Cadiz weather by month

When to go to Cadiz

For beach weather, look at months where the daytime average clears 25°C and rainy days stay low: June, July, August, September. December is the wettest month (80 mm, about 8 rainy days) and July the driest (1 mm). The sea is warmest in August at 23.3°C and coolest in February at 14.9°C.

Getting there

A direct flight from London Gatwick to Jerez Airport (XRY, 32 km from Cadiz) takes roughly 2 h 54 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 Cadiz between 1991 and 2020 reached 41.7°C on 1 August 2003; the coldest fell to -0.4°C on 9 January 2009. In August one day in ten tops 35.1°C and about 63% of days pass 30°C; in January one night in ten drops to 4.7°C or below. The wettest single month of the period was January 1996 with 328 mm, against a January average of 59 mm.

Spring and autumn: comfortable days, with a swimming trade-off

March brings 19°C days but still averages 8 rain days, so carry a light waterproof rather than planning entirely around sunshine. April edges up to 20°C, while May feels noticeably warmer at 24°C and offers more sunshine with less frequent rain. Spring's catch is the sea: even in May it averages 18°C, which can feel chilly for a leisurely swim. Autumn reverses that balance. September combines 28°C afternoons with a 22°C sea, making it a good compromise for swimming without peak summer heat. October remains pleasant for walking at 24°C, though rain becomes more frequent. By November, days ease to 19°C and nights to 12°C; bring layers and leave room to change outdoor plans.

Summer: the strongest choice for heat and dry weather

June is a useful middle ground if you want summer warmth without the hottest afternoons: days average 28°C, nights 18°C and the sea 21°C. Rain is infrequent, so outdoor plans are less likely to need rearranging. July and August both average 31°C by day, with sea temperatures of 23°C making swimming more appealing than in spring. July has the most sunshine, while August has slightly warmer nights at 21°C. Pack light clothing and sun protection, and save more energetic walking for earlier or later in the day. These months suit heat lovers; if hot afternoons wear you down, June is the gentler option.

Winter: mild afternoons, cool nights and flexible plans

December and January average 16°C by day, so winter can suit travellers who prefer walking in mild weather to lying beside the sea. The catch comes after sunset: January nights average 8°C, making a warm layer useful rather than optional for comfort. February is slightly milder at 17°C by day and has fewer rain days than December or January, but it is not a beach-weather turning point. Its sea temperature averages 15°C, the coolest of the year. Bring a waterproof and clothes you can layer, and treat sunny afternoons as opportunities rather than something to build every plan around.