NovDec2025: 0.4 mm (normal 5.5 mm)DecJan2026: 5.9 mm (normal 14.1 mm)JanFeb2026: 0 mm (normal 16.9 mm)FebMar2026: 24.9 mm (normal 20.5 mm)MarApr2026: 94.5 mm (normal 29.4 mm)AprMay2026: 279.1 mm (normal 77.4 mm)MayJun2026: 247.9 mm (normal 193.7 mm)JunJul2026: 515.1 mm (normal 333.8 mm)JulAug2026: 468 mm (normal 260.1 mm)AugSep2026: 610.2 mm (normal 178.4 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Sector by sector

Agriculture

Kharif harvest and Rabi planting are the exposed windows, with a weaker, later monsoon likely to cut soil moisture for winter crops even after a wet July–October.

Water & flooding

Reservoir and spring recharge should benefit from the measured wet anomaly, but a delayed 2027 monsoon onset could tighten dry-season supply in the hills.

Health

Disease-vector expansion, heat stress and child nutrition are the main concerns, with UNICEF flagging children among the most exposed groups globally.

Energy

Hydropower generation is likely to hold up through the current wet window, with risk shifting to reduced dry-season inflows if the monsoon retreats early.

Fisheries

Warmer river and pond temperatures plus erratic flows are expected to stress inland aquaculture and wild catch, particularly in the Terai.

What happened last time

Past El Niño episodes and how Nepal responded. See the full ENSO timeline →

2023-24

A strong El Niño year brought below-normal monsoon rainfall to parts of Nepal, with knock-on effects on irrigation and hydropower inflows.

unsourced background

2015-16

One of the strongest events on record coincided with a deficient monsoon in Nepal, depressing paddy output and prompting winter drought concerns.

unsourced background

1997-98

A very strong El Niño was associated with a weak and erratic Nepali monsoon, contributing to winter crop shortfalls and dry-season water stress in the hills.

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