LisbonPhoto: Dale Cruse - 10M views from San Francisco, CA, USA · CC BY 4.0Portugal · Europe
Best time to visit Lisbon
Lisbon works as a city break year-round: mild winters, warm but rarely oppressive summers and lots of sun. For beach days, the coastal towns nearby are ideal.
Climate decision
Best travel months for Lisbon
Top recommendation
Next highest scores
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
March · Wet days
11.6 days/month
1991–2025: 9.2 days/month
+2.4 days/month · higher
May · Monthly precipitation
13.6 mm/month
1991–2025: 37.3 mm/month
-23.7 mm/month · lower
October · Mean daily maximum
21.5 °C
1991–2025: 20.6 °C
+0.9 °C · higher
September · Sea temperature
18.9 °C
1991–2025: 18.8 °C
+0.1 °C · similar
July: 0/155 days at or above 30 °C; highest single value 30 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Rainfall rhythm
Lisbon: rainfall separates the travel months
The driest and wettest months are 10.7 rainy days apart. Average daily highs vary by 8.4 °C, so both signals matter when choosing a month.
What matters
A warmer month is not automatically the most reliable. Read the drier windows alongside sunshine, sea temperature and the activity you have in mind.
Fewest rainy days
July · 0.9
Most rainy days
November · 11.6
Most sunshine
July · 9.1 h
Warmest sea
September · 18.8 °C
For your trip planning
Lisbon: hill walk or Atlantic outing?
The route matters alongside temperature
Some historic Lisbon neighbourhoods and viewpoints lie on hills; tram 12 connects several of them. Plan climbs and breaks deliberately rather than counting kilometres alone. Check current service locally if you want to ride part of the route.
Background: Turismo de Lisboa · No. 12 tram
City warmth is not the same as warm sea
Even in summer, our series shows sea temperatures below daytime air temperatures. If swimming is the main purpose, check water warmth alongside the city-break score. A particular beach also requires a local conditions check.
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 15 | 11 | 10 | 69 | 2.9 | 81 | 4.8 | 15 | 44 |
| February | 15 | 11 | 9 | 52 | 4.1 | 80 | 4.8 | 15 | 49 |
| March | 16 | 12 | 9 | 57 | 5.6 | 80 | 4.7 | 15 | 53 |
| April | 17 | 13 | 9 | 52 | 7.3 | 79 | 4.7 | 16 | 58 |
| May | 19 | 15 | 7 | 37 | 8.6 | 79 | 4.6 | 16 | 69 |
| June | 21 | 17 | 3 | 10 | 9.0 | 80 | 4.6 | 18 | 79 |
| July | 23 | 18 | 1 | 3 | 9.1 | 80 | 4.8 | 18 | 82 |
| August | 23 | 18 | 1 | 5 | 8.3 | 81 | 4.5 | 19 | 84 |
| September | 22 | 18 | 5 | 28 | 6.6 | 81 | 4.0 | 19 | 81 |
| October | 21 | 17 | 10 | 76 | 4.5 | 81 | 4.2 | 18 | 66 |
| November | 18 | 14 | 12 | 87 | 3.2 | 81 | 4.8 | 17 | 52 |
| December | 16 | 12 | 11 | 84 | 2.5 | 82 | 5.0 | 16 | 45 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
Find a place to stay
Where to stay in Lisbon
Compare available stays, prices and cancellation terms for Lisbon on Booking.com.
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Useful next decisions
Similar destinations
The number is the overall climate score, not a similarity score.
Country and region
Frequently asked questions
When is the best time to visit Lisbon?
The strongest climate months are June, July, August, September. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in Lisbon?
The average daily maximum temperature in Lisbon is highest in August at around 23 °C.
When is the sea warmest at Lisbon?
In September, at around 19 °C.