May · United States
Best time to visit Phoenix in May Weather, crowds & prices
Weather in Phoenix in May
Average temperature 26°C, 2 mm of rain, about 31 days with 6+ hours of sunshine and 21% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
7.5/10
Ranked #8 of 12 months
- Avg temp
- 26°C
- Rainfall
- 2 mm
- Humidity
- 21%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Phoenix scores 7.5/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 26°C, 2 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Phoenix spreads across the Sonoran desert, with mountain trails, resorts and saguaro forests around it.
May holds up well in Phoenix — 8th best month
Days in May average 26°C (79°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
At just 2 mm for the month, rain will not shape your plans; you get about 31 days with 6+ hours of sunshine and 13.7 hours of daylight.
That is 7.5/10 on the same scale — 8th of 12 months, versus 9.6/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, March is materially better in Phoenix — 2.1 points higher on the same scale.
Frequently asked
- What is the weather like in Phoenix in May?
- In May, Phoenix averages 26°C, 2 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 7.5/10.
- Is May a good time to visit Phoenix?
- May earns a 7.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Phoenix in May?
- Expect about 2 mm of rain in May. Average humidity is 21% and there are about 31 days with 6+ hours of sunshine.
Curated in Phoenix
Tickets & experiences
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Phoenix, United States. Live activities and tours from GetYourGuide, matched to this destination.