Temperature
Warm by day, mild at night.
Porto is most comfortable in early autumn. Summers are warm and winters are mild. The wettest months are roughly October to January. Humidity is usually low.

Warm by day, mild at night.
One of the driest months, with very little rain.
Plenty of sun this month.
Warm days, with some hot afternoons and occasional humid spells.
In August, afternoons feel about 78° and nights feel near 66°.
Predominantly clear skies.
August late afternoons are around 79°F, easing to about 74°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Porto with Barcelona.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology