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May weather forecast in Portland
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
28
+10
+8
28 April, sun
+10
+8
Feels like
+6
757 mmHg
68%
6.5
m/s
W
+8
28 April, Sunday. day, 10°; night, 8°; rain
29
+10
+7
29 April, mon
+10
+7
Feels like
+6
759 mmHg
68%
6.5
m/s
W
+8
29 April, Monday. day, 10°; night, 7°; partly cloudy
30
+10
+7
30 April, tue
+10
+7
Feels like
+7
758 mmHg
75%
5.9
m/s
S
+9
30 April, Tuesday. day, 10°; night, 7°; partly cloudy
1
+10
+8
1 May, wed
+10
+8
Feels like
+7
757 mmHg
79%
5
m/s
S
+9
1 May, Wednesday. day, 10°; night, 8°; overcast
2
+11
+8
2 May, thu
+11
+8
Feels like
+7
758 mmHg
81%
5.8
m/s
S
+9
2 May, Thursday. day, 11°; night, 8°; clear
3
+12
+8
3 May, fri
+12
+8
Feels like
+9
757 mmHg
79%
5.3
m/s
S
+10
3 May, Friday. day, 12°; night, 8°; overcast
4
+11
+9
4 May, sat
+11
+9
Feels like
+7
757 mmHg
81%
6.1
m/s
E
+9
4 May, Saturday. day, 11°; night, 9°; rain
5
+12
+8
5 May, sun
+12
+8
Feels like
+9
755 mmHg
79%
5.8
m/s
SW
+10
5 May, Sunday. day, 12°; night, 8°; partly cloudy
6
+13
+9
6 May, mon
+13
+9
Feels like
+9
755 mmHg
77%
6
m/s
S
+10
6 May, Monday. day, 13°; night, 9°; partly cloudy
7
+11
+10
7 May, tue
+11
+10
Feels like
+8
755 mmHg
79%
5.4
m/s
SE
+10
7 May, Tuesday. day, 11°; night, 10°; overcast
8
+11
+9
8 May, wed
+11
+9
Feels like
+7
754 mmHg
81%
6
m/s
SW
+9
8 May, Wednesday. day, 11°; night, 9°; rain
9
+13
+9
9 May, thu
+13
+9
Feels like
+10
755 mmHg
77%
6.4
m/s
W
+10
9 May, Thursday. day, 13°; night, 9°; rain
10
+13
+9
10 May, fri
+13
+9
Feels like
+9
756 mmHg
75%
6
m/s
N
+10
10 May, Friday. day, 13°; night, 9°; partly cloudy
11
+14
+10
11 May, sat
+14
+10
Feels like
+11
756 mmHg
75%
5.5
m/s
W
+11
11 May, Saturday. day, 14°; night, 10°; clear
12
+13
+9
12 May, sun
+13
+9
Feels like
+9
759 mmHg
68%
5.8
m/s
SW
+10
12 May, Sunday. day, 13°; night, 9°; partly cloudy
13
+12
+9
13 May, mon
+12
+9
Feels like
+8
758 mmHg
77%
6.1
m/s
SE
+10
13 May, Monday. day, 12°; night, 9°; clear
14
+13
+10
14 May, tue
+13
+10
Feels like
+10
756 mmHg
80%
7
m/s
SW
+11
14 May, Tuesday. day, 13°; night, 10°; rain
15
+14
+10
15 May, wed
+14
+10
Feels like
+10
756 mmHg
75%
6
m/s
SW
+11
15 May, Wednesday. day, 14°; night, 10°; rain
16
+14
+11
16 May, thu
+14
+11
Feels like
+11
756 mmHg
76%
6.3
m/s
SW
+11
16 May, Thursday. day, 14°; night, 11°; rain
17
+13
+11
17 May, fri
+13
+11
Feels like
+11
758 mmHg
74%
5.5
m/s
S
+11
17 May, Friday. day, 13°; night, 11°; overcast
18
+13
+10
18 May, sat
+13
+10
Feels like
+10
757 mmHg
80%
6.3
m/s
W
+11
18 May, Saturday. day, 13°; night, 10°; clear
19
+15
+11
19 May, sun
+15
+11
Feels like
+12
756 mmHg
74%
5.5
m/s
W
+12
19 May, Sunday. day, 15°; night, 11°; partly cloudy
20
+15
+12
20 May, mon
+15
+12
Feels like
+12
758 mmHg
73%
6
m/s
S
+12
20 May, Monday. day, 15°; night, 12°; clear
21
+13
+11
21 May, tue
+13
+11
Feels like
+11
757 mmHg
80%
4.8
m/s
S
+12
21 May, Tuesday. day, 13°; night, 11°; overcast
22
+13
+10
22 May, wed
+13
+10
Feels like
+11
757 mmHg
82%
4.9
m/s
S
+11
22 May, Wednesday. day, 13°; night, 10°; rain
23
+17
+12
23 May, thu
+17
+12
Feels like
+15
755 mmHg
80%
5.5
m/s
SW
+13
23 May, Thursday. day, 17°; night, 12°; rain
24
+15
+13
24 May, fri
+15
+13
Feels like
+12
757 mmHg
80%
6.4
m/s
NE
+12
24 May, Friday. day, 15°; night, 13°; rain
25
+16
+12
25 May, sat
+16
+12
Feels like
+13
756 mmHg
79%
6.5
m/s
SW
+13
25 May, Saturday. day, 16°; night, 12°; rain
26
+16
+13
26 May, sun
+16
+13
Feels like
+14
757 mmHg
77%
5.9
m/s
S
+13
26 May, Sunday. day, 16°; night, 13°; clear
27
+14
+12
27 May, mon
+14
+12
Feels like
+11
758 mmHg
82%
5.9
m/s
SE
+12
27 May, Monday. day, 14°; night, 12°; rain
28
+15
+11
28 May, tue
+15
+11
Feels like
+13
758 mmHg
83%
4.8
m/s
SE
+13
28 May, Tuesday. day, 15°; night, 11°; rain
29
+16
+12
29 May, wed
+16
+12
Feels like
+15
756 mmHg
80%
5.5
m/s
S
+13
29 May, Wednesday. day, 16°; night, 12°; rain
30
+16
+13
30 May, thu
+16
+13
Feels like
+14
757 mmHg
80%
5.4
m/s
S
+13
30 May, Thursday. day, 16°; night, 13°; rain
31
+17
+13
31 May, fri
+17
+13
Feels like
+15
755 mmHg
77%
6
m/s
S
+13
31 May, Friday. day, 17°; night, 13°; rain
1
+16
+14
1 June, sat
+16
+14
Feels like
+14
755 mmHg
75%
6
m/s
SW
+14
1 June, Saturday. day, 16°; night, 14°; clear
Average data for 10 years
Portland May
6
sunny days
15
days with precipitation
10
cloudy days
6 sunny days; 15 days with precipitation; 10 cloudy days;
77
%
air humidity
3.5
m/s
Wind
SW
70
mm of precipitation
(8% of annual average)
+11
°C
Water temperature
air humidity 77%; 70 millimeters of precipitation (8% of annual average); Wind south-westerly 3.5 Meters per second; Water temperature +11°
Weather graphs for May
Temperature
Water temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
S
S
S
E
SW
S
SE
SW
W
N
W
SW
SE
SW
SW
SW
S
W
W
S
S
S
SW
NE
SW
S
SE
SE
S
S
S
1
Average data for 10 years
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Daytime temperature
Night-time temperature
Cities near you
Boston
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Concord
Bangor
Berlin
Cities with similar weather in May
Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Palanga
Copenhagen
Gdansk
