Short answer: late October through April is the best time — with the absolute sweet spot from late January through March (perfect daytime temps, long days and top course conditions). (StayHozho.com)

Why, and the details you’ll care about

• Weather and comfort: Daytime highs in the season above (Oct–Apr) are typically in the 60s–80s°F — ideal for golf. Winter (Dec–Mar) is the busiest/most reliably mild period. (golfcoursehomes.com)
• Peak vs shoulder vs value: Peak demand and prices = roughly November–April (book early, especially Feb–Mar). Shoulder months (Oct and April) can give nearly as-good conditions with lower rates. Summer (May–Sep) has the lowest green fees but very high temperatures. (azgolflessons.golf)
• Monsoon and heat warnings: Arizona’s monsoon runs roughly mid‑June through September (official guidance often lists June 15–Sept 30). Monsoon storms bring thunderstorms, lightning, heavy rain, flash flooding and dust storms — another reason to avoid July–August for a golf trip unless you plan dawn tee times and accept risk. (azwater.gov)

Quick planning tips

• Book well ahead for Feb–Mar and popular Scottsdale/Phoenix courses (weeks to months, depending on group size). (azgolflessons.golf)
• If you must go in summer to save money, play as early as possible (sunrise/first tee) and avoid midday heat; consider northern mountain courses (Flagstaff, Prescott, Sedona) for much cooler summer temperatures. (azgolflessons.golf)
• Pack for desert conditions: sun protection, layered clothing for cool mornings/warm afternoons, refillable water and electrolytes; watch local forecasts for monsoon/haboob alerts. (azwater.gov)

If you want, I can: suggest exact weeks to target based on your tolerance for crowds vs price, recommend Scottsdale/Phoenix vs Tucson vs northern-Arizona courses, or check tee-time availability and typical rates for specific courses and dates.