Cayman Islands
Score moved 6 → 5 (high impact → moderate impact). “Hotter, drier rainy season looms as a potential super El Niño builds in the Pacific”
Cayman Compass reports that a potential 'super El Niño' points to a hotter, drier rainy season for the Cayman Islands, with heat flagged as the territory's biggest concern as El Niño appears imminent. Measured conditions bear this out: rainfall for 9 July–6 October 2026 ran 22% below the 1991–2020 normal, and mean temperatures were 0.9°C above normal, while Cayman News Service described a hot, dry July. The outlook for the coming rains is therefore for suppressed wet-season totals and above-normal heat, with the November–January harvest and water resources the sectors most exposed.
225.5 mm vs 289.5 mm normal
Reanalysis shows rainfall 22% below the 1991–2020 normal for 9 July–6 October 2026, consistent with the drier-than-usual rainy season the articles forecast for a strengthening El Niño.
News source29.89°C mean vs 29.01°C normal
Mean temperatures ran 0.9°C above normal over the same window, matching the hotter conditions Cayman Compass and Cayman News Service reported through July and the rainy season.
News sourceEl Niño typically makes Cayman Islands drier. Observed rainfall is running -22% — in line with the canonical response.
NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (19.5°, -80.5°). Normals are 1991–2020. How this is computed
When it matters
Agricultural calendar for Cayman Islands and where the El Niño impact window falls
Last 12 months vs normal
Observed monthly rainfall against the 1991–2020 climatology
Sector by sector
Rain-fed crops and livestock pasture are expected to face moisture stress as wet-season rainfall runs below normal, though the planting and harvest calendar remains on schedule.
Below-normal wet-season rainfall is likely to reduce catchment and cistern recharge, raising the risk of tighter water supplies and greater reliance on desalination into the dry season.
Sustained heat raises the risk of heat stress and dehydration, particularly for outdoor workers and the elderly, while drier conditions may affect water quality and nutrition.
Above-normal heat is expected to lift air-conditioning demand and peak electricity load, increasing fuel consumption and grid strain during the hottest months.
Warmer coastal waters and reduced runoff may shift reef fish and lobster distributions, with hotter nearshore conditions adding stress to shallow-water habitats.
What happened last time
Past El Niño episodes and how Cayman Islands responded. See the full ENSO timeline →
2023-24
A strong El Niño contributed to a hot, dry stretch in Cayman, with local reporting noting heat as the primary concern as the event developed.
unsourced background2015-16
One of the strongest El Niño events on record was associated with below-normal rainfall and above-normal heat across the western Caribbean, including Cayman.
unsourced background1997-98
A very strong El Niño brought notably hot, dry conditions to the Cayman Islands, suppressing wet-season rainfall and stressing water supplies and rain-fed agriculture.
unsourced backgroundLatest coverage
RSSWEATHER VAULT: Hurricane Lili 2002
Super El Niño Builds: Cayman Braces for a Hotter, Drier Rainy Season
Cayman Compass reports that a potential 'super El Niño' points to a hotter, drier rainy season for the Cayman Islands, with heat flagged as the territory's biggest concern as El Niño appears imminent.
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Potential ‘super El Niño’ points to hotter, drier rainy season for Cayman
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