Rockland weather in September 2025

Expect 21°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Rockland in September. Check more long-term weather averages for Rockland in September before you book your next holiday to Maine in 2025/2026.

  • 21°C maximum daytime temperature in September in Rockland21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in Rockland9
    9 days with some rainfall
  • 10°C minimum night-time temperature in September in Rockland10
    10°C min night temperature
  • 12 hours of daylight per day in September in Rockland12
    12 hours of daylight per day
  • No heat & humidity in September in Rockland0
    No heat & humidity
  • 92 mm monthly rainfall in September in Rockland92
    92 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Rockland5
    5 (Moderate) UV index
  • 13°C sea temperature in September in Rockland13
    13°C sea temperature

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The September weather guide for Maine (Rockland) 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 Rockland in September?

Daytime temperatures usually reach 21°C in Rockland in September, falling to 10°C at night.

How sunny is it in Rockland in September?

There are normally 7 hours of bright sunshine each day in Rockland in September - that's 53% of daylight hours.

How warm is the sea around Rockland in September?

The average sea temperature around Rockland in September is 13°C.

Does it rain in Rockland in September?

There are usually 9 days with some rain in Rockland in September and the average monthly rainfall is 92mm.

What is the chance of a hurricane in Rockland in September?

On average less than 1 day in September in Rockland is likely to be affected by the passage of one or more tropical storms.

Rockland September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:00 18:12
Monday, 15th September 2025 05:16 17:46
Tuesday, 30th September 2025 05:33 17:19

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