South-Eastern Asia Pop. 102M Capital: Hanoi 5 articles · good coverage

Vietnam

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

Narrative updated. “Super El Niño warnings put Vietnam's rice bowl, power grid and coasts on alert”

Vietnam is being told to prepare for a high-risk El Niño scenario as the event strengthens, with drought, heat and salinity intrusion flagged as the main threats. Measured conditions for 9 July–6 October 2026 show rainfall about 25% above normal and temperatures about 0.7°C above normal, but that window is the climatological dry season, so attention is on the coming monsoon and wet-season rains, which are expected to be erratic. The articles point to mounting pressure on the Mekong Delta, the power grid and export agriculture, even as the canonical El Niño signal of drier conditions has yet to fully assert itself.

Sources: [1][2][3] · AI-summarised from 5 articles
RAINFALL · LAST 90 DAYS
+25%

870.9 mm vs 696.7 mm normal

Measured rainfall for 9 July–6 October 2026 ran about 25% above the 1991–2020 normal, though this window falls in the climatological dry season when totals are normally under 20 mm, so the meaningful signal is the outlook for the coming southwest monsoon and wet-season rains, which articles expect to be erratic and below normal in El Niño-affected regions.

News source
TEMPERATURE · LAST 90 DAYS
+0.7°C

28.38°C mean vs 27.71°C normal

Mean temperatures for the same window were about 0.7°C above normal, consistent with article warnings of intensifying heat and heatwave strain on the power grid.

News source
SIGNAL CHECK
Opposite to signal

El Niño typically makes Vietnam drier. Observed rainfall is running +25% — against the canonical response; local factors are dominating.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (16.2°, 107.8°). Normals are 1991–2020. How this is computed

When it matters

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

JFMAMJJASOND
Peak El Niño impact
Southwest monsoon
Hot season
Wet-season rice planting
Main harvest
Peak El Niño impactRainy seasonDry seasonPlantingHarvest Peak-impact window begins in 5 months. Heat stress, reservoir drawdown, weaker early monsoon.

Last 12 months vs normal

Observed monthly rainfall against the 1991–2020 climatology

0100200300400500600700Nov2025: 621.5 mm (normal 420 mm)NovDec2025: 258.1 mm (normal 264.2 mm)DecJan2026: 63.5 mm (normal 82.2 mm)JanFeb2026: 65.1 mm (normal 31.1 mm)FebMar2026: 122.8 mm (normal 36.6 mm)MarApr2026: 16.7 mm (normal 52 mm)AprMay2026: 73.4 mm (normal 89.4 mm)MayJun2026: 58.1 mm (normal 78.6 mm)JunJul2026: 84.9 mm (normal 92.1 mm)JulAug2026: 87 mm (normal 155.8 mm)AugSep2026: 679.7 mm (normal 366.4 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Sector by sector

Agriculture

Rice, coffee and fruit exports face yield losses from drought, heat stress and salinity intrusion in the Mekong Delta, with the peak risk window running March–July.

Water & flooding

Reservoir and river levels are expected to fall, worsening saltwater intrusion into Delta waterways and tightening irrigation supplies for the wet-season crop.

Health

Prolonged heat raises heat-stress risks for outdoor workers, while water scarcity and salinity intrusion threaten drinking-water quality and nutrition in affected provinces.

Energy

Heatwave-driven demand is already straining the power grid, and the industry ministry warns the strain could worsen as El Niño intensifies.

Fisheries

Warmer coastal waters and shifting currents are likely to displace fish stocks, while drought-driven salinity changes threaten aquaculture and Delta hatcheries.

What happened last time

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

2023-24

El Niño conditions contributed to heat records, power shortages and drought stress across central and southern Vietnam, prompting high-risk preparedness warnings.

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2015-16

A strong El Niño drove one of Vietnam's worst droughts in decades, with Delta salinity pushing tens of kilometres inland and heavy losses in rice and coffee.

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1997-98

One of the strongest El Niño events on record brought severe drought and salinity intrusion to the Mekong Delta, cutting rice output and forcing emergency freshwater deliveries.

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