
Weather in Riyadh
Desert heat: summer daytime maxima 35-45C, mild winters, and a legally mandated midday outdoor-work ban Jun 15-Sep 15.
Saudi Arabia's national meteorological service describes a semi-arid to dry desert climate with hot days, cool nights and very low annual rainfall; maximum temperatures run 35-45C in summer (Jun-Aug) and 20-30C in winter (Dec-Feb).
Rain in central Saudi Arabia (Riyadh's region) falls in winter, brought by Mediterranean weather systems; summer monsoon rain is a southwestern phenomenon, not a Riyadh one.
The heat is treated as a legal occupational hazard: the Ministry of Human Resources and Social Development bans private-sector outdoor work daily from 12:00 to 15:00 between June 15 and September 15 (2026 enforcement confirmed via the state press agency). Plan outdoor errands and sightseeing outside those hours in summer.
Spring (Mar-May) already reaches 30-40C maxima and autumn (Sep-Nov) 25-35C, so "shoulder season" in Riyadh is still hot by most crews' standards.
- National Center for Meteorology (Saudi Arabia) — Climate of the Kingdom · checked 2026-08-18
- Saudi Press Agency — Midday Outdoor Work Ban Begins June 15 (MHRSD announcement) · checked 2026-08-18