Sendai Weather

Sendai has a humid subtropical climate , which features warm and wet summers, and cool and dry winters. Sendai summers are not as hot as Tokyo to the south, while the winters are much milder than Sapporo to the north, but retains significant seasonal differences in temperature and rainfall. Extremes range from −11.7 to 37.2 °C (10.9 to 99.0 °F). Of Japan’s prefectural capitals, Sendai experiences the fewest days of extreme temperatures (highs outside 0–30 °C (32–86 °F)) at 19.6 per year, compared to Tokyo’s average of 49.

Winters are cool and relatively dry, with January temperatures averaging 1.5 °C (34.7 °F). Snowfall is much lower than cities on the Sea of Japan coast, such as Niigata and Tottori. Summers are very warm and much of the year’s precipitation is delivered at this time, with an August average of 24.1 °C (75.4 °F). The city is rarely hit by typhoons, and experiences only 6 days with more than 10 centimetres (4 in) of rainfall on average. Sendai’s monsoon season usually begins in late April to early October, which is later than in most cities in Japan. During this season, cold winds from the Okhotsk air mass, called “Yamase”, blow in and depress daytime highs.

Average Temperature
Jan
41 °F
5 °C
Feb
45 °F
7 °C
Mar
50 °F
10 °C
Apr
57 °F
14 °C
May
70 °F
21 °C
Jun
70 °F
21 °C
Jul
75 °F
24 °C
Aug
82 °F
28 °C
Sep
75 °F
24 °C
Oct
64 °F
18 °C
Nov
55 °F
13 °C
Dec
45 °F
7 °C
Humidity
Jan
60%
Feb
53%
Mar
56%
Apr
55%
May
58%
Jun
82%
Jul
85%
Aug
84%
Sep
74%
Oct
72%
Nov
63%
Dec
64%
Rain
Jan
12mm
Feb
16mm
Mar
43mm
Apr
36mm
May
54mm
Jun
255mm
Jul
63mm
Aug
74mm
Sep
39mm
Oct
311mm
Nov
16mm
Dec
27mm
Clouds
Jan
52%
Feb
46%
Mar
47%
Apr
51%
May
41%
Jun
88%
Jul
91%
Aug
73%
Sep
67%
Oct
82%
Nov
49%
Dec
48%
Air quality US AQI
Jan
36
Feb
45
Mar
50
Apr
53
May
56
Jun
48
Jul
53
Aug
48
Sep
43
Oct
42
Nov
39
Dec
35
Sun
Jan
2UVI
Feb
3UVI
Mar
3UVI
Apr
5UVI
May
6UVI
Jun
5UVI
Jul
5UVI
Aug
5UVI
Sep
5UVI
Oct
4UVI
Nov
3UVI
Dec
2UVI