Weather in Castellon de la Plana - 7-day forecast, rain, wind

Weather in Castellon de la Plana today and 7-day forecast

Castellon, Valencian Community. Live weather data from Open-Meteo. Updated on page load.

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PM2.5

Climate in Castellon de la Plana

Castellon de la Plana has a coastal Mediterranean climate, with hot, humid summers (average highs of 30 degrees Celsius) and mild winters (lows of 6 degrees). The sea moderates temperature extremes.

Annual rainfall is around 440 mm, concentrated in autumn with cut-off-low episodes that can dump more than 100 mm in a few hours. The coastal rieras, normally dry, can flash-flood quickly.

Easterlies bring humidity and coastal cloud, while westerlies dry the air and raise wildfire risk in the Maestrat. Hydrological drought affects reservoirs like Maria Cristina.

Best time to visit is spring, with the Magdalena festivals in March, and early autumn. Use the hourly forecast, alerts and sea temperature before planning the Planetarium or the grao.

The climate of Castellon de la Plana today: 1991-2020 normals

What the averages say

The mean annual temperature is 18.0 °C. The warmest month is August, averaging 26.2 °C with highs around 30.7 °C; the coldest is January, averaging 11.0 °C with lows of 6.4 °C. The 24 degrees between the mean high of August and the mean low of January are the real measure of how continental this climate is.

Heat, cold and extremes

On average, 56 days a year reach 30 °C or more and 0 bring frost. Neither heat nor cold dominates the year. The highest reading in the series is 40.6 °C, set in July, and the lowest -2.0 °C, in January.

Rain, sun and wind

435 mm fall each year over 77 days with measurable rain, an amount heavily concentrated in the cold half of the year: September is the wettest month with 60 mm and July the driest with 10 mm. The sky is clear on 81 days a year. Mean wind speed is around 9 km/h and mean annual relative humidity 63 %.

Month by month

AEMET climate normals 1991-2020. Castelló - Almassora observatory, 3.7 km from the centre at 43 m above sea level.
Monthly mean	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mean temperature	11.0	11.7	13.8	16.0	19.3	23.1	25.8	26.2	23.2	19.4	14.7	11.8
Mean high	15.6	16.4	18.7	21.0	24.1	27.9	30.4	30.7	27.8	23.9	19.1	16.1
Mean low	6.4	6.9	8.9	11.1	14.4	18.3	21.2	21.6	18.6	15.0	10.2	7.5
Rainfall (mm)	38	26	45	34	36	19	10	20	60	54	53	40
Rain days	6.1	5.2	6.4	8.3	8.1	5.2	3.4	5.3	7.5	7.5	7.3	6.8
Days ≥ 30 °C	0.0	0.0	0.0	0.1	0.8	7.1	19.9	22.2	5.3	0.5	0.0	0.0
Frost days	0.2	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

Where this data comes from

These are the 1991-2020 climate normals published by AEMET, the Spanish state meteorological agency, for the Castelló - Almassora observatory — the nearest official station with a complete series to Castellon de la Plana today. A normal is not a forecast: it describes a thirty-year average, and any given day can depart from it widely. For tomorrow, use the forecast at the top of this page.