Middle Africa Pop. 6.5M Capital: Brazzaville 5 articles · good coverage

Congo

Minimal impact · 3/10 Weak signal in El Niño years
What changed since 9 Oct 2026

Score moved 2 → 3 . “El Niño's grip on Congo stays weak — but the coming rains will decide the harvest”

El Niño conditions have strengthened to an ONI of +2.16 for July–September 2026, yet the canonical signal for Congo remains weak, and the measured climate record bears this out: rainfall for 9 July–6 October ran 39% above the 1991–2020 normal while temperatures sat +0.9°C above average. Because that window is Congo's climatological dry season, when totals are normally under 20 mm, the anomaly is best read as a wetter-than-usual dry season rather than a shift in the rainy season itself, and attention now turns to the onset of the coming rains. Humanitarian and food-security agencies warn that El Niño-driven hunger risks are rising across already vulnerable African regions, and that Congo's agriculture, water and health systems should prepare for a more erratic season ahead even if the direct signal here stays muted.

Sources: [1][2][3] · AI-summarised from 5 articles
RAINFALL · LAST 90 DAYS
+39%

329.5 mm vs 237.4 mm normal

Reanalysis for 9 July–6 October 2026 shows rainfall 39% above the 1991–2020 normal, though this window falls in Congo's climatological dry season when totals are normally under 20 mm, so the meaningful signal is the outlook for the coming rains.

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TEMPERATURE · LAST 90 DAYS
+0.9°C

27.03°C mean vs 26.15°C normal

Mean temperatures for the same July–October window ran +0.9°C above normal, consistent with the weak El Niño warming signal the articles flag for Central Africa.

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SIGNAL CHECK
On schedule

The May–September growing season and August–October harvest proceeded broadly on schedule, with the wetter-than-normal dry season likely favouring early land preparation for the next spring planting in March–May.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (-1.0°, 15.0°). Normals are 1991–2020. How this is computed

When it matters

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

JFMAMJJASOND
Growing season
Spring planting
Harvest
Rainy seasonPlantingHarvest

Last 12 months vs normal

Observed monthly rainfall against the 1991–2020 climatology

050100150200250Nov2025: 151 mm (normal 204.7 mm)NovDec2025: 106 mm (normal 150.1 mm)DecJan2026: 256.2 mm (normal 104.2 mm)JanFeb2026: 122 mm (normal 124 mm)FebMar2026: 175.6 mm (normal 160.4 mm)MarApr2026: 197.7 mm (normal 156.5 mm)AprMay2026: 125.6 mm (normal 136.4 mm)MayJun2026: 48 mm (normal 56 mm)JunJul2026: 23.8 mm (normal 27.4 mm)JulAug2026: 15.1 mm (normal 49.9 mm)AugSep2026: 242.8 mm (normal 129.7 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Sector by sector

Agriculture

The May–September growing season and August–October harvest stayed broadly on schedule, but a wetter dry season could complicate field drying and post-harvest storage while raising hopes for the March–May planting.

Water & flooding

Above-normal dry-season rainfall has likely replenished rivers, wetlands and the Congo Basin's soil moisture, easing short-term water stress ahead of the next rainy season.

Health

Warmer-than-normal conditions (+0.9°C) combined with standing water could raise the risk of malaria and waterborne disease, while nutrition gains from a good harvest may offset some El Niño-driven food insecurity.

Energy

Improved reservoir and river levels should support hydropower output such as Inga, though a weak El Niño signal means no major disruption to generation is expected.

Fisheries

Higher dry-season flows and cooler, more turbid water in the Congo River system may shift fish migration and catch patterns, with inland fishing communities likely to see variable yields.

What happened last time

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

2023-24

A strong El Niño amplified flooding and displacement across Central and East Africa, with humanitarian agencies warning of heightened hunger risks in vulnerable communities.

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2015-16

A powerful El Niño coincided with drought stress in parts of Central and Southern Africa, straining food supplies and hydropower in the wider region including Congo.

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1997-98

One of the strongest El Niño events on record brought erratic rainfall to Central Africa, disrupting planting calendars and contributing to food insecurity across the Congo Basin.

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