Suginami climate: monthly averages: annual mean temperature 14.8 C; warmest month Aug (26.9 C); coldest month Jan (2.8 C).
Annual mean temperature: 14.8 C
Warmest month: Aug (26.9 C)
Coldest month: Jan (2.8 C)
Wettest month: Oct (7.07 mm/day)
All-time record high: 37.8 C
All-time record low: -5.1 C
Suginami’s climate features a mild annual average of **14.8°C**, with warm summers peaking in August at **26.9°C** and chilly winters dipping to **2.8°C** in January. Rainfall averages **1,518 mm yearly**, concentrated in October (7.07 mm/day). Extreme temperatures range from **-5.1°C** to **37.8°C**, reflecting seasonal contrasts.
Annual mean temperature 14.8 C
Warmest month Aug (26.9 C)
Coldest month Jan (2.8 C)
Wettest month Oct (7.07 mm/day)
All-time record high 37.8 C
All-time record low -5.1 C
Annual precipitation 1,518 mm / year
Coordinates 36.2013, 140.28406
Population 588,354
Average monthly temperature and rainfall in Suginami
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
2.8
2.06
17.6
-5.1
Feb
3.9
2.05
22.8
-5.1
Mar
7.5
3.29
24.6
-4.6
Apr
12.9
4.02
29.9
-2.4
May
18.1
4.39
33.9
3.8
Jun
21.9
5.37
35.7
9.1
Jul
25.8
5.06
37.8
13.8
Aug
26.9
4.57
37.7
15.5
Sep
23.1
6.60
36.5
8.6
Oct
17.2
7.07
32.2
4.0
Nov
11.2
3.17
24.9
-2.2
Dec
5.3
2.15
22.9
-4.1
What the Suginami climate table shows
Values are multi-decadal climatological averages for the 36.2013, 140.28406 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
**What’s Suginami’s wettest month?**?
October, with daily rainfall averaging **7.07 mm**.
**How does Suginami’s summer compare to winter?**?
Summers are warm (up to **26.9°C**), while winters are cool (down to **2.8°C**).