Lisbon · September
Run in the morning.
Comfortable average high of 78°F, dipping to 64°F at night. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
78° / 64°F
Humidity
72%
Rain days
7/mo
Wind
12 mph
What September feels like in Lisbon
Sunrise
07:18
Mid-month average
Sunset
19:44
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Lisbon in September
The kit for September in Lisbon: shorts and a short-sleeve are the standard kit.
September vs the surrounding months
vs August
-4° avg high
+6 rain days
Lisbon in August →
September
78°F avg high
7 rain days
Best: morning
vs October
+5° avg high
-5 rain days
Lisbon in October →
Frequently Asked Questions
What is the best time of day to run in Lisbon in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Lisbon in September?+
Average high 78°F, average low 64°F.
How does September compare to surrounding months in Lisbon?+
Compared to August (avg high 82°F), September is cooler. Compared to October (avg high 73°F), September is warmer.
Does it rain often in Lisbon in September?+
Expect about 7 measurable rain days in September, on average.