Average temperatures in June
Daytime temperatures in Portugal in June usually range from 72°F (22°C) to 86°F (30°C), depending on the region. Compared to spring, it’s noticeably warmer, but without the intense heat that kicks in later in the summer. Nights are cooler, usually between 59°F (15°C) and 68°F (20°C), so you’ll probably want a light layer if you’re out late.
There’s plenty of daylight this time of year—around 14 to 15 hours—so you’ve got lots of time for day trips or slow evenings outside. Rain is uncommon, and when it does show up, it’s usually light. Sea temperatures hover around 66°F (19°C) to 70°F (21°C), which might feel a bit fresh, but many people still swim, especially in the south.
Porto and northern Portugal
In Porto and the north, June stays fairly mild with some variation. Daytime temperatures are usually around 75°F (24°C) to 81°F (27°C), and evenings drop to about 61°F (16°C) to 66°F (19°C). It’s still early in the season here, so occasional rain is more likely—roughly 2 to 3 inches (50–70mm) over the month. The sea’s a bit colder in this region too, usually around 64°F (18°C), so swimming might be less tempting unless you’re used to cooler water. See our guide to how many days you need in Porto.
Lisbon and central Portugal
Lisbon and the surrounding areas usually see dry, warm days in June. Expect daytime highs between 77°F (25°C) and 82°F (28°C) and nighttime temperatures around 63°F (17°C) to 68°F (20°C). Rain doesn’t show up often—maybe a quick shower here or there, but not much more than 1.5 inches (20–40mm) over the month. It’s a good time to explore the city or nearby towns without having to worry much about the weather. The sea near Lisbon stays on the cooler side, around 66°F (19°C), but beachgoers still start heading out as summer gets going. The city stays active well into the evening and it's a great time for a Lisbon city break.
The Algarve and southern Portugal
Southern Portugal, including the Algarve, tends to be warmer and drier in June. You’re looking at daytime temperatures between 79°F (26°C) and 86°F (30°C), with evenings staying warm at around 64°F (18°C) to 72°F (22°C). Rain is rare—usually less than an inch (10–20mm) for the whole month. Sea temperatures are slightly higher here too, around 70°F (21°C).
Madeira
Madeira tends to stay mild and steady in June. Daytime temperatures usually sit between 72°F (22°C) and 77°F (25°C), with nights dropping to around 63°F (17°C) to 68°F (20°C). Rainfall is low—about 0.4 to 0.8 inches (10–20 mm)—and the island stays relatively humid thanks to its location in the Atlantic.