Navan weather in September 2025

Expect daytime maximum temperatures of 17°C in Navan in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 81 mm of rainfall in the month.

  • 17°C maximum daytime temperature in September in Navan17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Navan17
    17 days with some rainfall
  • 9°C minimum night-time temperature in September in Navan9
    9°C min night temperature
  • 13 hours of daylight per day in September in Navan13
    13 hours of daylight per day
  • No heat & humidity in September in Navan0
    No heat & humidity
  • 81 mm monthly rainfall in September in Navan81
    81 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Navan4
    4 (Moderate) UV index

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The September weather guide for Ireland (Navan) 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 Ireland

How warm is it in Navan in September?

Daytime temperatures usually reach 17°C in Navan in September, falling to 9°C at night.

How sunny is it in Navan in September?

There are normally 4 hours of bright sunshine each day in Navan in September - that's 30% of daylight hours.

Does it rain in Navan in September?

There are usually 17 days with some rain in Navan in September and the average monthly rainfall is 81mm.

Navan September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:36 19:16
Monday, 15th September 2025 06:00 18:42
Tuesday, 30th September 2025 06:27 18:05

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