The best time to visit Algarve

Portugal's southern coast: limestone sea cliffs, sheltered coves and the most reliable sunshine in mainland Europe. Daytime highs in the Algarve run from about 15 °C in January to 28 °C in August, an annual range of roughly 13 °C.

Measured against a beach trip, the conditions hold up June to October. June is the most consistent single month: highs near 26 °C, nights around 17 °C, and roughly 9 mm of rain across the month.

What rules months out here is temperature and rainfall, not any composite judgement. Rainfall is sharply seasonal: November averages 74 mm against 0 mm in July, so the wet season is the real planning constraint rather than heat or cold. January is the weakest month on these criteria.

Visitor numbers follow their own curve. Recorded overnight stays peak in the two weeks from 13 August at about 1.9 times an average fortnight for this region, against 0.4 times in January. On the separate question of how much tourism the area carries all year, Loule sits in the 8th densest of 294 European regions, at 47.5 overnight stays per resident a year.

May sits just outside the window, with part of the month working and part not. These are usually the interesting weeks: conditions are close to the peak-season answer while prices and crowds are not. On recorded overnight stays that holds: May runs about 39% below the August peak. The map lets you check them fortnight by fortnight rather than trusting a monthly average.

What the Algarve is known for

• Praia da Marinha and the Benagil sea caves are the emblem of the limestone coast, reached by boat or kayak
• Faro's old town sits inside the Ria Formosa lagoon, a barrier-island wetland and major bird reserve
• The western Costa Vicentina is a protected natural park with cold Atlantic surf and almost no development
• Portugal's oldest inland spa towns and the Monchique hills sit an hour behind the beaches

Month by month

Ticked rows are months where every hard requirement for a beach trip is met across at least half the month.

Nearby regions

• Andalusia
• Madeira
• Canary Islands

Figures are 30-year climatology sampled at Faro, Lagos, Loule, Tavira and Portimao, averaged across those locations, from ERA5-Land reanalysis fitted with a harmonic seasonal cycle and a trend term, evaluated for 2026. Sampling named towns rather than averaging the whole region avoids blending valley and mountain conditions into a figure true of neither. Cells are about 0.08° wide, from ERA5-Land's 0.1° grid, which is itself driven by a 0.25° (~28 km) atmospheric reanalysis — so individual valleys, sheltered bays and single summits are not resolved. In steep terrain read these as conditions for the wider area rather than for one village. They describe typical conditions, not a forecast. Read how the climatology is built.