Climate Overview
The climate in La Roca del Vallès is temperate. The average annual temperature is 15°C and approximately 796mm of precipitation falls per year. April is the wettest month, receiving around 121mm of rainfall. La Roca del Vallès is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are December, February, March, when temperatures can drop to 3°C.
Temperature
Temperatures in La Roca del Vallès vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 23°C. December is the coolest month, with minimum temperatures around 3°C and an average of 8°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.
Precipitation
La Roca del Vallès is a relatively dry area, receiving approximately 796mm of precipitation annually, which averages out to around 66mm per month. The wettest month is April, averaging 121mm of rainfall. October and November also tend to see above-average precipitation. The driest month is January, with just 16mm. That's 105mm less than April, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
La Roca del Vallès is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in La Roca del Vallès, which began on June 21, 2026. La Roca del Vallès is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 29°C, while the coldest stretch bottoms out in December near 3°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 4 to 20°C. Precipitation is moderate at around 254mm for the season, averaging 85mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 29°C. Rainfall is relatively light, with around 147mm over the season and a monthly average of 49mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 7 to 26°C. Precipitation is moderate at around 287mm for the season, averaging 96mm per month. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 3 to 14°C. Rainfall is relatively light, with around 108mm over the season and a monthly average of 36mm. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit La Roca del Vallès is during May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 60mm per month. By contrast, December can be quite cold with temperatures dropping to 3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for La Roca del Vallès based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
