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Castelló de la Plana, Spain climate

BSk Cold semi-arid

Castelló de la Plana has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is August with an average daily high near 87°F, while the coldest is January averaging around 44°F at night. Precipitation totals about 17 inches a year and is strongly seasonal — September alone averages 2.3 inches while July barely receives 0.40 inches.

☀️ Summers

Hot

Highs near 87°F in August.

About 16 days a year above 90 °F

❄️ Winters

Cool

Lows near 44°F in January.

🌧️ Rain

Fairly dry

About 17 in of rain a year.

Wettest in September

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+1.7 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Castelló de la Plana climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	60	62	66	70	75	82	87	87	82	75	66	61
Avg temp (°F)	52	53	57	61	67	74	78	79	74	67	58	53
Avg low (°F)	44	44	48	52	58	65	70	71	66	59	50	45
Precipitation (in)	1.5	1.0	1.8	1.3	1.4	0.8	0.4	0.8	2.3	2.1	2.1	1.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	60	62	66	70	75	82
Avg temp (°F)	52	53	57	61	67	74
Avg low (°F)	44	44	48	52	58	65
Precipitation (in)	1.5	1.0	1.8	1.3	1.4	0.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	87	87	82	75	66	61
Avg temp (°F)	78	79	74	67	58	53
Avg low (°F)	70	71	66	59	50	45
Precipitation (in)	0.4	0.8	2.3	2.1	2.1	1.6

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	5	4	5	7	7	4	3	5	6	6	6	6
Days with high ≥ 90°F (days)	—	—	—	—	0.2	2	6	7	0.9	0.0	—	—
Days with low ≤ 32°F (days)	0.3	0.1	—	—	—	—	—	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	5	4	5	7	7	4
Days with high ≥ 90°F (days)	—	—	—	—	0.2	2
Days with low ≤ 32°F (days)	0.3	0.1	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	3	5	6	6	6	6
Days with high ≥ 90°F (days)	6	7	0.9	0.0	—	—
Days with low ≤ 32°F (days)	—	—	—	—	—	—

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	54	52	53	52	51	39	30	36	48	53	56	58
Clear days (≤ 30% cloud)	9	8	9	9	9	13	18	15	10	8	7	7
Partly cloudy days (30–70%)	11	11	11	12	12	11	10	12	12	12	11	11
Cloudy days (≥ 70%)	12	9	11	10	10	6	3	4	8	10	12	13
Relative humidity (%)	72	69	68	67	66	64	63	65	68	70	70	72
Wind speed (mph)	7.9	7.9	7.6	7.3	6.5	6.1	6.2	6.2	6.6	6.9	7.9	7.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	54	52	53	52	51	39
Clear days (≤ 30% cloud)	9	8	9	9	9	13
Partly cloudy days (30–70%)	11	11	11	12	12	11
Cloudy days (≥ 70%)	12	9	11	10	10	6
Relative humidity (%)	72	69	68	67	66	64
Wind speed (mph)	7.9	7.9	7.6	7.3	6.5	6.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	30	36	48	53	56	58
Clear days (≤ 30% cloud)	18	15	10	8	7	7
Partly cloudy days (30–70%)	10	12	12	12	11	11
Cloudy days (≥ 70%)	3	4	8	10	12	13
Relative humidity (%)	63	65	68	70	70	72
Wind speed (mph)	6.2	6.2	6.6	6.9	7.9	7.7

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Castellon, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →