Average temperatures, rainfall and packing tips for Phoenix, United States in May
May in Phoenix is typically very hot, with average daytime highs around 35°C and nights near 19°C. Temperature-wise it sits mid-range for Phoenix (the 5th warmest month).
May is essentially dry in Phoenix - rainfall is negligible on average and it is typically the driest month of the year.
If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.
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In May, Phoenix averages a daytime high of about 35°C and a night-time low of around 19°C, based on recent historical data.
May is essentially dry in Phoenix - rainfall is negligible on average and it is typically the driest month of the year.
May is seriously hot in Phoenix. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.