Monthly Climate
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Best time to visit Castelló de la Plana

May is the best time to visit Castelló de la Plana for general sightseeing, with average highs of 22 °C and about 5 wet days. The comfortable season runs roughly April to June. The sea stays above 20 °C from June to October.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking May comfort 96/100
A beach holiday July sea 25 °C
The least cloud July 23 % average cloud cover
The least rain July 8 mm
Warmth August 28 °C
Cooler weather January 14 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 May 96 22 °C 5 63
2 October 95 22 °C 6 76
3 June 91 25 °C 3 92
4 April 89 19 °C 6 41
5 September 88 26 °C 6 92
6 November 87 18 °C 5 50
7 March 81 17 °C 5 30
8 July 80 28 °C 1 100
9 August 78 28 °C 3 98
10 December 74 15 °C 5 30
11 February 73 15 °C 4 25
12 January 71 14 °C 5 22

For a beach holiday

July scores highest, with a sea temperature of 25 °C and air temperatures around 28 °C. The sea is above 20 °C from June to October.

Month Sea Air Sunshine Beach score
January 14 °C 14 °C 44 % 22
February 14 °C 15 °C 41 % 25
March 14 °C 17 °C 43 % 30
April 16 °C 19 °C 45 % 41
May 18 °C 22 °C 46 % 63
June 22 °C 25 °C 34 % 92
July 25 °C 28 °C 23 % 100
August 26 °C 28 °C 32 % 98
September 25 °C 26 °C 42 % 92
October 22 °C 22 °C 46 % 76
November 19 °C 18 °C 45 % 50
December 16 °C 15 °C 46 % 30

When to think twice

January scores lowest with about 5 wet days and highs near 14 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 14.1 °C 37 mm 44 %
February 14.5 °C 28 mm 41 %
March 16.7 °C 34 mm 43 %
April 18.6 °C 36 mm 45 %
May 21.6 °C 31 mm 46 %
June 25.4 °C 18 mm 34 %
July 28.0 °C 8 mm 23 %
August 28.4 °C 19 mm 32 %
September 25.5 °C 47 mm 42 %
October 22.0 °C 50 mm 46 %
November 17.6 °C 43 mm 45 %
December 14.7 °C 35 mm 46 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.