A thunderstorm swept across the Algarve on Sunday 18 October, tracking from the northeast of the region towards the west. Portugal's weather service, IPMA, flagged heavy showers, thunderstorms and hail, along with strong wind gusts, and urged residents and drivers to take care, especially where sudden downpours hit.
The unsettled spell didn't end there. Forecasters at Meteored, drawing on European Centre for Medium-Range Weather Forecasts data, expected more light rain in the Algarve on Monday 19 October between midday and 6pm, with precipitation probabilities reaching around 60% in some spots during the afternoon.
From there, the wet weather was set to move north. Rain was forecast to reach Portugal's northern coast late on Tuesday 20 October, then spread to central coastal areas overnight. Tuesday and Wednesday looked largely cloudy across the mainland, with temperatures around or slightly below what you'd normally expect for mid-autumn.
The Algarve, however, kept its reputation as the mild corner of the country. Faro was tipped to reach about 17°C on Monday afternoon — hardly beach weather, but a long way from the chill further north.
Why it matters: the Algarve is a popular shoulder-season pick for golfers, walkers and anyone chasing winter sun without the summer crowds. Storms like this are typical for October, when Atlantic systems start pushing across Iberia. If you're travelling in the region this week, pack a waterproof layer, expect grey spells between bright moments, and build some flexibility into any boat trips, beach days or coastal hikes — these can be knocked out for a day or two by rough seas and heavy rain.
Drivers should be particularly alert on the region's roads, as sudden downpours can cause standing water and reduced visibility. For those staying put, it's a good excuse for the indoor side of the Algarve: town museums, long lunches and the region's famously good-value autumn restaurant deals.
The bigger picture is reassuring. Once this system clears east into Spain, the pattern typically returns to the mix of sunny days and cooler nights that makes southern Portugal so appealing from late October onwards. Sea temperatures are still relatively warm after summer, so swimming is often still possible between the fronts.
