Lisbon, Portugal Climate & Monthly Averages
Lisbon has a Mediterranean climate. August is the hottest month, averaging 83° by day; January is the coldest at 58°.
Sunshine is a defining feature of Lisbon's climate
Lisbon runs on a dry-summer rhythm: the warmest months are also the driest. August averages 2 mm (0.1 in) while the wet season peaks in October at 3.1 inches (78 mm). Highs range from 58°F (15°C) to 83°F (28°C).
How sun, temperature and rain fit together
Precipitation concentrates in October - 3.1 inches (78 mm) on 10 days - and thins out by August. January bottoms out at 58°F (15°C) in daylight, 48°F (9°C) after dark. August is the warm end of the year, averaging 83°F (28°C) by day and 65°F (18°C) overnight. The gridded 2015-2024 daily record for this location tops out at 107°F (42°C) and bottoms at 35°F (2°C) - decade extremes, not all-time station records.
July is the brightest month at 13.4 hours of sun a day, against an annual average of 10.3 - sunnier than roughly 75% of the cities we track.
Six of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is April through June.
More climate facts for Lisbon
- Hottest month: August - highs near 83°F (28°C)
- Coldest month: January - highs near 58°F (15°C)
- Decade extremes (2015-2024): 107°F (42°C) high · 35°F (2°C) low
- Wettest month: October (10 rainy days) · Sunniest: July (13.4 h sun/day)
- Climate type: Mediterranean
- Annual swing: 11°C between the average warmest and coolest month · day to night: 8°C
- Average humidity: 75%
The most comfortable sunny-weather window
Best time to visit Lisbon
May to September and February is the sweet spot for Lisbon - the dry season is running but the afternoons are still bearable. Expect 76°F (24°C) in the afternoon and around 3 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in May.
What to pack
Pack for Lisbon with light clothing for the warm months and moisture-wicking fabrics for the humidity. Note the gap between afternoon and night: August pairs 83°F (28°C) with 65°F (18°C).
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 58° | 48° | 8 | 2.2 in | 7.7 h/day | 9.7 h | 24% | 81% |
| February | 61° | 49° | 6 | 1.9 in | 8.5 h/day | 10.7 h | 23% | 78% |
| March | 63° | 51° | 9 | 2.3 in | 9.9 h/day | 11.8 h | 28% | 75% |
| April | 67° | 54° | 9 | 2.4 in | 11.1 h/day | 13.2 h | 30% | 75% |
| May | 73° | 58° | 4 | 1.5 in | 12.4 h/day | 14.3 h | 15% | 70% |
| June | 77° | 62° | 4 | 0.6 in | 13.3 h/day | 14.9 h | 14% | 71% |
| July | 82° | 65° | 1 | 0.1 in | 13.4 h/day | 14.6 h | 2% | 68% |
| August | 83° | 65° | 1 | 0.1 in | 12.4 h/day | 13.7 h | 2% | 68% |
| September | 79° | 64° | 4 | 1.2 in | 11.1 h/day | 12.4 h | 13% | 71% |
| October | 73° | 60° | 10 | 3.1 in | 9.1 h/day | 11.1 h | 31% | 76% |
| November | 65° | 54° | 10 | 2.9 in | 7.6 h/day | 10.0 h | 32% | 81% |
| December | 61° | 51° | 7 | 3.0 in | 7.4 h/day | 9.5 h | 24% | 83% |
Lisbon month by month
Each card shows the average high and low. The bar places that month between Lisbon's coldest night and warmest afternoon.
January
- Rain
- 8 days
- Sunshine
- 7.7 h
- Daylight
- 9.7 h
February
- Rain
- 6 days
- Sunshine
- 8.5 h
- Daylight
- 10.7 h
March
- Rain
- 9 days
- Sunshine
- 9.9 h
- Daylight
- 11.8 h
April
- Rain
- 9 days
- Sunshine
- 11.1 h
- Daylight
- 13.2 h
May
- Rain
- 4 days
- Sunshine
- 12.4 h
- Daylight
- 14.3 h
June
- Rain
- 4 days
- Sunshine
- 13.3 h
- Daylight
- 14.9 h
July
- Rain
- 1 day
- Sunshine
- 13.4 h
- Daylight
- 14.6 h
August
- Rain
- 1 day
- Sunshine
- 12.4 h
- Daylight
- 13.7 h
September
- Rain
- 4 days
- Sunshine
- 11.1 h
- Daylight
- 12.4 h
October
- Rain
- 10 days
- Sunshine
- 9.1 h
- Daylight
- 11.1 h
November
- Rain
- 10 days
- Sunshine
- 7.6 h
- Daylight
- 10.0 h
December
- Rain
- 7 days
- Sunshine
- 7.4 h
- Daylight
- 9.5 h
Looking for warmer alternatives? Browse warm places by month, or compare Lisbon's coolest part of the year: January, February, December.
Seasonal weather under Lisbon's sunnier skies
Spring (March through May)
Through spring, Lisbon is mild: 68°F (20°C) by day, 54°F (12°C) after dark, and expect showers on roughly 22 days across the season. Daylight is generous - around 11.1 hours of sun a day.
Summer (June through August)
Through summer, Lisbon settles into easy warmth: 80°F (27°C) by day, 64°F (18°C) after dark, and precipitation is sparse, near 21 mm (0.8 in) for the season. Daylight is generous - around 13.0 hours of sun a day.
Fall (September through November)
Through fall, Lisbon is pleasantly warm: 72°F (22°C) by day, 59°F (15°C) after dark, and expect showers on roughly 23 days across the season.
Winter (December through February)
Through winter, Lisbon is mild: 60°F (15°C) by day, 49°F (10°C) after dark, and expect showers on roughly 21 days across the season.
How unusual is Lisbon?
- Lisbon sits close to the middle of our dataset on most measures: 62°F (17°C) as an annual average, 21.4 inches (543 mm) of precipitation and 10.3 hours of sun a day.
These comparisons use the same ten-year window for every city in the dataset.
Lisbon temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.