Porto weather in September
Porto in September averages 19°C (67°F), 75 mm of rain and 7.6 hours of sun a day.
Of the twelve months in Porto, September is the third warmest, the fourth driest and the sixth sunniest.
- Average temp
- 19°C (67°F)
15–24°C · 59–74°F
- Rainfall
- 75 mm
Showers likely
- Sunshine
- 7.6 h
hours per day
- Wind
- 11 km/h
What is Porto like in September?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Porto in September?
A light rain jacket
About 75 mm falls this month — showers rather than washouts.
A layer for the evening
Evenings cool off noticeably once the sun is down.
September compared with August and October
September in Porto is 0.7°C cooler than August and 42 mm wetter than it, which averages 20°C (68°F).
September in Porto is 2.1°C warmer than October and 83 mm drier than it, which averages 17°C (63°F).
Daylight in Porto in September
On 15 September the sun is up for 12 hours 28 minutes in Porto, rising about 07:15 and setting about 19:43 local time.
September ends 1 hour 18 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 2 hours 40 minutes short of June, the longest-lit month here.
Where to stay in Porto
Dates are a starting point for September.
Travel guides for Porto
What to read before you book.
Porto weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 10°C / 50°F | 151 mm |
| February | 11°C / 51°F | 97 mm |
| March | 13°C / 56°F | 104 mm |
| April | 14°C / 58°F | 99 mm |
| May | 16°C / 61°F | 89 mm |
| June | 18°C / 64°F | 35 mm |
| July | 20°C / 68°F | 22 mm |
| August | 20°C / 68°F | 33 mm |
| September | 19°C / 67°F | 75 mm |
| October | 17°C / 63°F | 158 mm |
| November | 13°C / 56°F | 181 mm |
| December | 11°C / 52°F | 173 mm |
Check another month
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FAQs about Porto in September
September climate averages for Porto, 1991–2020.
Porto averages 19°C (67°F) in September, ranging from about 15°C (59°F) at night to 24°C (74°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 75 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 19°C (67°F) against 17°C (63°F) in October — 2.1°C warmer.
September is 0.7°C cooler than August, and 42 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 7.6 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 28 minutes of daylight in mid-September, against 15 hours 8 minutes in June and 9 hours 14 minutes in December.
On 15 September, sunrise is about 07:15 and sunset about 19:43 local time. Both shift across the month — the month ends 1 hour 18 minutes shorter than it starts.
