The month in detail
What to expect in September
Autumn marks the end of peak season in Phoenix. Temperatures drop (38°C) and rain returns (9% of days). Rain is virtually absent (9% of days) — ideal for planning without a backup.
September ranks 9 out of 12 months in Phoenix. Compared to August: −2°C daytime, −0.6h of sun per day.
This month's conditions
What it's like in September
UV index
7 · high
sunscreen and hat advised
Feels like
comfortable
10°
Daylight
12.2h of daylight
Air quality
good
AQI 38
Compare
Is September the right month?
The best month in Phoenix is April (9.5/10), 6.2 pts higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Phoenix
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Phoenix
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.
Country · United States
🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘStable
🔥Hottest monthJuly · 42°C
❄️Coolest monthJanuary · 18°C
🌧️Rainiest month ⓘJuly · 12%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Similar climate
OuarzazateMoroccoLas VegasUSA
Ras al-KhaimahUnited Arab EmiratesAbu DhabiUAE
Wadi RumJordan
Location
Where is Phoenix ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
United StatesTemperate climate with a 9.5 → 2.5 gap between best and worst month. 10 years of ERA5 data to choose by project.
33.45°N · 112.07°W
Questions
Frequently asked questions
What is the best time to visit Phoenix?
April is the best month with 31.0°C highs, 15.0°C lows, 11.8h of sunshine and 3.0% rainy days. The months of April & March offer comparable conditions.
How many hours of sunshine does Phoenix get in April?
Phoenix averages 11.8 sunshine hours per day in April. It is the sunniest month with a climate score of 9.3/10.
What is the rainiest month in Phoenix?
July is the most unfavourable month with July has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Phoenix in April?
In April, overnight lows reach 15.0°C, while afternoon highs average 31.0°C.
Is Phoenix good in winter?
In winter (December-February), Phoenix scores 7.6/10 on average — Decent period conditions for cultural visits.. The best month overall remains April with a score of 9.3/10.
When should you avoid Phoenix?
July is the most difficult month to visit Phoenix, with July has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Phoenix in September?
The average UV index reaches 7 in September in Phoenix (high), with about 12.2h of daylight. Sunscreen and hat advised.