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Last update: 10:00, 5 Jul 2026
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Sharma is a coastal settlement on Saudi Arabia's Gulf of Aqaba shoreline in Tabuk Province, serving as a key logistics hub for the NEOM giga-project — a SAR 500 billion+ megadevelopment that includes The Line, Sindalah island resort, and Amaala luxury retreat. Rain here is rare (~20-30 mm annually, peak January) but the terrain creates outsized risk when it does arrive: Jabal al-Lawz mountains (~2,549 m, one of the highest peaks in Arabia) rise 50 km east, and wadi systems descending from the Hejaz foothills channel intense rainfall toward the coastal plain at speed.
Research published in Science Advances documented a violent flash flood at Wadi Al Tayyib — just 10 km south of NEOM's study area — following a 41-mm rain event in October 2018, with a sediment plume drifting into the Red Sea for more than a day after the storm. NEOM construction sites in the Sharma coastal zone are exposed to these wadi events, and the Sindalah island marine construction faces Red Sea swell from winter frontal systems. A Sharma rain radar must track both the inland wadi risk and the Gulf of Aqaba coastal weather.
RainViewer pulls radar data from regional meteorological networks, updated every 5 minutes.
Peak January-February frontal activity from Mediterranean low-pressure systems. Cold nights (7°C January), mild days (20°C).
Optimal outdoor construction window October-April aligns with minimal rain probability but not zero. A single January wadi event can set back earthworks significantly.
Zero rainfall. Red Sea heat and humidity peak. Construction on sheltered indoor elements.
Sharma serves as the primary logistics hub for NEOM's construction phase. Flash floods from Hejaz wadi systems can damage earthworks, wash out access roads, and endanger workers in lower-elevation construction zones. The 2018 Wadi Al Tayyib event demonstrated real risk within the project footprint. Radar monitoring 20-30 minutes ahead lets site managers halt excavation near wadi crossings and preposition drainage equipment.
Luxury marine construction at Sindalah island and Amaala resort involves sensitive infrastructure exposed to Red Sea swell during winter frontal systems. Checking the radar helps marine construction teams decide whether to proceed with below-water work or suspend operations due to incoming weather.
Sharma is expected to attract premium tourism in the November-March window. Rare but intense winter rain events cancel outdoor experiences. Resort operators need 30-60 minutes of advance warning to prepare guests and move activities indoors.
RainViewer aggregates radar data for Saudi Arabia from regional meteorological networks, updated every 5 minutes. Coverage focuses on the populated Hejaz corridor (Jeddah, Makkah, Madinah), the Najd plateau (Riyadh and central oasis cities), and the Eastern Province Gulf coast (Dammam, Al Khobar, Al Jubail). Coverage in remote interior desert and southern highlands varies.
Rain is rare — roughly 5-7 rainy days per year. If you see a cell on the radar approaching from the east (Hejaz mountains direction) or northwest (Mediterranean frontal track), expect flash-flood risk in wadi corridors within 20-30 minutes. Coastal rain directly from the Red Sea is less common but possible during winter frontal systems.
Yes. Documented 2018 research at Wadi Al Tayyib — within NEOM's project footprint — confirmed violent flash flooding from a 41-mm rain event. With major earthworks underway, wadi crossings and excavation zones are exposed.
December-March offers mild temperatures (17-24°C) with minimal rain probability. January-February carries slightly higher rain risk but is still mostly dry. May-September is dry but very hot.
Wadi flash floods from Hejaz mountains can reach Sharma's NEOM construction zones within 20 minutes of mountain storms.
Standard weather apps update once or twice a day. By then, the flash flood is either done or parked over your location — you've lost the decision window.
Your forecast app shows 'clear with isolated showers.' RainViewer shows a frontal cell building over Jabal al-Lawz, tracking toward the Sharma coastal plain in 25 minutes.
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