Castellón de la Plana weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: March – November
What is the weather like in Castellón de la Plana in September?
In September, Castellón de la Plana is warm: daytime highs average 26 °C, and nights cool down to about 19 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 59 mm. All in all, September is an excellent month for a holiday in Castellón de la Plana.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 89 | 92 | 90 |
| Day | 29° | 26° | 23° |
| Night | 22° | 19° | 15° |
| Sea | 27° | 25° | 22° |
| Sun | 10 h | 8 h | 7 h |
| Rain days | 4 | 7 | 6 |
More details for September
- Daylight
- 12 h 31 min07:40 – 20:11
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 11 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 44 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+2Europe/Madrid
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %90 %
- Few rainy daysweight 30 %80 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Castellón de la Plana in September: quick answers
Is Castellón de la Plana hot in September?
Warm rather than hot: in September, daytime highs in Castellón de la Plana average 26 °C and nights cool to about 19 °C.
Can you swim in Castellón de la Plana in September?
Yes. In September the sea averages 25.1 °C – pleasant for swimming.
Does it rain much in Castellón de la Plana in September?
Rain falls on about 7 days, adding up to 59 mm.
Castellón de la Plana month by month
The whole year in Castellón de la PlanaAll destinations: SpainWhere to go in SeptemberSea temperature in September
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