Grand Canyon weather in May 2025

Expect 25°C daytime maximum temperatures in the shade with on average 12 hours of sunshine per day in Grand Canyon in May. Check more long-term weather averages for Grand Canyon in May before you book your next holiday to Arizona in 2025/2026.

  • 25°C maximum daytime temperature in May in Grand Canyon25
    25°C max day temperature
  • 12 hours of sunshine per day
  • 3 days with some rainfall in May in Grand Canyon3
    3 days with some rainfall
  • 6°C minimum night-time temperature in May in Grand Canyon6
    6°C min night temperature
  • 14 hours of daylight per day in May in Grand Canyon14
    14 hours of daylight per day
  • No heat & humidity in May in Grand Canyon0
    No heat & humidity
  • 23 mm monthly rainfall in May in Grand Canyon23
    23 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in May in Grand Canyon10
    10 (Very High) UV index

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The May weather guide for Arizona (Grand Canyon) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Arizona

How hot is it in Grand Canyon in May?

Daytime temperatures usually reach 25°C in Grand Canyon in May with no heat and humidity, falling to 6°C at night.

How sunny is it in Grand Canyon in May?

There are normally 12 hours of bright sunshine each day in Grand Canyon in May - that's 84% of daylight hours.

Does it ever rain in Grand Canyon in May?

There are usually 3 days with some rain in Grand Canyon in May and the average monthly rainfall is 23mm.

Grand Canyon May sunrise & sunset times

Browse the sunrise and sunset times for Grand Canyon in May 2025. Select a month to view Grand Canyon sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:35 19:16
Friday, 16th May 2025 05:22 19:29
Saturday, 31st May 2025 05:13 19:40

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