Wilmington weather in May 2026

Expect daytime maximum temperatures of 73°F in Wilmington, Delaware in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 4.1 inches of rainfall in the month.

  • 73°F maximum daytime temperature in May in Wilmington73
    73°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Wilmington11
    11 days with some rainfall
  • 52°F minimum night-time temperature in May in Wilmington52
    52°F 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
  • 4.1 inches monthly rainfall in May in Wilmington4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Wilmington8
    8 (Very High) UV index
  • 54°F sea temperature in May in Wilmington54
    54°F 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)  |  Imperial (°F)

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More about the USA

How hot is it in Wilmington in May?

Daytime temperatures usually reach 73°F in Wilmington in May, falling to 52°F 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 54°F.

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 4.1 inches.

Wilmington May sunrise & sunset times

Browse the sunrise and sunset times for Wilmington in May 2026. Select a month to view Wilmington sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:03 18:57
Saturday, 16th May 2026 04:47 19:11
Sunday, 31st May 2026 04:37 19:24

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