Denia weather in August 2026

Q: How hot is it in Denia in August?

Daytime temperatures usually reach 30°C in Denia in August with high heat and humidity, falling to 20°C at night.

Q: How sunny is it in Denia in August?

There are normally 10 hours of bright sunshine each day in Denia in August - that's 70% of daylight hours.

Q: How warm is the sea around Denia in August?

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

Q: Does it rain in Denia in August?

There are usually 4 days with some rain in Denia in August and the average monthly rainfall is 18mm.

Expect daytime maximum temperatures of 30°C in Denia, 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.

30
30°C max day temperature
9
9 hours of sunshine per day
4
4 days with some rainfall
21
21°C min night temperature
14
14 hours of daylight per day
H
High heat & humidity
19
19 mm of monthly rainfall
8
8 (Very High) UV index
26
26°C sea temperature

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The August weather guide for Costa Blanca (Denia) 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)