Climate Overview
The climate in Castelló de la Plana is temperate. The average annual temperature is 18°C and approximately 453mm of precipitation falls per year. December is the wettest month, receiving around 120mm of rainfall. Castelló de la Plana 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 9°C.
Temperature
Castelló de la Plana sees moderate temperature variation throughout the year, ranging from 9°C to 29°C. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 25°C. December is the coolest month, with minimum temperatures around 9°C and an average of 12°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.
Precipitation
Castelló de la Plana is a relatively dry area, receiving approximately 453mm of precipitation annually, which averages out to around 38mm per month. The wettest month is December, averaging 120mm of rainfall. November and October also tend to see above-average precipitation. The driest month is July, with just 2mm. That's 118mm less than December, 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
Castelló de la Plana is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in Castelló de la Plana, which began on June 21, 2026. Castelló de la Plana 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 9°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 9 to 22°C. Rainfall is relatively light, with around 111mm over the season and a monthly average of 37mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 19 to 29°C. Precipitation is minimal, with only around 26mm for the entire season. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 11 to 27°C. Precipitation is moderate at around 179mm for the season, averaging 60mm per month. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 9 to 17°C. Rainfall is relatively light, with around 137mm over the season and a monthly average of 46mm. Winds are generally light, averaging 3km/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 Castelló de la Plana is during April, May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 32mm per month. By contrast, July can be uncomfortably hot with highs reaching 29°C, while December is the coldest period with lows dropping to 9°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 Castelló de la Plana 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.
