Mini Heatwave Ends on the Costa Blanca as Yellow Alert Issued for Storms and Strong Winds

The Warm Spell Is Over

The Costa Blanca's recent run of warm, sunny weather is coming to an abrupt end. A low pressure system developing in the Alboran Sea is tracking toward the region, bringing with it strong winds, heavy rain and the risk of thunderstorms — and authorities have issued a yellow weather warning for the southern coastal areas.

The change is being driven by an anticyclone positioned between the British Isles and Scandinavia, which is pushing storm systems southward into Spain's eastern coast. Temperatures that reached a pleasant 25°C earlier in the week will fall to around 20°C by Saturday.

Day-by-Day Forecast

Friday

• Alicante City: 70% probability of rain in the afternoon, rising to 80% by Saturday
• Marina Alta: 95% rain probability — the highest risk area in the province
• Wind: Gusts up to 60km/h along the southern Costa Blanca coast — yellow warning in effect
• Sea conditions: Wave heights between two and three metres offshore
• Strong northerly winds in Marina Alta, with temperatures maxing at just 21°C

Saturday

• Unstable conditions continuing across the province
• Alicante City: 80% rain probability
• Vega Baja: 75% probability of storms
• Temperatures dropping roughly five degrees from earlier in the week
• Alicante City high of approximately 20°C

Yellow Warning: What It Means

A yellow weather warning is the lowest level of alert issued by Spain's meteorological agency AEMET, but it should not be dismissed. It signals conditions that are potentially dangerous — particularly for those in exposed coastal locations, at sea, or planning activities that depend on calm weather.

With gusts forecast to reach 60km/h and wave heights of two to three metres, small boat operators should stay in harbour, and anyone planning beach or watersport activities on Friday should postpone. Coastal roads may also be affected by spray and debris in the most exposed stretches.

Areas Most Affected

• Marina Alta (Dénia, Jávea, Calpe area) — highest rain probability at 95% Friday, strong northerly winds
• Southern Costa Blanca coast — yellow warning zone for wind
• Vega Baja (Torrevieja, Orihuela Costa area) — 75% storm probability Saturday
• Alicante City — temperatures falling from 25°C to around 20°C, significant rain Friday-Saturday

When Will It Improve?

The unsettled pattern is expected to ease through the weekend as the low pressure system moves through. More settled conditions are anticipated early next week, though the warm temperatures of the earlier mini heatwave are unlikely to return immediately.

For expats and residents along the Costa Blanca, the message is simple: make the most of Thursday if you have outdoor plans, be prepared for a wet and blustery Friday and Saturday, and keep an eye on AEMET updates in case warning levels are upgraded.

This article is based on reporting from The Olive Press, published April 24, 2026. Weather conditions are subject to change — check AEMET for the latest official warnings.