Climate averages 1991–2020
Yono weather
in April.
A mild, wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Yono: daytime highs average 17.6°C and nights cool to about 7.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 105 mm of rain on roughly 11 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 05 min on an average April day.
The nearest other city in this atlas is Saitama (3 km away). In April its highs average 17.8°C, about as warm as Yono, with 105 mm of rain.
Among the 303 cities listed in Japan, Yono ranks joint 120th of 303 for the warmest April highs and joint 38th of 303 for the driest April (rainfall, lowest first). The mean April high of those 303 cities is 16.7°C; Yono is 0.9°C warmer than that mean.
From April to May, average highs rise by 4.6°C to 22.2°C, and monthly rainfall rises from 105 mm to 128 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Yono climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C-2.0°C | -2.0°C | 57 | 6.1 | 10.010 h |
| February | 8.9°C-1.2°C | -1.2°C | 55 | 6.9 | 10.911 h |
| March | 12.5°C2.3°C | 2.3°C | 99 | 10.8 | 11.912 h |
| April, selected | 17.6°C7.6°C | 7.6°C | 105 | 11.1 | 13.113 h |
| May | 22.2°C13.1°C | 13.1°C | 128 | 12.2 | 14.014 h |
| June | 24.9°C17.5°C | 17.5°C | 152 | 14.1 | 14.515 h |
| July | 28.5°C21.6°C | 21.6°C | 159 | 14.6 | 14.314 h |
| August | 29.9°C22.9°C | 22.9°C | 118 | 12.3 | 13.514 h |
| September | 26.0°C19.4°C | 19.4°C | 171 | 13.7 | 12.412 h |
| October | 20.5°C13.2°C | 13.2°C | 190 | 12.6 | 11.311 h |
| November | 15.3°C6.7°C | 6.7°C | 81 | 9.2 | 10.310 h |
| December | 10.3°C1.0°C | 1.0°C | 52 | 6.5 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Saitama in AprilJapan · 3 kmHigh 17.8°C · Low 7.9°C · 105 mm rain
- Niiza in AprilJapan · 10 kmHigh 17.5°C · Low 7.9°C · 123 mm rain
- Ageo in AprilJapan · 10 kmHigh 17.7°C · Low 7.5°C · 106 mm rain
- Kawaguchi in AprilJapan · 11 kmHigh 17.7°C · Low 8.3°C · 113 mm rain
- Kawagoe in AprilJapan · 14 kmHigh 17.4°C · Low 7.2°C · 106 mm rain
- Koshigaya in AprilJapan · 14 kmHigh 17.8°C · Low 8.1°C · 105 mm rain
- Kasukabe in AprilJapan · 15 kmHigh 18.0°C · Low 7.7°C · 105 mm rain
- Sōka in AprilJapan · 16 kmHigh 17.6°C · Low 8.5°C · 113 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Yono) is explained once on the Yono year overview and on the Sources, method and limits page.
Saitama, Koshigaya and Kasukabe lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.