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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the MarketUK weather desk. Data from national met services via Open-Meteo.
Daytime highs in the Algarve for May typically range from 21°C to 25°C, with sea temperatures around 17°C–18°C. The live forecast above shows the coming week’s conditions. May offers warm, sunny days with low rainfall, making it one of the best months to visit the region.
What is the average temperature in the Algarve in May?
Daily highs average 22°C, peaking near 25°C by late month, while overnight lows sit around 14°C–16°C. In plain English, you’ll need a light jacket or sweater for evenings but can expect comfortable warmth during the day. For those planning ahead, the weather in Algarve in June shifts a few degrees higher, with highs typically reaching 26°C–28°C.
How much does it rain in Algarve in May?
May is a dry month. The Algarve sees only 20–30mm of rain spread across 4–6 rainy days on average. Most days are bright and clear, especially along the coast. If you’re visiting at the end of May, conditions remain stable and sunny, so algarve weather end of may is often ideal for beach trips and outdoor activities.
Is May a good time to visit the Algarve?
Yes. Warm, sunny days and low rainfall mean fewer crowds than peak summer. Sea temperatures are still cool but swimmable for the brave. It’s an excellent month for hiking, sightseeing and relaxing on the beach.
What should I pack for the Algarve in May?
Light layers for daytime, a jacket or jumper for evenings, and sun protection. A light raincoat or umbrella is rarely needed but can be handy. Sea temperatures are around 17°C–18°C, so a wetsuit helps if you plan to swim a lot.
How does the weather in May compare to June?
May is slightly cooler and drier than June. The weather Algarve May June shows a clear warming trend: May averages 22°C–25°C, while June sees 25°C–28°C. Rainfall is similarly low in both months, but June has longer daylight hours and warmer sea water.
Sources
For UK comparisons, check the UK weather hub or the 10-day forecast for the UK. Temperatures in Portugal in May in celsius are typically in the low to mid-20s, making it a reliable warm destination before the summer heat builds.