Climate

Climate in Lisbon, Portugal

GCI planning model, separate from the NASA reference below: Lisbon, Portugal has a mediterranean climate. The annual average temperature is about 17.5°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 28.3°C) and the coldest is Jan (lows near 6.7°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.

Climate zone
Mediterranean
Comfort score
95/100

What these numbers represent

GCI scores and planning amounts are modelled or editorial indicators, not measured city statistics or official estimates. Country assumptions are not local observations. Institutional references explain context; they do not supply these scores.

Source-backed temperature context is available in the NASA POWER climate reference. It is gridded reanalysis, not a weather-station measurement, and does not validate GCI's other scores.

Content and provenance reviewed 2026-10-17; this is not a new observation date. For GCI models, data year means model edition, not a measurement period. Source-backed datasets state their own periods. Read the data categories and limitations.

NASA POWER climate reference

NASA POWER / MERRA-2 gridded temperature climatology at the Lisbon city-centre coordinate, January 2001 to December 2025. Not a station observation, current weather or an official GCI score. The grid can include surroundings beyond the city and does not resolve neighbourhood conditions.

Annual mean: 16.54 °C. Source period: 2001–2025. Retrieved 2026-10-17.

Lisbon: monthly mean temperature, NASA POWER grid, 2001–2025
MonthMean temperature (°C)
JAN12.91
FEB12.77
MAR13.80
APR15.04
MAY16.86
JUN18.85
JUL19.90
AUG20.47
SEP19.98
OCT18.58
NOV15.52
DEC13.54

The GCI planning-model tables below are retained separately. Their temperatures and comfort scores are not calibrated to this NASA series and must not be treated as observations or blended with it.

Source data: NASA POWER JSON · Source methodology

Climate overview

Lisbon, Portugal has a mediterranean climate. The annual average temperature is about 17.5°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 28.3°C) and the coldest is Jan (lows near 6.7°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 2026-10-17.

Climate zone

Köppen-style classification derived deterministically from latitude and a country-level precipitation baseline.

Climate zone

Lisbon 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.

GCI planning-model temperatures

Annual averages and seasonal extremes.

Average temperatures

  • Annual average17.5°C
  • Warmest monthJul (28.3°C)
  • Coldest monthJan (6.7°C)
  • Comfort score95/100

Rainfall overview

A country-level precipitation baseline and how it is distributed across the year.

Rainfall overview

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 Lisbon: 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.

Sunshine overview

Estimated annual sunshine and its seasonal pattern.

Sunshine overview

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

Monthly climate table

Month-by-month estimates. Temperature and sunshine follow the city’s latitude; the rainfall and rainy-day columns distribute the country-level baseline.

Monthly climate table

Lisbon monthly climate table
MonthHighLowRainRainy DaysSunshine
Jan16.7°C6.7°C107 mm12102 h
Feb17.4°C7.4°C88 mm10127 h
Mar19.6°C9.6°C74 mm8166 h
Apr22.5°C12.5°C59 mm7203 h
May25.4°C15.4°C37 mm4273 h
Jun27.5°C17.5°C15 mm2328 h
Jul28.3°C18.3°C6 mm1352 h
Aug27.5°C17.5°C15 mm2328 h
Sep25.4°C15.4°C44 mm5258 h
Oct22.5°C12.5°C85 mm9176 h
Nov19.6°C9.6°C107 mm12118 h
Dec17.4°C7.4°C114 mm1396 h

Best months to visit

Months with the mildest temperatures and lower rainfall, by the deterministic comfort heuristic. Not a tourism ranking.

Best months to visit

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

Seasonal summary

Average conditions by season.

Seasonal summary

  • Winter

    17°C / 7°C

    309 mm rain

  • Spring

    23°C / 13°C

    170 mm rain

  • Summer

    28°C / 18°C

    36 mm rain

  • Autumn

    23°C / 13°C

    236 mm rain

Climate comfort score

A 0–100 composite of temperature balance, rainfall, sunshine, seasonality, and winter/summer extremes; higher means more comfortable. Used consistently across the platform.

Climate comfort score

Lisbon 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.

Continue exploring

Continue researching this city across the platform's other planning surfaces.

Continue exploring

Related guides

Keep exploring Lisbon across the rest of the dataset — its full profile, travel guides and nearby nature.

Lisbon city profileFull intelligence profile with quick answers, FAQs and every indexed dimension.Weekend trips from LisbonCurated nearby getaways and day trips within easy reach.Nature near LisbonVerified parks, lakes, coasts and uplands within ~170 km.Lisbon visual guideA visual orientation to the city and its surroundings.