Southern Spain, particularly the Andalusia region (cities like Seville, Málaga, and Córdoba), is pleasantly warm in April, making it one of the best times to visit before the sweltering summer heat arrives. Daytime temperatures typically range from 18°C to 24°C (64°F to 75°F). In a "heatwave" year like some observed in early 2026, Seville can occasionally hit 30°C (86°F) even in April. However, evenings remain crisp, often dropping to 10°C or 12°C (50°F to 54°F), so a jacket is essential. This period coincides with the famous Semana Santa (Holy Week) and the Feria de Abril in Seville. While the Mediterranean sea is still too cold for most to swim (around 16°C), the sun is strong and consistent, providing roughly 8 hours of sunshine per day. It is the perfect 2026 climate for sightseeing without the exhaustion of the July "oven" temperatures.