Cartagena weather in August 2025

Expect daytime maximum temperatures of 29°C in Cartagena, Costa Blanca in August and high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 29°C maximum daytime temperature in August in Cartagena29
    29°C max day temperature
  • 9 hours of sunshine per day
  • 3 days with some rainfall in August in Cartagena3
    3 days with some rainfall
  • 21°C minimum night-time temperature in August in Cartagena21
    21°C min night temperature
  • 14 hours of daylight per day in August in Cartagena14
    14 hours of daylight per day
  • High heat & humidity in August in CartagenaH
    High heat & humidity
  • 8 mm monthly rainfall in August in Cartagena8
    8 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Cartagena9
    9 (Very High) UV index
  • 26°C sea temperature in August in Cartagena26
    26°C sea temperature

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The August 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 August?

Daytime temperatures usually reach 29°C in Cartagena in August with high heat and humidity, falling to 21°C at night.

How sunny is it in Cartagena in August?

There are normally 9 hours of bright sunshine each day in Cartagena in August - that's 66% of daylight hours.

How warm is the sea around Cartagena in August?

The average sea temperature around Cartagena in August is 26°C.

Does it ever rain in Cartagena in August?

There are usually 3 days with some rain in Cartagena in August and the average monthly rainfall is 8mm.

Cartagena August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:08 20:12
Saturday, 16th August 2025 06:21 19:55
Sunday, 31st August 2025 06:33 19:34

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