S
M
T
W
T
F
S
26
85°
77°
27
85°
76°
28
87°
74°
29
85°
74°
30
87°
75°
1
85°
76°
2
90°
81°
3
89°
79°
4
90°
80°
5
N/A
6
88°
75°
7
88°
74°
8
89°
75°
9
90°
76°
10
90°
75°
11
89°
74°
12
89°
76°
13
90°
75°
14
89°
74°
15
90°
75°
16
91°
75°
17
92°
74°
18
85°
74°
19
86°
74°
20
86°
75°
21
87°
74°
22
86°
74°
23
86°
75°
24
87°
75°
25
86°
74°
26
86°
74°
27
87°
74°
28
86°
72°
29
87°
74°
30
86°
73°
31
85°
74°
1
85°
74°
2
86°
73°
3
85°
74°
4
85°
74°
5
86°
73°
6
85°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Port Moresby
Port Moresby's May 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 72° and 76°. The average high for May is 87° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Port Moresby. See also: June | July | August.
