Annual mean 15°C · wettest around January · prevailing wind W
Warmest
23.9 °C
Coldest
12.8 °C
Wettest
51%
Windiest
4.6 m/s
Prevailing
W
3.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Porto over the whole year is 15°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about 7°C. The rainy (wet) season in Porto runs from October to April, peaking in January with a 39% chance of rain on a given day. The dry season is May to September; August is the driest month, at 8%. Winds in Porto are highest in March, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.5 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Porto come in July, when the sky is typically 49% covered; December is the cloudiest month, at 58%.
Month by month Porto climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
13°C
7°C
10°C
39%
57%
3.0 m/s
13
0
72
February
15°C
8°C
12°C
32%
58%
2.9 m/s
28
0
79
March
15°C
9°C
12°C
37%
58%
3.2 m/s
28
0
77
April
18°C
11°C
14°C
30%
55%
3.0 m/s
48
2
80
May
19°C
14°C
18°C
18%
53%
3.0 m/s
71
8
79
June
21°C
15°C
19°C
13%
54%
2.9 m/s
81
12
74
July
23°C
17°C
22°C
10%
49%
2.9 m/s
80
20
61
August
23°C
16°C
22°C
8%
52%
2.7 m/s
84
24
59
September
22°C
15°C
22°C
18%
50%
2.5 m/s
85
23
61
October
20°C
14°C
19°C
34%
55%
2.7 m/s
79
10
72
November
16°C
10°C
14°C
36%
57%
2.8 m/s
44
0
81
December
14°C
9°C
12°C
39%
58%
3.1 m/s
23
0
76
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Porto weather by season
Year round, Porto has days of about 13°C at their warmest in January, its coolest month, and 23°C in August, its warmest; the coolest hours of the day run from 7°C to 17°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around January and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Porto weather in winterDecember to February
High 14°CLow 8°CRain 37%
Winter in Porto has typical daily highs of about 14°C and lows of about 8°C, with a 37% chance of rain on a given day.
Porto weather in springMarch to May
High 18°CLow 11°CRain 29%
Spring in Porto has typical daily highs of about 18°C and lows of about 11°C, with a 29% chance of rain on a given day.
Porto weather in summerJune to August
High 22°CLow 16°CRain 10%
Summer in Porto has typical daily highs of about 22°C and lows of about 16°C, with a 10% chance of rain on a given day.
Porto weather in autumnSeptember to November
High 19°CLow 13°CRain 29%
Autumn in Porto has typical daily highs of about 19°C and lows of about 13°C, with a 29% chance of rain on a given day.
When is the rainy season in Porto?
The rainy (wet) season in Porto runs from October to April, peaking in January with a 39% chance of rain on a given day. The dry season is May to September; August is the driest month, at 8%.
What time of year is Porto windiest?
Winds in Porto are highest in March, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.5 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Porto year round?
The average temperature in Porto over the whole year is 15°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about 7°C.