Weather in Costa Blanca in October

How October compares

October is the 5th warmest month of the year in Costa Blanca. Within Spain it is 34th of 87 (Spain in October). Against London's average high of 14.6°C in October, Costa Blanca is 8.5°C warmer by day and 8.0°C warmer at night.

Daytime and night-time in October

The typical October day in Costa Blanca peaks at 23.1°C, but that is an average: the warmest 10% of days reach 26.5°C or more. Roughly 1 in 4 days top 25°C and 1 in 111 pass 30°C. Nights average 16.4°C; one night in ten drops to 13.3°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest October day here reached 32.3°C (2013-10-01) and the coldest night 6.7°C (2018-10-29).

Rain in October

Some rain (4-8 rainy days): about 7 days with 1 mm or more, 60 mm in total. Year to year it varies a lot - the wettest October was 2007 with 282 mm, the driest 1998 with 1 mm. Humidity averages 72%.

Sea temperature in October

The sea averages 22.1°C - warm enough to swim (22°c+). Depending on the year it ranges from 20.6°C to 23.4°C. For the warmest sea here, come in August (26.4°C).

Sunshine and daylight

Around 6.0 hours of sunshine a day (estimated from cloud cover), 11.0 hours of daylight: the sun rises about 08:11 and sets about 19:25 local time in mid-October. Average cloud cover is 46%.

Is October a good time to visit Costa Blanca?

It is a reasonable choice: warm days. The best months for Costa Blanca on our scoring are July, June, August; months averaging 25°C or more: Jun, Jul, Aug, Sep.

Warm days, with a noticeable lift from London

October feels substantially warmer than London: the average daytime high is 23.1°C, a difference of 8.5°C. That makes light daytime clothing a sensible starting point, with an extra layer for sitting outside after dark. Days reach 25°C about 25% of the time, so there is scope for warmer afternoons, but you should not pack solely for heat. At night, the average low is 16.4°C, while the coldest 10% of nights fall to 13.3°C or below. This balance suits being out and about without seeking intense heat; if hot evenings are essential to your holiday, October is less convincing.

Allow for rain rather than planning around it

There are about 7 rainy days in October, so a completely dry holiday is not something to rely on. Equally, rain need not dominate your plans: the month averages about 6 hours of sunshine within 11 hours of daylight. Keep outdoor plans movable and pack a light waterproof, rather than treating the whole trip as a fixed run of beach days. Those sunshine figures do not mean every day follows the same pattern, or that rain is confined to a convenient part of the day. October works best if you are happy to adjust to the forecast and make use of brighter spells.

Swimming is realistic, but bring a layer for afterwards

The sea averages 22.1°C, which puts October on the swimming side of the comfort line rather than firmly in bracing territory. The year-to-year range is 21°C to 23°C, so your tolerance for cooler water still matters. If swimming is part of the holiday rather than its sole purpose, this is a reasonable month to choose. Take swimwear, but also something dry to put on afterwards and a light jumper or jacket for evenings. With average daytime warmth and some rain in the mix, a flexible combination of swimming, time outdoors and sheltered breaks makes more sense than assuming all-day beach conditions.