Wilmington weather in May 2025

Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Wilmington in May. Check more long-term weather averages for Wilmington in May before you book your next holiday to Delaware in 2025/2026.

  • 23°C maximum daytime temperature in May in Wilmington23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Wilmington11
    11 days with some rainfall
  • 11°C minimum night-time temperature in May in Wilmington11
    11°C min night temperature
  • 14 hours of daylight per day in May in Wilmington14
    14 hours of daylight per day
  • No heat & humidity in May in Wilmington0
    No heat & humidity
  • 104 mm monthly rainfall in May in Wilmington104
    104 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Wilmington8
    8 (Very High) UV index
  • 12°C sea temperature in May in Wilmington12
    12°C sea temperature

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The May weather guide for Delaware (Wilmington) 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 the USA

How hot is it in Wilmington in May?

Daytime temperatures usually reach 23°C in Wilmington in May, falling to 11°C at night.

How sunny is it in Wilmington in May?

There are normally 8 hours of bright sunshine each day in Wilmington in May - that's 56% of daylight hours.

How warm is the sea around Wilmington in May?

The average sea temperature around Wilmington in May is 12°C.

Does it rain in Wilmington in May?

There are usually 11 days with some rain in Wilmington in May and the average monthly rainfall is 104mm.

Wilmington May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:02 18:57
Friday, 16th May 2025 04:46 19:11
Saturday, 31st May 2025 04:37 19:24

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