Temperatures climb to very hot levels across most populated areas; coastal cities remain somewhat cooler but still warm. Expect high daytime heat and increased use of air conditioning in hotels and transport.
Mardetanha CC BY-SA 4.0 Wikimedia Commons
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Saudi Arabia in May.
Jeddah, Yanbu, Al Lith, coastal Tabuk
Coastal summer arrives in May with high humidity and temperatures frequently in the low to mid-30s°C; heat feels heavier because of the sea moisture. Yanbu can feel marginally drier than Jeddah but both cities demand early-morning or late-evening activity planning; snorkeling or diving trips set out before midday to avoid the worst heat. Bring light, moisture-wicking fabrics and be prepared for slower daytime sightseeing.
Taif, Abha, Al-Bahah, Jabal Sawda
By May the Sarawat foothills are warm but not oppressive; afternoons are pleasantly hot in Taif while nights are comfortable. As summer approaches, cloud cover and isolated thunderstorms become more likely in the highest ridges, especially in Asir. Packing layers remains practical: cool mornings, sun-baked afternoons and brisk evenings are typical.
Riyadh, Buraydah, Al Kharj
By May the Najd becomes markedly hot; Riyadh’s afternoons commonly push into the mid-30s°C and the air is dry, making sun exposure exhausting. Outdoor activities are best scheduled for dawn and dusk; indoor malls and air-conditioned museums are the default refuge. Travelers should expect minimal rainfall and to carry water and sun gear at all times.
Dammam, Khobar, Al-Ahsa, Jubail
May signals the start of a very uncomfortable period for sea-adjacent travel: high humidity coupled with rising temperatures produces oppressive heat by afternoon. Outdoor excursions should be early or late; the Gulf coast sees frequent haze and occasional thunderstorms that can trigger urban street pooling. Travelers should expect reduced outdoor activity and prioritize indoor plans.
Jazan, Najran, parts of Asir lowlands
May is the cusp of the late-spring warming and the start of the south’s tendency toward convective storms as monsoon moisture edges northward; late afternoon cloud buildups appear in the mountains. Coastal Jazan becomes sticky in the afternoons, so boat trips depart early. Expect more domestic visitors in popular spots as temperatures climb.
Empty Quarter, Al-Ahsa periphery, Salalah-adjacent influences
May ushers in extreme heat: daytime readings often climb above 40°C and the desert becomes an inhospitable place without proper support. Sand storms increase as winds stir the dry surface; sensible travelers restrict activity to dawn and dusk and ensure radios, extra fuel and water are carried. Remote camps will be hot and conceptually austere.
There are no major festivals or events in Saudi Arabia during May to be aware of.
See how May compares with the rest of the year, then read the full guide.