Kawagoe climate
Kawagoe is warmest in August, with average highs of 30 °C, and coldest in January, when nights average -2.0 °C. October is the wettest month (201 mm) and December the driest (50 mm). Figures are 1991–2020 climate normals.
Across a full year Kawagoe averages 1,432 mm of rain, 95 days above 25 °C and 63 days below freezing.
Japan · population 354,571 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 30 °C
- Coldest month January -2.0 °C
- Driest month December 50 mm
- Wettest month October 201 mm
- Least cloud January 37 % cloud
- Hottest on record July 40 °C
- Coldest on record January -16 °C
What to expectKawagoe through the year
Kawagoe has a clear annual cycle: average daily highs run from 7.8 °C in January to 30 °C in August, a swing of 23 °C in mean temperature across the year.
Counted across a normal year, 95 days a year reach 25 °C, 30 of them reach 30 °C, 63 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in July.
Rain is strongly seasonal. October averages 201 mm against 50 mm in December — 4.1 times as much. Planning around the dry months matters more here than planning around temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 7.8 °C | 58 mm | 37 % |
| February | 8.8 °C | 57 mm | 45 % |
| March | 12.4 °C | 95 mm | 55 % |
| April | 17.6 °C | 107 mm | 59 % |
| May | 22.2 °C | 130 mm | 68 % |
| June | 24.8 °C | 167 mm | 80 % |
| July | 28.4 °C | 166 mm | 76 % |
| August | 29.7 °C | 131 mm | 68 % |
| September | 25.8 °C | 195 mm | 69 % |
| October | 20.3 °C | 201 mm | 61 % |
| November | 15.2 °C | 74 mm | 49 % |
| December | 10.2 °C | 50 mm | 38 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 7.8 °C | -2.0 °C | 2.4 °C | 17.6 °C | -16.1 °C | 0 | 0 | 23 |
| February | 8.8 °C | -1.1 °C | 3.4 °C | 21.6 °C | -13.9 °C | 0 | 0 | 18 |
| March | 12.4 °C | 2.5 °C | 7.1 °C | 25.1 °C | -7.9 °C | 0 | 0 | 8 |
| April | 17.6 °C | 7.9 °C | 12.5 °C | 28.8 °C | -2.7 °C | 1 | 0 | 1 |
| May | 22.2 °C | 13.1 °C | 17.4 °C | 32.6 °C | 3.2 °C | 6 | 0 | 0 |
| June | 24.8 °C | 17.6 °C | 20.9 °C | 34.3 °C | 9.7 °C | 14 | 1 | 0 |
| July | 28.4 °C | 21.6 °C | 24.7 °C | 39.5 °C | 14.6 °C | 25 | 11 | 0 |
| August | 29.7 °C | 22.7 °C | 25.8 °C | 36.8 °C | 15.7 °C | 28 | 15 | 0 |
| September | 25.8 °C | 19.1 °C | 22.1 °C | 35.6 °C | 8.7 °C | 18 | 3 | 0 |
| October | 20.3 °C | 13.1 °C | 16.4 °C | 31.3 °C | 3.1 °C | 2 | 0 | 0 |
| November | 15.2 °C | 6.6 °C | 10.5 °C | 23.5 °C | -5.6 °C | 0 | 0 | 1 |
| December | 10.2 °C | 0.8 °C | 5.1 °C | 23.1 °C | -10.7 °C | 0 | 0 | 13 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 58 mm | 6 | 10.0 h/day | 37 % | 68 % | 18 km/h |
| February | 57 mm | 7 | 11 h/day | 45 % | 67 % | 19 km/h |
| March | 95 mm | 11 | 12 h/day | 55 % | 70 % | 20 km/h |
| April | 107 mm | 11 | 13 h/day | 59 % | 72 % | 20 km/h |
| May | 130 mm | 11 | 14 h/day | 68 % | 75 % | 18 km/h |
| June | 167 mm | 15 | 15 h/day | 80 % | 82 % | 15 km/h |
| July | 166 mm | 14 | 14 h/day | 76 % | 84 % | 14 km/h |
| August | 131 mm | 12 | 14 h/day | 68 % | 82 % | 14 km/h |
| September | 195 mm | 14 | 12 h/day | 69 % | 81 % | 14 km/h |
| October | 201 mm | 12 | 11 h/day | 61 % | 80 % | 14 km/h |
| November | 74 mm | 8 | 10 h/day | 49 % | 77 % | 14 km/h |
| December | 50 mm | 6 | 9.7 h/day | 38 % | 71 % | 16 km/h |
How Kawagoe compares
The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.
| Destination | Summer high | Winter low | Rain per year | Days above 25 °C |
|---|---|---|---|---|
| Kawagoe | 30 °C | -2.0 °C | 1,432 mm | 95 |
| Niiza · Japan | 30 °C | -1.3 °C | 1,599 mm | 97 |
| Tokorozawa · Japan | 29 °C | -2.0 °C | 1,616 mm | 88 |
| Saitama · Japan | 30 °C | -1.4 °C | 1,396 mm | 100 |
Planning a trip? See the best time to visit Kawagoe.
QuestionsCommon questions about Kawagoe’s climate
When is the best time to visit Kawagoe?
That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September sit closest to 20 °C on average, August is the warmest month and December the driest. The month-by-month table above has the full picture.
How hot does Kawagoe get?
In August, the warmest month, daily highs average 30 °C. About 30 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.
How cold does it get in winter?
Nights average -2.0 °C in January, the coldest month. A normal year has 63 nights below freezing.
Which month is wettest in Kawagoe?
October, averaging 201 mm over 12 days with rain. The driest month is December with 50 mm. The year as a whole averages 1,432 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Kawagoe rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.