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Lisbon Weather by Month
Average temperatures, rainfall and humidity for Lisbon, Portugal, month by month, built from OpenWeather's historical records. Use it to see what a typical Lisbon month looks like before you travel — then check the live Lisbon forecast for the days ahead.
Warmest month
August
28°C average high
Coolest month
January
8°C average low
Wettest month
January
56 mm of rain
Driest month
August
5 mm of rain
Average temperature and rainfall in Lisbon by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 14°C | 8°C | -5°C / 21°C | 56 mm | 81% | 15 km/h |
| February | 15°C | 9°C | -1°C / 23°C | 44 mm | 78% | 16 km/h |
| March | 17°C | 10°C | 2°C / 26°C | 53 mm | 74% | 17 km/h |
| April | 19°C | 12°C | 0°C / 31°C | 51 mm | 74% | 16 km/h |
| May | 22°C | 14°C | 7°C / 35°C | 22 mm | 69% | 18 km/h |
| June | 25°C | 16°C | 10°C / 40°C | 16 mm | 68% | 18 km/h |
| July | 27°C | 18°C | 12°C / 39°C | 7 mm | 67% | 18 km/h |
| August | 28°C | 18°C | 14°C / 43°C | 5 mm | 67% | 19 km/h |
| September | 26°C | 17°C | 8°C / 37°C | 28 mm | 67% | 16 km/h |
| October | 22°C | 15°C | 6°C / 33°C | 53 mm | 74% | 14 km/h |
| November | 17°C | 11°C | 1°C / 24°C | 50 mm | 80% | 14 km/h |
| December | 15°C | 9°C | -1°C / 20°C | 48 mm | 82% | 14 km/h |
Best time to visit Lisbon
The most comfortable time to visit Lisbon is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around January, totalling about 431 mm a year.
Travellers who prefer heat should aim for August, when highs average 28°C. January is the month to avoid if rain would spoil your plans — it averages 56 mm, roughly 12× the rainfall of August.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Lisbon forecast for what is happening now.
Weather across Portugal right now
- Almada29°C
- Amadora28°C
- Aveiro27°C
- Aves32°C
- Barcelos33°C
- Barreiro29°C
- Braga32°C
- Cascais27°C
- Coimbra31°C
- Famalicão33°C
- Funchal27°C
- Gondomar24°C
- Guimarães32°C
- Leiria25°C
- Lisbon29°C
- Loures30°C
- Maia24°C
- Matosinhos24°C
- Odivelas30°C
- Oeiras27°C
- Paredes34°C
- Porto24°C
- Queluz28°C
- Setúbal28°C
- Sintra27°C
- Torres Vedras28°C
- Valongo32°C
- Viana do Castelo23°C
- Vila do Conde24°C
- Vila Franca de Xira32°C
- Vila Nova de Gaia24°C
- Viseu33°C
