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.
The year at a glance
Tap a month for its full breakdown.
July
bestscore 95.5/100Mild, 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 strip covers the same twelve months, so you can see where the rain lands and how the air shifts with it.
Feels like
peaks at 28° in August
Real temp
14–27° in the shade across the year
Humidity
70% at its driest, 82% at its most oppressive
Rain
88mm in December, 3mm in July
Cloud cover
23% at its clearest, 56% at its greyest
Air quality
worst in January, cleanest in June
Daylight
9.5h to 14.8h of daylight across the year
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.
| Month | Feels like | Real temp | Humidity | Rain | Cloud cover | Air quality | Daylight |
|---|---|---|---|---|---|---|---|
| January | 11° cold | 14° cool | 82% sweaty | 70mm dryish | 53% bright | 57 moderate | 9.8h short |
| February | 12° cold | 15° cool | 79% sweaty | 54mm dryish | 50% bright | 55 moderate | 10.8h shortish |
| March | 15° cool | 17° cool | 76% sweaty | 57mm dryish | 52% bright | 51 moderate | 12h even |
| April | 17° cool | 18° cool | 75% sweaty | 53mm dryish | 50% bright | 49 clean | 13.2h even |
| May | 21° mild | 21° mild | 73% sticky | 38mm dryish | 45% bright | 47 clean | 14.3h long days |
| June | 25° mild | 24° mild | 71% sticky | 13mm dry | 35% bright | 46 clean | 14.8h long days |
| July | 27° mild | 26° mild | 70% sticky | 3mm dry | 23% clear | 47 clean | 14.6h long days |
| August | 28° warm | 27° mild | 70% sticky | 4mm dry | 25% clear | 48 clean | 13.6h even |
| September | 25° mild | 25° mild | 73% sticky | 33mm dryish | 36% bright | 49 clean | 12.4h even |
| October | 21° mild | 22° mild | 78% sweaty | 80mm some rain | 51% bright | 51 moderate | 11.2h shortish |
| November | 15° cool | 17° cool | 80% sweaty | 86mm some rain | 52% bright | 51 moderate | 10.1h shortish |
| December | 12° cold | 15° cool | 82% sweaty | 88mm some rain | 56% mixed | 55 moderate | 9.5h 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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