Weather in Santiago de Compostela by month: what to expect

The weather in Сантьяго-де-Компостела is mild but changeable, shaped by its location in northwestern Spain. Winters are cool and wet, while summers bring warmer, drier days. The city’s climate is influenced by Atlantic winds, making it less predictable than other Spanish regions.

From November to March, Сантьяго-де-Компостела sees frequent rain, with January and December being the wettest months. Spring and autumn are transitional, offering a mix of sunshine and showers. The driest period runs from June to September, when temperatures rise and rainfall drops significantly.

Travelers to Сантьяго-де-Компостела should prepare for variability, especially outside summer. Even in July or August, a light jacket may be useful for cooler evenings.

Temperatures in Сантьяго-де-Компостела rarely reach extremes, with averages ranging from +8.1 °C in January to +19.4 °C in August. The coldest nights in winter can dip to +4.4 °C, while summer afternoons often warm to +25.2 °C in July.

Spring and autumn bring moderate warmth. By May, daytime highs reach +20.4 °C, and even in October, temperatures hover around +19.4 °C. The transition between seasons is gradual, with no sharp jumps in temperature.

Even in the warmest months, evenings in Сантьяго-де-Компостела can feel cool, especially in June or September, when lows drop to +12.1 °C and +12.5 °C respectively. Layered clothing works well year-round.

Rain is a defining feature of Сантьяго-де-Компостела’s climate, with annual precipitation totaling around 1,555 mm. The wettest months—January, November, and December—see over 200 mm each, while July is the driest with just 21.3 mm.

From October to March, rain is frequent, often lasting several days. April and May bring lighter showers, while June to September offer the most reliable dry spells. Even in summer, brief rain isn’t uncommon.

The city’s lush greenery thrives on this rainfall, but travelers should pack waterproof gear if visiting Сантьяго-де-Компостела between October and April. A compact umbrella is useful even in May or September, when showers can surprise.

For a trip to Сантьяго-де-Компостела in winter, pack warm layers and waterproof footwear. Temperatures in January or February average +8.1 °C, but dampness can make it feel cooler. A windproof jacket is essential for Atlantic breezes.

Summer visitors can opt for lighter clothing, but evenings in July or August may require a light sweater. A mix of short- and long-sleeve shirts works well for June or September, when days are warm but nights cool.

Year-round, a waterproof layer is wise in Сантьяго-де-Компостела. Even in May, when rain decreases, showers can occur. Comfortable walking shoes are a must, as the city’s historic center is best explored on foot.