Weather in Costa Blanca in January

How January compares

January is the 12th warmest month of the year in Costa Blanca. Within Spain it is 39th of 87 (Spain in January). Against London's average high of 7.4°C in January, Costa Blanca is 7.6°C warmer by day and 5.9°C warmer at night.

Daytime and night-time in January

The typical January day in Costa Blanca peaks at 15.0°C, but that is an average: the warmest 10% of days reach 18.5°C or more. Days over 25°C are rare. Nights average 8.1°C; one night in ten drops to 5.0°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest January day here reached 23.8°C (2018-01-21) and the coldest night -1.9°C (2005-01-28).

Rain in January

Some rain (4-8 rainy days): about 6 days with 1 mm or more, 46 mm in total. Year to year it varies a lot - the wettest January was 1991 with 207 mm, the driest 1993 with 0 mm. Humidity averages 72%.

Sea temperature in January

The sea averages 14.6°C - too cold for most (under 18°c). Depending on the year it ranges from 14.1°C to 15.3°C. For the warmest sea here, come in August (26.4°C).

Sunshine and daylight

Around 5.5 hours of sunshine a day (estimated from cloud cover), 9.6 hours of daylight: the sun rises about 08:18 and sets about 18:04 local time in mid-January. Average cloud cover is 43%.

Is January a good time to visit Costa Blanca?

January is not the strongest month here: mild days. The best months for Costa Blanca on our scoring are July, June, August; months averaging 25°C or more: Jun, Jul, Aug, Sep.

Mild afternoons, cold evenings

January is Costa Blanca's coldest month, so treat it as a milder winter break rather than an early taste of summer. A daytime high of 15°C makes walking more appealing than sitting still outdoors for long stretches, especially once the sun goes. The warmer days reach 18.5°C or more, but that is a bonus rather than a sensible packing assumption. Bring layers you can remove during the afternoon, plus a warm jacket for evenings. Nights average around 8°C, and the coldest can fall to 5°C or below. Keep your longer outdoor plans for the warmer part of the day rather than relying on comfortable mornings or after-dark temperatures.

Make the most of daylight, with room for rain

There is useful scope for time outside, with about 5.5 hours of sunshine within 9.6 hours of daylight. That supports a relaxed outdoor holiday, but not an assumption of clear skies from breakfast onwards. Around 6 days have measurable rain, so a waterproof jacket belongs in your bag alongside sunglasses. Keep your plans movable rather than assigning every outdoor outing to a fixed day. Rain need not define the trip, but you should be comfortable changing plans when it arrives. Start outings early enough to use the daylight, and leave room for a sheltered break rather than expecting to spend every waking hour outdoors.