Cartagena weather in July 2026

Q: How hot is it in Cartagena in July?

Daytime temperatures usually reach 29°C in Cartagena in July with high heat and humidity, falling to 19°C at night.

Q: How sunny is it in Cartagena in July?

There are normally 11 hours of bright sunshine each day in Cartagena in July - that's 72% of daylight hours.

Q: How warm is the sea around Cartagena in July?

The average sea temperature around Cartagena in July is 25°C.

Q: Does it ever rain in Cartagena in July?

There are usually 3 days with some rain in Cartagena in July and the average monthly rainfall is 10mm.

Expect daytime maximum temperatures of 29°C in Cartagena, Costa Blanca in July and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average.

29
29°C max day temperature
10
10 hours of sunshine per day
3
3 days with some rainfall
20
20°C min night temperature
14
14 hours of daylight per day
H
High heat & humidity
5
5 mm of monthly rainfall
10
10 (Very High) UV index
24
24°C sea temperature

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The July 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)