Phoenix weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: November – April
What is the weather like in Phoenix in May?
In May, Phoenix is very hot: daytime highs average 34 °C, and nights cool down to about 19 °C. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 26 days the thermometer climbs to 30 °C or more. All in all, May is a so-so month for a holiday in Phoenix.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 52 min05:28 – 19:20
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 18 %on averageAll months
- Hot days
- 26 days30 °C or moreAll months
- Time zone
- UTC−7America/Phoenix
How the score comes together
- Temperatureweight 50 %8 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Phoenix in May: quick answers
Is Phoenix hot in May?
Yes. In May, Phoenix is very hot: daytime highs average 34 °C and nights stay around 19 °C. On about 26 days the thermometer climbs to 30 °C or more.
Does it rain much in Phoenix in May?
It hardly ever rains.
Phoenix month by month
The whole year in PhoenixAll destinations: USAWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences