Climate guideThirty-year normals for Kawaguchi
Kawaguchi climate by month
Humid subtropical · CfaBest Apr–May · Oct
Annual mean15°day and night
Seasonal swing23°warmest vs coolest
Precipitation1,375 mm134 wet days a year
35.81° N, 139.71° EElevation 6 mUTC+9 · Japan Standard Time
When to goKawaguchi · weather score
Best timeApr–May · Oct
October: high / low21° / 14°
iSummary
What the weather is like
Kawaguchi has a humid subtropical climate (Köppen Cfa): rain spread through the year and no real dry season.
The warmest month is August, when afternoons average 30° and nights 24°. January is the coolest month, with highs of 8° and lows of -1°. The difference between the warmest and the coolest month is about 23°, a large swing typical of continental interiors.
About 1,375 mm of precipitation falls in an average year. July is the wettest month (144 mm, 17 wet days) and January the driest (45 mm, 5 wet days). Cloud cover ranges from 26% in December to 60% in June.
Compared with Tokyo, the capital, Kawaguchi is 0.7° warmer on a August afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 30° · August
- Coldest nights
- -1° · January
- Wettest month
- July
- Driest month
- January
- Clearest skies
- December · 26% cloud
- Longest day
- 14 h 34 min
- Shortest day
- 9 h 45 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 8° | 9° | 12° | 18° | 22° | 25° | 28° | 30° | 26° | 21° | 16° | 11° |
| Average low | -1° | 0° | 3° | 9° | 14° | 18° | 22° | 24° | 20° | 14° | 8° | 2° |
| Precipitation | 45 mm | 48 mm | 94 mm | 111 mm | 123 mm | 152 mm | 144 mm | 158 mm | 199 mm | 178 mm | 79 mm | 44 mm |
| Wet days (≥1 mm) | 5.2 | 6.5 | 10.3 | 11.1 | 12.1 | 14.9 | 16.6 | 13.9 | 14.3 | 13.1 | 9 | 6.7 |
| Cloud cover | 27% | 32% | 42% | 45% | 51% | 60% | 53% | 41% | 47% | 42% | 36% | 26% |
| Daylight | 9h 59 | 10h 53 | 11h 55 | 13h 04 | 14h 02 | 14h 34 | 14h 22 | 13h 33 | 12h 27 | 11h 20 | 10h 18 | 9h 45 |
| Month score | 46 | 42 | 40 | 65 | 63 | 54 | 44 | 41 | 55 | 64 | 63 | 46 |
ivMonth by month
Kawaguchi in every month
January46
8° / -1°
45 mm · 5.2 wet days
February42
9° / 0°
48 mm · 6.5 wet days
March40
12° / 3°
94 mm · 10.3 wet days
April65
18° / 9°
111 mm · 11.1 wet days
May63
22° / 14°
123 mm · 12.1 wet days
June54
25° / 18°
152 mm · 14.9 wet days
July44
28° / 22°
144 mm · 16.6 wet days
August41
30° / 24°
158 mm · 13.9 wet days
September55
26° / 20°
199 mm · 14.3 wet days
October64
21° / 14°
178 mm · 13.1 wet days
November63
16° / 8°
79 mm · 9 wet days
December46
11° / 2°
44 mm · 6.7 wet days