Castellón de la Plana weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: March – November
What is the weather like in Castellón de la Plana in May?
In May, Castellón de la Plana is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 18.5 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 33 mm. All in all, May is an excellent month for a holiday in Castellón de la Plana.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 21 min06:46 – 21:07
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+2Europe/Madrid
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %93 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Castellón de la Plana in May: quick answers
Is Castellón de la Plana hot in May?
Warm rather than hot: in May, daytime highs in Castellón de la Plana average 22 °C and nights cool to about 14 °C.
Can you swim in Castellón de la Plana in May?
Only if you don't mind cold water: in May the sea averages just 18.5 °C. Comfortable swimming is possible from June to October.
Does it rain much in Castellón de la Plana in May?
Rain falls on about 5 days, adding up to 33 mm.
Castellón de la Plana month by month
The whole year in Castellón de la PlanaAll destinations: SpainWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences