16.05
sat
sat
Day
73°F
NE 10 mph
Precip.
0%
0%
Night
63°F
NE 12 mph
Precip.
0%
0%
17.05
sun
sun
Day
79°F
E 11 mph
Precip.
0%
0%
Night
63°F
SW 6 mph
Precip.
0%
0%
18.05
mon
mon
Day
66°F
W 8 mph
Precip.
0%
0%
Night
57°F
N 6 mph
Precip.
0%
0%
19.05
tue
tue
Day
86°F
E 11 mph
Precip.
0%
0%
Night
73°F
NE 9 mph
Precip.
0%
0%
20.05
wed
wed
Day
90°F
E 16 mph
Precip.
0%
0%
Night
61°F
E 10 mph
Precip.
0%
0%
21.05
thu
thu
Day
61°F
NE 7 mph
Precip.
0%
0%
Night
54°F
NE 6 mph
Precip.
0%
0%
22.05
fri
fri
Day
61°F
NW 2 mph
Precip.
0%
0%
Night
52°F
NE 7 mph
Precip.
0%
0%
23.05
sat
sat
Day
55°F
NW 5 mph
Precip.
100%
100%
Night
48°F
W 12 mph
Precip.
100%
100%
24.05
sun
sun
Day
48°F
SW 9 mph
Precip.
100%
100%
Night
48°F
SW 7 mph
Precip.
69%
69%
25.05
mon
mon
Day
52°F
SW 8 mph
Precip.
49%
49%
Night
52°F
W 5 mph
Precip.
70%
70%
26.05
tue
tue
Day
57°F
W 9 mph
Precip.
0%
0%
Night
55°F
N 3 mph
Precip.
100%
100%
27.05
wed
wed
Day
66°F
NE 6 mph
Precip.
85%
85%
Night
59°F
E 7 mph
Precip.
0%
0%
28.05
thu
thu
Day
64°F
E 6 mph
Precip.
0%
0%
Night
55°F
E 8 mph
Precip.
0%
0%
29.05
fri
fri
Day
72°F
SE 6 mph
Precip.
0%
0%
Night
64°F
S 5 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 50.9°F. The highest and lowest sea temperatures during the month were 53.2°F and 48.2°F.
Air temperature in Boston, °F
Precipitation total in Boston, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Boston
Boston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boston
Local time: 20:08
May 16, saturday
2100
66°F
NE
12 mph
12 mph
May 17, sunday
0000
63°F
NE
12 mph
12 mph
0300
63°F
NE
11 mph
11 mph
0600
61°F
NE
7 mph
7 mph
0900
70°F
E
8 mph
8 mph
1200
79°F
E
11 mph
11 mph
1500
82°F
SE
15 mph
15 mph
1800
79°F
E
11 mph
11 mph
