Constanta weather in September 2025

Expect daytime maximum temperatures of 72°F in Constanta, Romania in September based on long-term weather averages. There are 6 hours of sunshine per day on average.

  • 72°F maximum daytime temperature in September in Constanta72
    72°F max day temperature
  • 6 hours of sunshine per day
  • 5 days with some rainfall in September in Constanta5
    5 days with some rainfall
  • 57°F minimum night-time temperature in September in Constanta57
    57°F min night temperature
  • 12 hours of daylight per day in September in Constanta12
    12 hours of daylight per day
  • No heat & humidity in September in Constanta0
    No heat & humidity
  • 1.2 inches monthly rainfall in September in Constanta1.2
    1.2 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Constanta5
    5 (Moderate) UV index
  • 70°F sea temperature in September in Constanta70
    70°F sea temperature

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The September weather guide for Romania (Constanta) 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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How hot is it in Constanta in September?

Daytime temperatures usually reach 72°F in Constanta in September, falling to 57°F at night.

How sunny is it in Constanta in September?

There are normally 6 hours of bright sunshine each day in Constanta in September - that's 47% of daylight hours.

How warm is the sea around Constanta in September?

The average sea temperature around Constanta in September is 70°F.

Does it rain in Constanta in September?

There are usually 5 days with some rain in Constanta in September and the average monthly rainfall is 1.2 inches.

Constanta September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:28 18:42
Monday, 15th September 2025 05:45 18:16
Tuesday, 30th September 2025 06:02 17:48

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