Delaware weather in May 2025

Expect 75°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Delaware in May. Check more long-term weather averages for Delaware in May before you book your next holiday to Delaware in 2025/2026.

  • 75°F maximum daytime temperature in May in Delaware (Dover)75
    75°F max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in May in Delaware (Dover)10
    10 days with some rainfall
  • 52°F minimum night-time temperature in May in Delaware (Dover)52
    52°F min night temperature
  • 14 hours of daylight per day in May in Delaware (Dover)14
    14 hours of daylight per day
  • No heat & humidity in May in Delaware (Dover)0
    No heat & humidity
  • 3.9 inches monthly rainfall in May in Delaware (Dover)3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Delaware (Dover)8
    8 (Very High) UV index

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The May weather guide for Delaware (Dover) 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.

Top Delaware destinations

Below are average maximum temperatures at popular countries, regions and places in Delaware in May. Select a holiday destination to see more weather parameters.

All Delaware destinations

Metric (°C)  |  Imperial (°F)

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How hot is it in Delaware in May?

Daytime temperatures usually reach 75°F in Dover, Delaware in May, falling to 52°F at night.

How sunny is it in Delaware in May?

There are normally 8 hours of bright sunshine each day in Dover, Delaware in May - that's 59% of daylight hours.

Does it rain in Delaware in May?

There are usually 10 days with some rain in Dover, Delaware in May and the average monthly rainfall is 3.9 inches.

Delaware May sunrise & sunset times

Browse the sunrise and sunset times for Delaware in May 2025. Select a month to view Delaware sunrise and sunset times for the next 12 months. The Delaware sunrise and sunset times shown below are for Dover.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:03 18:56
Friday, 16th May 2025 04:48 19:10
Saturday, 31st May 2025 04:38 19:22

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