Month-by-month travel weather
Porto September weather
Porto, Portugal · September
Less heat than peak summer; rain can start increasing
September often feels like a sweet spot: still warm, but easier for long walks and hills than July/August.
Rain can start to increase later in the month. Evenings can cool with breeze; a thin layer helps.
September averages at a glance
Average low
around 15–16°C
Average high
around 23–25°C
Average precipitation
around 45–80 mm
Precip days
about 6–10 days
What to wear in September in Porto
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Light clothing + optional thin evening layer.
- • Comfortable shoes for hills.
- • Optional umbrella for intermittent rain.
- • Optional sunglasses.
Travel tips for visiting Porto in September
- • Plan river walks for late afternoon when comfort is best.
- • Use indoor anchors if rain bursts interrupt plans.
- • Breeze near the coast can cool evenings quickly.
September weather in Porto — FAQ
Q. Is September rainy?
A. Often a bit more variable; rain can return intermittently.
Q. Do you need a jacket at night?
A. Often helpful, especially by the river in breeze.
Explore Porto
These pages are connected so you can compare conditions and decide for yourself.