In general the best time to visit Lisbon is probably June, July, August, September, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, December.
The best time to visit may differ depending on what you are looking for:
The best time for a sun tanning holiday is July, August, September. Average maximum temperatures are up to +81°F in August and it has 22 sunny days on average.
In general, it’s pleasant to walk and do outdoor activities during April - November.
If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in Lisbon in different months
This is the average weather in Lisbon for each month based on historic data:
In June, July, August, September the weather is great. There are an average of 22 sunny days in August and the temperature ranges from +64°F to +81°F.
March, April, May, October usually has good weather. Average maximum temperature reaches +72°F during October.
In January, February, November, December the weather is average. Expect around 48 rainy days, and the precipitation amounts to approximately 122 mm in December.
Climate in Lisbon
Here is the detailed breakdown of the climate in Lisbon for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+72°F
+75°F
+82°F
+90°F
+93°F
+106°F
+104°F
+106°F
+102°F
+93°F
+77°F
+70°F
Average Maximum Temperature
+57°F
+59°F
+63°F
+66°F
+70°F
+75°F
+79°F
+81°F
+77°F
+72°F
+64°F
+59°F
Minimum Temperature
+34°F
+37°F
+32°F
+43°F
+46°F
+54°F
+59°F
+59°F
+55°F
+48°F
+41°F
+36°F
Avg. water temperature
+62°F
+62°F
+62°F
+64°F
+67°F
+68°F
+70°F
+72°F
+71°F
+70°F
+67°F
+63°F
Humidity, %
79
75
71
71
69
68
66
65
67
73
78
80
Rain, mm
84
68
61
67
40
12
2
4
34
93
103
122
Snow, mm
0
0
0
0
0
0
0
0
0
0
0
0
Average wind speed, m/s
3
3
3
4
4
4
4
4
3
3
3
3
Sunny Days
12
10
13
11
14
16
20
22
18
14
11
11
Cloud Days
7
6
7
7
8
9
9
7
6
5
6
6
Rainy Days
12
11
10
10
7
4
2
2
5
10
12
13
Snowy Days
0
0
0
0
0
0
0
0
0
0
0
0
Average Temperature
Here are the average maximum and minimum temperatures in Lisbon during the whole year:
The hottest month in Lisbon is August with average maximum temperature going up to +81°F. The coldest month is January with the lowest temperatures of +48°F.
Water temperature
Here are the water temperatures in Lisbon during the whole year:
Lisbon achieves its warmest water temperature in October, where the average sea temperature goes up to +68°F in average. Coldest water temperature is in March with +59°F in average.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Lisbon looks throughout the year, in %:
The most humid month in Lisbon is December with average humidity going up to 80%. The least humid month is August with an average humidity of 65%.
Rain
Amount of rainfall in mm. in Lisbon during the whole year based on historical data:
The sunniest and driest month is August with approximately 22 sunny days and a total precipitation of around 4 mm. The rainiest and wettest month is December with approximately 13 rainy days and 122 mm of total precipitation.
FAQ
Frequently asked questions about the weather in Lisbon:
What is the hottest month in Lisbon?
The hottest month in Lisbon is August with average maximum temperature of +81°F.
What is the coldest month in Lisbon?
The coldest month in Lisbon is January with minimum temperatures of +48°F.
Is Lisbon worth visiting in winter?
Winter in Lisbon could be a good time to visit, as the weather is generally ok.
When does it rain the least in Lisbon?
if you're looking to visit Lisbon when it rains the least, you should plan your trip for December, November, October. During this time, rainfall is rare with the driest month being July with only 2 mm of rain.
Other cities in Portugal
Check out the weather for other cities in Portugal.
For this page, we’ve looked at the typical weather in Lisbon, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.