SeasonScore
Phoenix, United States
Photo: DPPed · CC BY-SA 3.0

United States

Phoenix in May

🔥 Hot season

Hot and mostly dry.

🎒 Pack: light, breathable clothes & sunscreen · sunglasses & hat

Best months: Mar (9.4), Apr (9.3), Nov (9.3)

‹
Every month at a glanceTap a month to open it
›

Why May scores 8.9What goes into the score

How it works
🌡️ 35° / 21°C🌧️ 3 mm💧 dew pt 1°🍃 PM2.5 12
  • Weather comfort8.7
    • !Hot (35°C highs / 21°C lows)
    • ✓Comfortable humidity (dew point 0.6°C)
    • ✓Mostly dry (~3 mm rain)
  • Air quality8.8
    • ✓Good (within WHO guideline) (PM2.5 ~12 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut May side by side with another month
MayMar
Score8.9 Excellent9.4 Excellent
Season🔥 Hot season☀️ Warm dry season
High / low35° / 21°26° / 13°
Rain3 mm21 mm
Humiditydew pt 1°dew pt 1°
PM2.512 µg/m³12 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Phoenix Sky Harbor weather-station normals. Rainfall: Phoenix Sky Harbor Airport weather-station normals (national met service).

Holidays & crowdsMay 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Memorial Day 29–31 May · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore PhoenixEvents, sights, food & souvenirs

Check event dates locally

The capital of Arizona in the Sonoran Desert, known for desert hiking, saguaro landscapes, golf, spring training baseball and Native American art.

Events in May

No major events on our calendar for May.

Coming up later

Las Noches de las LuminariasDate variesUsually late November and December, select nights

Thousands of candle-lit paper bags line the garden paths with live music.

Why go: Tickets sell out; book early.

Where: Desert Botanical Garden

WM Phoenix OpenDate variesUsually early February

A PGA Tour golf event known for huge, rowdy crowds at the 16th hole.

Why go: One of the best-attended golf tournaments in the world.

Where: TPC Scottsdale

Cactus League spring trainingDate variesUsually late February to late March

Major League Baseball teams hold spring training games in the area.

Why go: Tickets are cheaper than regular season and stadiums are small.

Where: Ballparks across the metro area