Climate in Sintra, Portugal

Sintra, Portugal has a mediterranean climate. The annual average temperature is about 17.4°C, with around 2527 hours of sunshine; the national rainfall baseline is roughly 751 mm across 85 rainy days a year. The warmest month is Jul (highs near 28.2°C) and the coldest is Jan (lows near 6.6°C). These are deterministic planning estimates, not a forecast or measured station data. Temperature and sunshine follow the city's latitude; rainfall and the climate zone come from a country-level baseline that every city in the country shares (refined by region in the United States, Canada and Australia), so they do not show local differences. Check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Sintra is classified as Mediterranean. The classification combines the city’s own temperature range, which follows its latitude, with a rainfall pattern taken at country level for Portugal — so cities in the same country usually share a zone.

The rainfall baseline for Portugal is about 751 mm a year over roughly 85 rainy days, with the wettest month Dec and the driest Jul. This figure is not specific to Sintra: every city in Portugal carries the same baseline, so it will not show the difference between, say, a dry inland city and a wet coastal one. Use an official meteorological service for local rainfall.

Sintra sees an estimated 2527 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in Sintra are Jul, Jun, Aug. Conditions vary year to year — verify with a current forecast before booking.

Sintra has a climate comfort score of 95/100, a very comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in Lisbon — Mediterranean, comfort 95/100
• Climate in Amadora — Mediterranean, comfort 95/100
• Climate in Almada — Mediterranean, comfort 95/100