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Lisbon · Portugal · 1995–2024 averages

Lisbon weather, month by month. July is the pick.

Thirty years of averages for Lisbon, Portugal — how hot it really feels, when the rain arrives, and what the air is like. July comes out on top; January is the one to skip.

Lisbon's white and terracotta rooftops tumbling down the hillside to the Tagus, with the dome of the National Pantheon above them
Photo: Vitor Oliveira from Torres Vedras, PORTUGAL / CC BY-SA 2.0

The year at a glance

Tap a month for its full breakdown.

July

bestscore 95.5/100

Mild, sticky and dry, with clean air.

Feels like
27°
mild
Real temp
26°
mild
Humidity
70%
sticky
Rain
3mm
dry
Cloud cover
23%
clear
Air quality
47
clean
Daylight
14.6h
long days

Month by month, metric by metric

Each row is one measure across the same twelve months. The tint says how good that month is for it, the word says why.

  • Good
  • Okay
  • Rough
  • Grim

Feels like

peaks at 28° in August

  1. Jan11°cold
  2. Feb12°cold
  3. Mar15°cool
  4. Apr17°cool
  5. May21°mild
  6. Jun25°mild
  7. Jul27°mild
  8. Aug28°warm
  9. Sep25°mild
  10. Oct21°mild
  11. Nov15°cool
  12. Dec12°cold

Real temp

14–27° in the shade across the year

  1. Jan14°cool
  2. Feb15°cool
  3. Mar17°cool
  4. Apr18°cool
  5. May21°mild
  6. Jun24°mild
  7. Jul26°mild
  8. Aug27°mild
  9. Sep25°mild
  10. Oct22°mild
  11. Nov17°cool
  12. Dec15°cool

Humidity

70% at its driest, 82% at its most oppressive

  1. Jan82%sweaty
  2. Feb79%sweaty
  3. Mar76%sweaty
  4. Apr75%sweaty
  5. May73%sticky
  6. Jun71%sticky
  7. Jul70%sticky
  8. Aug70%sticky
  9. Sep73%sticky
  10. Oct78%sweaty
  11. Nov80%sweaty
  12. Dec82%sweaty

Rain

88mm in December, 3mm in July

  1. Jan70mmdryish
  2. Feb54mmdryish
  3. Mar57mmdryish
  4. Apr53mmdryish
  5. May38mmdryish
  6. Jun13mmdry
  7. Jul3mmdry
  8. Aug4mmdry
  9. Sep33mmdryish
  10. Oct80mmsome rain
  11. Nov86mmsome rain
  12. Dec88mmsome rain

Cloud cover

23% at its clearest, 56% at its greyest

  1. Jan53%bright
  2. Feb50%bright
  3. Mar52%bright
  4. Apr50%bright
  5. May45%bright
  6. Jun35%bright
  7. Jul23%clear
  8. Aug25%clear
  9. Sep36%bright
  10. Oct51%bright
  11. Nov52%bright
  12. Dec56%mixed

Air quality

worst in January, cleanest in June

  1. Jan57moderate
  2. Feb55moderate
  3. Mar51moderate
  4. Apr49clean
  5. May47clean
  6. Jun46clean
  7. Jul47clean
  8. Aug48clean
  9. Sep49clean
  10. Oct51moderate
  11. Nov51moderate
  12. Dec55moderate

Daylight

9.5h to 14.8h of daylight across the year

  1. Jan9.8hshort
  2. Feb10.8hshortish
  3. Mar12heven
  4. Apr13.2heven
  5. May14.3hlong days
  6. Jun14.8hlong days
  7. Jul14.6hlong days
  8. Aug13.6heven
  9. Sep12.4heven
  10. Oct11.2hshortish
  11. Nov10.1hshortish
  12. Dec9.5hshort

Lisbon's air, month by month

The air is at its worst in January at 57 AQI (moderate), and at its cleanest in June at 46 (clean). It tracks the seasons closely.

Every month in full

All twelve months, all seven measures.

MonthFeels likeReal tempHumidityRainCloud coverAir qualityDaylight
January11° cold14° cool82% sweaty70mm dryish53% bright57 moderate9.8h short
February12° cold15° cool79% sweaty54mm dryish50% bright55 moderate10.8h shortish
March15° cool17° cool76% sweaty57mm dryish52% bright51 moderate12h even
April17° cool18° cool75% sweaty53mm dryish50% bright49 clean13.2h even
May21° mild21° mild73% sticky38mm dryish45% bright47 clean14.3h long days
June25° mild24° mild71% sticky13mm dry35% bright46 clean14.8h long days
July27° mild26° mild70% sticky3mm dry23% clear47 clean14.6h long days
August28° warm27° mild70% sticky4mm dry25% clear48 clean13.6h even
September25° mild25° mild73% sticky33mm dryish36% bright49 clean12.4h even
October21° mild22° mild78% sweaty80mm some rain51% bright51 moderate11.2h shortish
November15° cool17° cool80% sweaty86mm some rain52% bright51 moderate10.1h shortish
December12° cold15° cool82% sweaty88mm some rain56% mixed55 moderate9.5h short

Lisbon weather questions

What is the best time to visit Lisbon?
July scores best across temperature, rain, humidity and air quality — 27° feels-like, 3mm of rain and 70% humidity. January is the month to avoid: 70mm of rain and 57 AQI.
How hot does Lisbon get?
August is the peak, at 28° feels-like (27° in the shade) — warm. Even in July it reaches 27°.
When is the rainy season in Lisbon?
December is the wettest month at 88mm, and July the driest at just 3mm.
Is air quality a problem in Lisbon?
January is the worst month at 57 AQI (moderate), and June the best at 46 (clean).

Weather normals from Open-Meteo (ERA5 reanalysis, 1995–2024) and CAMS air quality (2015–2024), licensed CC-BY-4.0. Contains modified Copernicus Climate Change Service information. These are long-run averages, not forecasts — any given year will differ.

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