Castellón faces a rare spell of unstable weather, with the Agencia Estatal de Meteorología (Aemet) forecasting rain somewhere in the province each day from Monday through Saturday. The outlook breaks from the recent dry spell: the most persistent showers are expected inland, while conditions will be more variable along the coast. The pattern follows a weekend of intense storms in Els Ports, where Morella recorded 25 litres per square metre in a short period, along with hail that blanketed streets and rooftops.
Saturday’s storm was particularly severe in the northern interior. Provisional Avamet data showed nearly identical rainfall totals of 24.4 litres per square metre in la Mata, Villores, Olocau del Rey and Morella. Forcall and la Todolella also recorded impressive precipitation. The event coincided with an orange alert from Aemet and disrupted local festivities, including Morella’s traditional paella contest. Aemet’s station-observation service separately publishes measured variables such as precipitation, along with daily summaries for the latest seven days.
Sunday brought a brief respite: skies were mostly clear, with only isolated afternoon showers in the northern interior. Temperatures remained stable across the province, and the coast enjoyed more sunshine. Conditions are set to shift quickly as the week progresses.
Monday is expected to be the most settled day, with widespread sunshine and only a slight chance of weak, isolated afternoon showers in the northern interior. By Tuesday, instability will increase, with rain symbols appearing across much of the province, from the northern interior to central and southern areas. Some showers may reach the coast, though rainfall is likely to be light and scattered.
The risk of storms rises midweek. On Wednesday, clearer morning conditions will give way to increasing cloud cover and showers, especially inland. Thunderstorm symbols appear in the western part of the province. The most active weather is expected to stay away from the coast, but could affect basic and northern areas.
Thursday’s forecast shows more widespread cloud cover and precipitation, again concentrated inland. Along the coast, clouds will alternate with clear spells, and rainfall will be less consistent. By Friday, the risk of thunderstorms will be more pronounced, particularly in the west and northwest. The coast is expected to be less affected, though not entirely dry.
The unsettled pattern is set to continue through Saturday, with Aemet forecasting more rain, especially inland. Coastal areas will see variable skies, with a higher chance of precipitation in the north. Compared with Friday, Saturday’s maps show more widespread rain and overcast conditions, while thunderstorm activity appears to ease. Aemet’s Meteoalerta system issues weather warnings by territory and hazard, including heavy precipitation and thunderstorms, over an operational horizon of up to 72 hours. It updates warning information as conditions and forecasts change. A multi-day rain outlook is distinct from an uninterrupted alert: formal warning status applies to specific periods and hazards.
This extended spell of instability in Castellón stands out during a typically dry August. Similar weather shifts have been observed elsewhere, including Bizkaia, where rain and cooler temperatures marked the start of August. In Castellón, the coming days may test local infrastructure and affect outdoor events, especially in rural and mountainous areas where rainfall is expected to be heaviest.
Castellón has a generally Mediterranean climate, with hot, dry summers and mild, wetter winters. Its interior, particularly areas such as Els Ports and Alto Maestrazgo, is more prone to summer storms because of its elevation and proximity to mountain ranges. Farmers and event organizers closely follow Aemet’s forecasts, as sudden downpours can affect agriculture and local festivities. Residents are advised to monitor updates: the timing and intensity of showers can vary significantly from one municipality to another.
