Climate: King Abdullah Economic City (KAEC) and Jeddah summers are long, humid, arid, and partly cloudy. Winters are short, warm, dry, windy, and mostly clear. Annual temperature varies from 18.3 C (65°F) to 39 C (102°F) and is rarely below 15 C (59°F). The hot season lasts from late May to late September with an average daily high above 36.7 C (98°F). The cool season lasts from early December to early March with an average daily high below 30.6 C (87°F).