Early autumn · Weather & things to do
Lisbon in September
Little changes in Lisbon from August: highs stay near 72°F (22°C), lows near 64°F (18°C), and about 1.0 in (25 mm) of rain falls.
At 86/100 for comfort (6th of 12), it's one of the best months to visit.
- Avg high
- 72°F (22°C)
- Avg low
- 64°F (18°C)
- Rain
- 1.0 in (25 mm)
- Humidity
- 81%
- Cloud cover
- 48%
- Daylight
- ~12 h 14 min
- Comfort score
- 86/100 · Great
What September feels like
Highs settle around 72°F (22°C), warm enough for short sleeves most of the day.
Nights cool to an average low of 64°F (18°C).
It's one of the drier stretches, with only about 1.0 in (25 mm) of rain.
Plan around September
September is one of Lisbon's best months on the climate data.
- Last warm month for a while: October highs fall to 69°F.
- Last dry month before the rain picks up: October brings 3.1 in (79 mm).
- Last of the best-scoring months: by October, the score drops to 78/100.
- Comfort holds steady from August (88 → 86/100).
- Our Portugal by Rail route recommends Apr – Jun, so September falls outside its suggested window.
What to pack for September
- Light, breathable clothes72°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Lisbon in September
September is good outdoor weather here, so these picks lean toward the open air.
Castelo de São Jorge
Moorish castle walls above Alfama with the widest views of the city.
Belém Tower
16th-century fortified tower on the Tagus, built to guard the harbor.
Time Out Market Lisboa
Food hall with stalls from well-known Lisbon chefs.
A Ginjinha
Tiny bar pouring cherry liqueur since 1840.
Pastéis de Belém
Bakery making custard tarts since 1837.
Nearby in September
- Coimbra in September~109 mi · highs 86°F, 1.6 in rain · 8°C (15°F) warmer by day, wetter
- Porto in September~170 mi · highs 74°F, 1.9 in rain · 1°C (2°F) warmer by day, wetter
- Seville in September~195 mi · highs 90°F, 0.9 in rain · 10°C (19°F) warmer by day, about as wet
- Córdoba in September~243 mi · highs 90°F, 1.1 in rain · 10°C (18°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Lisbon in September: quick answers
Is September a good time to visit Lisbon?
Yes. On the climate data it's one of the best months, scoring 86/100. Expect highs of 72°F (22°C) and 1.0 in (25 mm) of rain. Our Portugal by Rail route recommends Apr – Jun, so September is outside its suggested window.
How hot is Lisbon in September?
Average highs are 72°F (22°C) and average lows 64°F (18°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Lisbon in September?
Not much: about 1.0 in (25 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 21.3 in (541 mm).
What should I pack for Lisbon in September?
Bring light, breathable clothes (72°F afternoons), sunscreen, sunglasses and a hat (strong sun this month) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Lisbon in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.