Western Asia Pop. 5.5M Capital: Muscat 5 articles · good coverage

Oman

Moderate impact · 4/10 Weak signal in El Niño years
What changed since 9 Oct 2026

Narrative updated. “El Niño is stretching Oman's summer heat and putting the winter rains under watch”

Oman is in the grip of a prolonged hot season, with El Niño conditions expected to persist into November and measured temperatures running about 1.7°C above normal for July to early October. Because this window is the country's climatological dry season, the real question is the November–March winter rains, which seasonal precipitation outlooks suggest may be near to slightly below average. The heat raises demand for cooling and water while keeping the locust and agricultural outlook under close watch.

Sources: [1][2][3] · AI-summarised from 5 articles
RAINFALL · LAST 90 DAYS
Dry season

3.4 mm vs 9.3 mm normal — too little rain in this window for a % to mean anything

The July–October window is Oman's climatological dry season, so no meaningful rainfall anomaly applies; attention instead turns to the November–March winter rains, which locust and seasonal outlooks suggest may be near to slightly below average.

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TEMPERATURE · LAST 90 DAYS
+1.7°C

35.96°C mean vs 34.28°C normal

Measured mean temperatures for 9 July–6 October 2026 ran about +1.7°C above normal, consistent with article warnings that El Niño is prolonging and intensifying Oman's hot summer.

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SIGNAL CHECK
On schedule

The wheat harvest (May–June) is complete and the winter cropping cycle remains on schedule, though a delayed or weak onset of the November–March rains would stress planting and pasture recovery.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (21.0°, 57.0°). Normals are 1991–2020. How this is computed

When it matters

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

JFMAMJJASOND
Winter rains
Wheat harvest
Rainy seasonHarvest

Last 12 months vs normal

Observed monthly rainfall against the 1991–2020 climatology

0Nov2025: 0.1 mm (normal 3.3 mm)NovDec2025: 0 mm (normal 4 mm)DecJan2026: 0 mm (normal 3.2 mm)JanFeb2026: 0 mm (normal 3.3 mm)FebMar2026: 13.5 mm (normal 7.9 mm)MarApr2026: 2.3 mm (normal 5.6 mm)AprMay2026: 0 mm (normal 2.4 mm)MayJun2026: 0.9 mm (normal 4.7 mm)JunJul2026: 1.2 mm (normal 4 mm)JulAug2026: 2.1 mm (normal 4 mm)AugSep2026: 0.4 mm (normal 1.5 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Sector by sector

Agriculture

Wheat harvest is finished, but a weak or delayed start to the November–March rains would hurt winter planting, pasture and rangeland recovery.

Water & flooding

Sustained heat lifts evaporation and municipal and irrigation demand, drawing down reservoirs and groundwater ahead of the winter recharge season.

Health

Extended heat raises the risk of heat stress and dehydration, particularly for outdoor workers, and can worsen air quality and dust-related respiratory complaints.

Energy

Prolonged high temperatures are expected to keep electricity demand for cooling elevated well beyond the usual summer peak.

Fisheries

Warmer coastal waters can shift fish migration and reduce nearshore productivity, while heat and rough conditions raise safety risks for small boats.

What happened last time

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

2023-24

A strong El Niño amplified global temperatures and regional heat, with Oman facing prolonged hot conditions and uncertain winter rainfall.

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2015-16

A powerful El Niño contributed to record global heat and a hot, dry Arabian Peninsula season, with elevated cooling demand and pressure on groundwater in Oman.

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1997-98

One of the strongest El Niño events on record, associated with exceptional regional heat and suppressed rainfall across the Arabian Peninsula, stressing water supplies and grazing.

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