Las Palmas has one of the most consistent climates of any European city. The average temperature hovers around 22°C year-round, with the ocean keeping both summer heat and winter cold in check. There is no bad time to visit, which also means there is no peak season in the usual sense — the city is always busy because it is a city, not a resort.
January to March is the best period for visitors from northern Europe. The weather is warm and sunny while the rest of the continent is grey and cold, and flights and accommodation are cheaper than high summer. February brings the city's Carnival, which is among the biggest in Spain — second to Tenerife's in scale but arguably more fun, being a local celebration rather than a spectacle organised around visitors. The main parades run through the centre and Playa de Las Canteras. Plan accommodation well in advance.
June to September sees the trade winds push cloud in from the north, which can mean overcast mornings that burn off by afternoon. Temperatures remain pleasant — rarely above 26°C — and the beach fills up. The city feels fully alive in August when Canarian families take their summer holidays locally.
October to December is warm and quiet. The city returns to normal after summer, and the light is good. This is a comfortable time to visit if you want the place to yourself.
Rain is rare in Las Palmas year-round; the city sits in a rain shadow and the wet season, such as it is, falls in winter with occasional brief showers.