New Caledonia
Score moved 7 → 6 . “Dry-season gauges read 20% below normal while the Pacific braces for a Super El Niño”
El Niño conditions are now confirmed across the Pacific, with SPREP urging coordinated regional responses and One Health teams linking climate, environmental and marine health threats. For New Caledonia the canonical signal is drier than normal, and the 9 July–6 October 2026 reanalysis already shows rainfall 20% below the 1991–2020 average, although that window is the climatological dry season when totals are normally under 20 mm. The real test comes with the November–March wet season, when peak El Niño impact is expected to delay the onset of rains that drive the Territory's agricultural growing season.
136.2 mm vs 171.3 mm normal
Reanalysis for 9 July–6 October 2026 shows rainfall 20% below the 1991–2020 normal, though this window is New Caledonia's climatological dry season when totals are normally under 20 mm, so the meaningful signal is the outlook for the coming wet season rather than a percentage.
20.49°C mean vs 20.77°C normal
Mean temperature for the same window ran 0.3°C below normal, a cool anomaly that sits awkwardly beside the record global warmth the articles attribute to the strengthening El Niño.
El Niño typically makes New Caledonia drier. Observed rainfall is running -21% — in line with the canonical response.
NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (-21.5°, 165.5°). Normals are 1991–2020. How this is computed
When it matters
Agricultural calendar for New Caledonia and where the El Niño impact window falls
Last 12 months vs normal
Observed monthly rainfall against the 1991–2020 climatology
Sector by sector
A delayed and weaker wet-season onset is likely to push back pasture recovery and crop planting, with peak El Niño impact expected across November–March.
Below-normal wet-season rainfall would reduce catchment recharge and put pressure on reservoir and bore supplies through the 2027 dry season.
One Health partners warn of heightened climate-sensitive disease and nutrition risks, with water scarcity and heat stress compounding existing vulnerabilities.
Drier conditions raise demand for cooling and pumping while reducing hydropower catchment inflows, increasing reliance on thermal generation.
Warming surface waters are projected to shift plankton productivity and tuna distribution, disrupting the offshore fishery that anchors the Territory's marine economy.
What happened last time
Past El Niño episodes and how New Caledonia responded. See the full ENSO timeline →
2023-24
The most recent El Niño delivered below-average wet-season rainfall to the Territory, reinforcing the pattern of delayed growing-season onset under El Niño conditions.
unsourced background2015-16
A comparable Super El Niño produced pronounced drying across the southwest Pacific, stressing New Caledonian pasture, water storage and inshore fisheries.
unsourced background1997-98
A very strong El Niño brought one of the most severe droughts on record to New Caledonia, with well-below-normal wet-season rainfall, depleted reservoirs and heavy agricultural losses.
unsourced backgroundLatest coverage
RSSPacific Islands Forum 2026: What Lowy’s Pacific team will be watching
El Niño confirmed as New Caledonia faces a drier wet season and a late start to the growing year
El Niño conditions are now confirmed across the Pacific, with SPREP urging coordinated regional responses and One Health teams linking climate, environmental and marine health threats. For New Caledon
From plankton to tuna: How Super El Niño upends marine ecosystems
As El Nino threats become reality, One Health unites Pacific countries across sectors to address health, environmental and climate threats
Nearby
Other countries in Melanesia