21.09
mon
mon
Day
73°F
SW 2 mph
Precip.
5%
5%
Night
55°F
E 4 mph
Precip.
8%
8%
22.09
tue
tue
Day
64°F
SE 9 mph
Precip.
13%
13%
Night
52°F
SE 4 mph
Precip.
14%
14%
23.09
wed
wed
Day
70°F
SW 3 mph
Precip.
1%
1%
Night
55°F
NE 6 mph
Precip.
27%
27%
24.09
thu
thu
Day
64°F
E 5 mph
Precip.
58%
58%
Night
48°F
E 4 mph
Precip.
34%
34%
25.09
fri
fri
Day
68°F
N 9 mph
Precip.
16%
16%
Night
59°F
E 4 mph
Precip.
52%
52%
26.09
sat
sat
Day
55°F
SE 8 mph
Precip.
20%
20%
Night
50°F
SE 3 mph
Precip.
35%
35%
27.09
sun
sun
Day
63°F
NW 7 mph
Precip.
2%
2%
Night
55°F
NW 14 mph
Precip.
27%
27%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 71.6°F. The highest and lowest sea temperatures during the month were 74.8°F and 69.6°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 65.1°F. The highest and lowest sea temperatures during the month were 70.5°F and 58.6°F.
Air temperature in Sapporo, °F
Precipitation total in Sapporo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sapporo
Sapporo on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Sapporo
Local time: 05:52
September 21, monday
0600
57°F
NE
2 mph
2 mph
0900
66°F
NW
2 mph
2 mph
1200
73°F
SW
2 mph
2 mph
1500
72°F
SW
6 mph
6 mph
1800
59°F
SE
2 mph
2 mph
2100
57°F
E
4 mph
4 mph
September 22, tuesday
0000
55°F
E
4 mph
4 mph
0300
57°F
SE
5 mph
5 mph
