Expect 31°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Seville in June. Check more long-term weather averages for Seville in June before you book your next holiday to Costa de la Luz in 2024/2025. 31. 31°C max day temperature. 11. 11 hours of sunshine per day. 5. Costa de la Luz has dry periods in June, July and August. December is the wettest month in Costa de la Luz. This month should be avoided if you are not a big fan of rain. July is the driest month. The warmest month in Costa de la Luz is August with an average maximum temperature of 27°C (81°F). Xpn1.