September in Phoenix, AZ: hot season for golf — play early; afternoons are oppressive. Best tee times: tee off before 8 AM to beat the heat.
| Average September Weather | |
|---|---|
| Avg daily high | 101°F |
| Avg daily low | 77°F |
| Rainy days | 3 / mo |
| Avg peak wind | 11.8 mph |
September reshapes how you approach the tee sheet in Phoenix more than almost any other month. The average high sits at 101°F — still the fourth-hottest month of the year — but the monsoon rain pattern that hammered August (7 precip days) has largely cleared out, dropping to just 3 precip days in September. That combination means courses are more reliably open and playable, yet the heat still demands you treat every round as a logistics exercise, not a casual outing.
The 24°F daily swing between the 77°F low and 101°F high is the strategic variable here. Morning tee times booked as early as 6 AM can put you finishing your round before temperatures climb into the danger zone. Last-minute afternoon slots, which often open up in August due to storm cancellations, are far less appealing in September — the skies are clearer, but standing on a 101°F fairway at 2 PM is a different kind of punishment.
With only 3 precip days and mostly clear mornings, early tee times (6–8 AM) will book fast as golfers chase the cooler window before the high reaches 101°F — reserve at least a week out for weekend dawn slots. Afternoon cancellations and walk-on availability are more common mid-month as casual players avoid the heat, so if an early time isn't available, check for same-day openings after 4 PM when temperatures begin their descent from the daily peak. See how conditions rate hour by hour on our playability scale.
September marks a meaningful improvement over August: four fewer rain days and a 3°F drop in the average high make tee-sheet disruptions far less common, and peak winds ease slightly from 12.4 mph to 11.8 mph. October, however, is the real turning point — the average high falls another 11°F to 90°F, one fewer rain day, and winds calm to 10.2 mph, making mid-day rounds genuinely viable in a way they simply aren't in September. Think of September as the transition month where the schedule opens up but the thermometer still dictates your strategy.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Phoenix, AZ for the current playability rating, hourly wind, temperature, and the recommended tee time window.
← August in Phoenix, AZ • October in Phoenix, AZ →
At an average high of 101°F, September is the fourth-hottest month of the year in Phoenix, so midday rounds are genuinely uncomfortable and carry real heat-risk. Early morning tee times starting at 6 AM are the standard workaround — finishing by 10–11 AM keeps you ahead of the worst heat. Golfers who can't secure a morning slot should wait for late-afternoon times after 4 PM when temperatures start to fall.
The bulk of monsoon activity peaks in July and August; by September, precip days drop to just 3, compared to 7 in August. That means course closures and cart restrictions from storm damage are much less frequent, and afternoon thunderstorms — while still possible — are relatively rare. It's worth checking the course's conditions line if a storm does pass through, since desert terrain can drain slowly in low-lying areas.