Sintra in August
In August, Sintra averages 25°C (77°F) during the day and 17°C (63°F) at night, with only about 1 rainy day.
Peak seasonConditions are comfortable for sightseeing without being sweltering. Skies are generally dry and clear.
August is a great month to visit Sintra: pleasant temperatures and relatively few wet days.
How August compares to the rest of the year in Sintra
August is one of the warmest months in Sintra (2nd of 12) and one of the driest months (12th of 12). Daytime temperature runs 5°C above the annual average (20°C). August runs roughly the same as July (25°C) and cools 1°C in September (24°C).
August sunrise & sunset in Sintra
Times shown for Sintra local time (Europe/Lisbon), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Sintra — August
Golden-hour and blue-hour windows for the 15th of August, in Sintra's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Sintra in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Peak season) and Sintra's popularity.
Crowds & pricing — August in Sintra
Sintra is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in Sintra
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sintra in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 15°C / 59°F | 8°C / 46°F | 140 mm | 12 | 0 |
| February | 16°C / 61°F | 9°C / 48°F | 115 mm | 11 | 0 |
| March | 18°C / 64°F | 10°C / 50°F | 90 mm | 11 | 0 |
| April | 18°C / 64°F | 11°C / 52°F | 90 mm | 11 | 0 |
| May | 20°C / 68°F | 13°C / 55°F | 75 mm | 10 | 0 |
| June | 23°C / 73°F | 15°C / 59°F | 30 mm | 5 | 0 |
| July | 25°C / 77°F | 17°C / 63°F | 5 mm | 1 | 0 |
| August | 25°C / 77°F | 17°C / 63°F | 5 mm | 1 | 0 |
| September | 24°C / 75°F | 16°C / 61°F | 55 mm | 7 | 0 |
| October | 21°C / 70°F | 14°C / 57°F | 140 mm | 11 | 0 |
| November | 17°C / 63°F | 11°C / 52°F | 155 mm | 12 | 0 |
| December | 15°C / 59°F | 9°C / 48°F | 170 mm | 12 | 0 |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Sintra in August →
Frequently asked questions
How hot is Sintra in August?
In August, Sintra averages a high of 25°C (77°F) and a low of 17°C (63°F) — generally warm.
Does it rain a lot in Sintra in August?
August is generally dry in Sintra, with about 1 rainy day on average.
Is August a good time to visit Sintra?
August is warm and mostly dry. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Sintra in August?
Pack light layers for warm days and cooler evenings. See the full August packing list for Sintra for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.