Costa Blanca weather by month

When to go to Costa Blanca

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August, September. September is the wettest month (60 mm, about 7 rainy days) and July the driest (6 mm). The sea is warmest in August at 26.4°C and coolest in February at 13.8°C.

Getting there

A direct flight from London Gatwick to Alicante-Elche Miguel Hernández Airport (ALC, 10 km from Alicante) takes roughly 2 h 30 min - short-haul (up to 4.5 h) by UK standards. Time-zone: Europe/Madrid.

Records and extremes, 1991-2020

The hottest day recorded in Costa Blanca between 1991 and 2020 reached 40.9°C on 4 July 1994; the coldest fell to -1.9°C on 28 January 2005. In August one day in ten tops 32.7°C and about 52% of days pass 30°C; in January one night in ten drops to 5.0°C or below. The wettest single month of the period was October 2007 with 282 mm, against a October average of 60 mm.

Winter into spring: December to April

Winter suits travellers who prefer mild daytime weather to heat, provided they pack for cool evenings. December averages 16°C by day, January 15°C and February 16°C, so a sunny afternoon can feel pleasant without making this a warm-weather beach break. January and February nights average 8°C; bring a jacket rather than relying on light holiday clothes. March lifts daytime temperatures to 18°C, and April reaches 20°C, making spring more comfortable for long spells outdoors. The catch is the sea: even April averages just 16°C. Rain is also possible throughout this period, with each month averaging 6 rainy days, so keep outdoor plans flexible.

Late spring and summer: May to August

May is a useful compromise if you want warmth without the strongest summer heat: days average 23°C, though the 18°C sea may still feel brisk. June makes a clearer beach-holiday choice, pairing 27°C afternoons with a 22°C sea and just 2 rainy days on average. July is drier still and has 12 hours of sunshine a day, but its 30°C daytime average makes shade and a midday pause sensible. August stays similarly hot, with the warmest monthly sea average at 26°C. Nights in July and August average 22°C, so choose light clothing for evenings and consider how comfortably you sleep in warm conditions.

Autumn: September to November

September keeps much of summer's warmth, with days averaging 27°C and the sea 25°C. It suits swimming-focused trips if you can accept a greater chance of rain than in midsummer. October offers a gentler balance: daytime temperatures average 23°C and the sea holds at 22°C, while evenings call for an extra layer. Both months average 7 rainy days, so avoid making every plan depend on dry weather. By November, the daytime average falls to 18°C and nights to 12°C. The 19°C sea may appeal to swimmers comfortable with cooler water, but November is better suited to time outdoors in layers than a holiday centred on sunbathing.