Sintra weather in September
Sintra in September averages 22°C (72°F), 36 mm of rain and 8.5 hours of sun a day.
Of the twelve months in Sintra, September is the third warmest, the fourth driest and the fifth sunniest.
- Average temp
- 22°C (72°F)
18–26°C · 64–79°F
- Rainfall
- 36 mm
Not much rain
- Sunshine
- 8.5 h
hours per day
What is Sintra like in September?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Rain is usually light.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Sintra in September?
High-factor sun cream
With 8.5 hours of sun a day, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
A layer for the evening
Evenings cool off noticeably once the sun is down.
Comfortable walking shoes you can rinse
Dry warm weather is walking weather, and dust gets into everything.
September compared with August and October
September in Sintra is 1.6°C cooler than August and 29 mm wetter than it, which averages 24°C (74°F).
September in Sintra is 3°C warmer than October and 72 mm drier than it, which averages 19°C (66°F).
Daylight in Sintra in September
On 15 September the sun is up for 12 hours 26 minutes in Sintra, rising about 07:19 and setting about 19:45 local time.
September ends 1 hour 12 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 27 minutes short of June, the longest-lit month here.
Where to stay in Sintra
Dates are a starting point for September.
Travel guides for Sintra
What to read before you book.
Sintra 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 | 12°C / 53°F | 104 mm |
| February | 13°C / 55°F | 73 mm |
| March | 15°C / 59°F | 72 mm |
| April | 16°C / 61°F | 67 mm |
| May | 19°C / 65°F | 53 mm |
| June | 21°C / 71°F | 13 mm |
| July | 23°C / 73°F | 3 mm |
| August | 24°C / 74°F | 7 mm |
| September | 22°C / 72°F | 36 mm |
| October | 19°C / 66°F | 108 mm |
| November | 15°C / 59°F | 121 mm |
| December | 13°C / 55°F | 102 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Sintra in September
September climate averages for Sintra, 1991–2020.
Sintra averages 22°C (72°F) in September, ranging from about 18°C (64°F) at night to 26°C (79°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. September sees only about 36 mm, so rain is unlikely to affect your plans.
Yes. September averages 22°C (72°F) against 19°C (66°F) in October — 3°C warmer.
September is 1.6°C cooler than August, and 29 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 8.5 hours of sun a day on the 1991–2020 average — among the brighter months anywhere.
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 26 minutes of daylight in mid-September, against 14 hours 53 minutes in June and 9 hours 28 minutes in December.
On 15 September, sunrise is about 07:19 and sunset about 19:45 local time. Both shift across the month — the month ends 1 hour 12 minutes shorter than it starts.
