Western Asia Pop. 37.0M Capital: Riyadh 5 articles · good coverage

Saudi Arabia

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

Narrative updated. “Saudi forecasters flag a developing El Niño — and a winter rain season that could run wetter than usual”

Saudi Arabia's national meteorology service has flagged indications that El Niño is developing, with the Kingdom's canonical signal pointing to an occasionally wetter winter rain season rather than a dramatic shift. The July-to-October window is the country's climatological dry season, so no meaningful rainfall anomaly applies, but measured temperatures ran about 1.7°C above normal — a warming consistent with the Gulf-wide heat and economic risk highlighted by regional analysts. Attention now turns to the November-to-March rains that drive the agricultural calendar, with wheat harvest already completed on schedule in May and June.

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

0 mm vs 0.2 mm normal — too little rain in this window for a % to mean anything

The July–October window is Saudi Arabia's climatological dry season, so no meaningful rainfall anomaly applies; the articles instead point to a possible wetter-than-normal winter rain season (Nov–Mar) under the developing El Niño.

News source
TEMPERATURE · LAST 90 DAYS
+1.7°C

34.76°C mean vs 33.09°C normal

Measured mean temperatures for early July to early October 2026 ran about 1.7°C above normal, consistent with the strong El Niño signal and with the Gulf-wide warming described in the articles.

News source
SIGNAL CHECK
On schedule

The agricultural calendar remains on schedule, with wheat harvest completed in May–June and the winter rains that drive the main planting season expected to arrive on time, though their volume may be boosted by El Niño.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (25.0°, 45.0°). Normals are 1991–2020. How this is computed

When it matters

Agricultural calendar for Saudi Arabia 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

020406080Nov2025: 0.5 mm (normal 6.7 mm)NovDec2025: 45.3 mm (normal 4.7 mm)DecJan2026: 0.9 mm (normal 5 mm)JanFeb2026: 1.7 mm (normal 3.4 mm)FebMar2026: 23.1 mm (normal 3.9 mm)MarApr2026: 81.6 mm (normal 5.7 mm)AprMay2026: 1.3 mm (normal 1.3 mm)MayJun2026: 0 mm (normal 0 mm)JunJul2026: 0 mm (normal 0 mm)JulAug2026: 0 mm (normal 0.2 mm)AugSep2026: 0 mm (normal 0 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Sector by sector

Agriculture

Wheat harvest finished on schedule in May–June, and the main winter planting season should start on time, though a wetter-than-usual rainy season could bring both relief and localised flood damage to fields.

Water & flooding

A wetter winter would ease pressure on aquifers and desalination demand, but the current dry season offers no recharge and any benefit depends on how the November–March rains actually materialise.

Health

Sustained heat about 1.7°C above normal raises heat-stress risk for outdoor workers, while heavier winter rains could expand mosquito breeding and vector-borne disease in coastal areas.

Energy

Analysts warn that a strong El Niño will have wide-ranging impacts on energy, from cooling demand during the hotter-than-normal season to shifts in global fuel and power markets.

Fisheries

Warmer Gulf and Red Sea waters associated with El Niño are expected to shift fish migration and productivity, with possible knock-on effects on catch sizes along both coasts.

What happened last time

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

2023-24

A strong El Niño contributed to above-average Gulf temperatures and unsettled winter weather, reinforcing the pattern of warmer seasons and variable winter rainfall.

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2015-16

A powerful El Niño coincided with heavy winter rainfall episodes in the Kingdom and elevated regional temperatures, straining drainage and road infrastructure in several cities.

unsourced background

1997-98

One of the strongest El Niño events on record, associated with a notably wetter winter across northern Saudi Arabia and the Gulf, with localised flooding in some areas.

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