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www.weatherandclimate.eu
The table shows the combined weather forecast Porto for three days ahead, automatically compiled according to several independent sources. The time is local. The atmospheric pressure in mm of mercury - at the level of the city (station).
The indicators of Tef (effective temperature), Tefs (effective sun temperature) and verbal characteristics of weather comfort are given (see explanations below).

Weather in Porto

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
15.09
Mon
night
03 h
Partly cloudy +17 760 N
2 m/s
0.0 +17 +17
15.09
Mon
morn
06 h
Partly cloudy +16 760 N
1 m/s
0.0 +17 +17
15.09
Mon
morn
09 h
Light cloudy +18 761 N
1 m/s
0.0 +19 +23
15.09
Mon
day
12 h
Light cloudy +22 761 N
3 m/s
0.0 +19 +26
15.09
Mon
day
15 h
Clear +24 760 NW
5 m/s
0.0 +20 +24
15.09
Mon
even
18 h
Clear +21 760 NW
5 m/s
0.0 +19 +19
15.09
Mon
even
21 h
Clear +18 760 NW
2 m/s
0.0 +18 +18
16.09
Tue
night
00 h
Clear +16 760 NE
1 m/s
0.0 +17 +17
16.09
Tue
night
03 h
Clear +15 759 NE
1 m/s
0.0 +16 +16
16.09
Tue
morn
06 h
Light cloudy +15 759 NE
2 m/s
0.0 +15 +15
16.09
Tue
morn
09 h
Clear +17 759 NE
1 m/s
0.0 +18 +23
16.09
Tue
day
12 h
Clear +25 760 NW
1 m/s
0.0 +20 +34
16.09
Tue
day
15 h
Clear +27 759 W
3 m/s
0.0 +22 +29
16.09
Tue
even
18 h
Clear +24 758 NW
3 m/s
0.0 +20 +20
16.09
Tue
even
21 h
Clear +18 759 NW
1 m/s
0.0 +19 +19
17.09
Wen
night
00 h
Clear +17 759 N
1 m/s
0.0 +18 +18
17.09
Wen
night
03 h
Clear +16 759 NE
1 m/s
0.0 +17 +17
17.09
Wen
morn
06 h
Light cloudy +15 759 E
1 m/s
0.0 +16 +16
17.09
Wen
morn
09 h
Light cloudy +16 759 NE
1 m/s
0.0 +17 +21
17.09
Wen
day
12 h
Clear +22 760 W
2 m/s
0.0 +19 +31
17.09
Wen
day
15 h
Clear +25 759 NW
3 m/s
0.0 +21 +28
17.09
Wen
even
18 h
Clear +23 759 NW
2 m/s
0.0 +19 +19
17.09
Wen
even
21 h
Clear +18 759 NW
1 m/s
0.0 +19 +19
Mon, 15.09
Mon
Mon
Mon
Mon
Mon
Mon
Mon
Tue
03 h
06 h
09 h
12 h
15 h
18 h
21 h
00 h
Air temperature,°С
+17
+16
+18
+22
+24
+21
+18
+16
Atmospheric pressure
760
760
761
761
760
760
760
760
Wind
N
2 m/s
N
1 m/s
N
1 m/s
N
3 m/s
NW
5 m/s
NW
5 m/s
NW
2 m/s
NE
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
+17
+17
+19
+19
+20
+19
+18
+17
Tefs,°C
+17
+17
+23
+26
+24
+19
+18
+17
Weather comfort
 
 
 
 
 
 
 
 
Tue
Tue
Tue
Tue
Tue
Tue
Tue
Wen
03 h
06 h
09 h
12 h
15 h
18 h
21 h
00 h
Air temperature,°С
+15
+15
+17
+25
+27
+24
+18
+17
Atmospheric pressure
759
759
759
760
759
758
759
759
Wind
NE
1 m/s
NE
2 m/s
NE
1 m/s
NW
1 m/s
W
3 m/s
NW
3 m/s
NW
1 m/s
N
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
+16
+15
+18
+20
+22
+20
+19
+18
Tefs,°C
+16
+15
+23
+34
+29
+20
+19
+18
Weather comfort
 
 
 
 
 
 
 
 
Wen
Wen
Wen
Wen
Wen
Wen
Wen
03 h
06 h
09 h
12 h
15 h
18 h
21 h
Air temperature,°С
+16
+15
+16
+22
+25
+23
+18
Atmospheric pressure
759
759
759
760
759
759
759
Wind
NE
1 m/s
E
1 m/s
NE
1 m/s
W
2 m/s
NW
3 m/s
NW
2 m/s
NW
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
+17
+16
+17
+19
+21
+19
+19
Tefs,°C
+17
+16
+21
+31
+28
+19
+19
Weather comfort
 
 
 
 
 
 
 
 
  • Mon, 15.09
  • Tue, 16.09
  • Wen, 17.09
Location of a geographical point Porto (Portugal): latitude 41.2322 longitude -8.6789 height above sea level 77 m.
Navigation:
Notes:
Tef - Effective temperature - the temperature felt by a seasonally dressed person in the shade. The calculation takes into account the influence of humidity, wind speed and atmospheric pressure on the human heat perception.
Tefs - Effective sun temperature - the temperature that a person feels, adjusted for solar radiation. Depends on the amount of cloud cover and the height of the sun above the horizon. At night and in cloudy weather the correction is zero.
Weather comfort - a verbal characteristic that characterizes the favorability or unfavorability of forecast meteorological conditions for a seasonally dressed person. Both relative characteristics are used: warm, cool, cold, very cold, showing how much the expected Tef will be higher or lower than the norm, and absolute ones: the risk of sunstroke, the risk of overheating, hot, very hot, stuffy, very stuffy, comfort, the risk of colds, the risk of frostbite that occur when the Tef, Tefs, air temperature or a combination of certain criteria are reached.