Monterosso weather in September 2025

Expect 22°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Monterosso in September. Check more long-term weather averages for Monterosso in September before you book your next holiday to Italian Riviera in 2025/2026.

  • 22°C maximum daytime temperature in September in Monterosso22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in Monterosso9
    9 days with some rainfall
  • 14°C minimum night-time temperature in September in Monterosso14
    14°C min night temperature
  • 12 hours of daylight per day in September in Monterosso12
    12 hours of daylight per day
  • No heat & humidity in September in Monterosso0
    No heat & humidity
  • 88 mm monthly rainfall in September in Monterosso88
    88 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Monterosso5
    5 (Moderate) UV index
  • 23°C sea temperature in September in Monterosso23
    23°C sea temperature

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The September weather guide for Italian Riviera (Monterosso) 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 Italy

How hot is it in Monterosso in September?

Daytime temperatures usually reach 22°C in Monterosso in September, falling to 14°C at night.

How sunny is it in Monterosso in September?

There are normally 7 hours of bright sunshine each day in Monterosso in September - that's 54% of daylight hours.

How warm is the sea around Monterosso in September?

The average sea temperature around Monterosso in September is 23°C.

Does it rain in Monterosso in September?

There are usually 9 days with some rain in Monterosso in September and the average monthly rainfall is 88mm.

Monterosso September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:45 18:57
Monday, 15th September 2025 06:01 18:32
Tuesday, 30th September 2025 06:18 18:04

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