Portland weather in June 2026

Expect daytime maximum temperatures of 23°C in Portland, Maine in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 85 mm of rainfall in the month.

  • 23°C maximum daytime temperature in June in Portland23
    23°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in June in Portland11
    11 days with some rainfall
  • 11°C minimum night-time temperature in June in Portland11
    11°C min night temperature
  • 15 hours of daylight per day in June in Portland15
    15 hours of daylight per day
  • No heat & humidity in June in Portland0
    No heat & humidity
  • 85 mm monthly rainfall in June in Portland85
    85 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in June in Portland8
    8 (Very High) UV index
  • 12°C sea temperature in June in Portland12
    12°C sea temperature

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The June weather guide for Maine (Portland) 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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How hot is it in Portland in June?

Daytime temperatures usually reach 23°C in Portland in June, falling to 11°C at night.

How sunny is it in Portland in June?

There are normally 8 hours of bright sunshine each day in Portland in June - that's 51% of daylight hours.

Does it rain in Portland in June?

There are usually 12 days with some rain in Portland in June and the average monthly rainfall is 87mm.

Portland June sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st June 2026 04:02 19:16
Monday, 15th June 2026 03:59 19:24
Tuesday, 30th June 2026 04:03 19:26

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