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Sintra Weather in October
In Sintra, October brings pleasant daytime temperatures around 21°C (70°F), with nights cooling to 16°C (61°F). Expect quite a bit of rainfall this month.
Rainfall in Sintra in October
Typically around 11 days of rainfall are expected, averaging 85 mm (3.3 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Sintra in October
Sintra in October has excellent weather. Days reach 21°C (70°F) and nights cool to 16°C (61°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Sintra in October
Expect a lot of sunshine this month, with about 233 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, June, July, August, September and October typically offer the best circumstances for Sintra.
Sintra Temperature in October
Min Temperature
16°C (61°F)
Max Temperature
21°C (70°F)
Chance of Rain
36%
Precipitation
85 mm (3.3 in)
Rainy days
11 days
Humidity
76% *
Sunshine
233 hours *
Percentage Sunshine
68% *
* Data from: Cascais, Portugal (11 KM, 7 Miles).
Sintra Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sintra - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sintra typically drop from around 24°C (75°F) at the start of October to approximately 20°C (68°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 16°C (61°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather records for Sintra in October
Browse day-by-day weather records for Sintra spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sintra historical weather extremes in October
According to our 49 years of weather records for Sintra, the following extremes were recorded between 1976 and 2025.
- The warmest day in October was on October 18, 1995, with a maximum of 36°C (97°F).
- Sintra experienced its chilliest October day on October 31, 2018, reaching only 11°C (52°F).
- The lowest overnight temperature recorded in October was 5°C (41°F) (October 24, 2003).
Best Places in Portugal in October
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sintra in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Sintra in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Sintra 3-Day Forecast
More climate data for Sintra
Temperature Rainfall Sunshine Humidity
See the full Sintra climate overview or explore weather in Portugal.
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