Cartagena weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cartagena in September. Check more long-term weather averages for Cartagena in September before you book your next holiday to Costa Blanca in 2025/2026.

  • 28°C maximum daytime temperature in September in Cartagena28
    28°C max day temperature
  • 7 hours of sunshine per day
  • 5 days with some rainfall in September in Cartagena5
    5 days with some rainfall
  • 19°C minimum night-time temperature in September in Cartagena19
    19°C min night temperature
  • 12 hours of daylight per day in September in Cartagena12
    12 hours of daylight per day
  • Moderate heat & humidity in September in CartagenaM
    Moderate heat & humidity
  • 26 mm monthly rainfall in September in Cartagena26
    26 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Cartagena7
    7 (High) UV index
  • 24°C sea temperature in September in Cartagena24
    24°C sea temperature

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The September weather guide for Costa Blanca (Cartagena) 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 the Costa Blanca

How hot is it in Cartagena in September?

Daytime temperatures usually reach 28°C in Cartagena in September with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Cartagena in September?

There are normally 7 hours of bright sunshine each day in Cartagena in September - that's 57% of daylight hours.

How warm is the sea around Cartagena in September?

The average sea temperature around Cartagena in September is 24°C.

Does it ever rain in Cartagena in September?

There are usually 5 days with some rain in Cartagena in September and the average monthly rainfall is 26mm.

Cartagena September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:34 19:33
Monday, 15th September 2025 06:46 19:12
Tuesday, 30th September 2025 06:59 18:48

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