Climate averages 1991–2020
Saku weather
in June.
A warm, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Saku: daytime highs average 23.4°C and nights cool to about 15.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 197 mm of rain on roughly 20 days, which makes June a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 35 min on an average June day.
The nearest other city in this atlas is Ueda (27 km away). In June its highs average 24.1°C, 0.7°C warmer than Saku, with 168 mm of rain.
Among the 303 cities listed in Japan, Saku ranks joint 240th of 303 for the warmest June highs and 170th of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Saku is 1.0°C cooler than that mean.
From June to July, average highs rise by 3.5°C to 27.0°C, and monthly rainfall rises from 197 mm to 220 mm.
The annual picture
June 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
Saku climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.9°C-4.4°C | -4.4°C | 55 | 7.6 | 10.010 h |
| February | 4.8°C-4.4°C | -4.4°C | 58 | 8.1 | 10.811 h |
| March | 9.0°C-0.9°C | -0.9°C | 99 | 11.7 | 11.912 h |
| April | 15.6°C4.8°C | 4.8°C | 102 | 12.3 | 13.113 h |
| May | 20.6°C10.6°C | 10.6°C | 131 | 14.9 | 14.114 h |
| June, selected | 23.4°C15.3°C | 15.3°C | 197 | 19.8 | 14.615 h |
| July | 27.0°C19.3°C | 19.3°C | 220 | 21.6 | 14.414 h |
| August | 27.8°C20.2°C | 20.2°C | 174 | 21.5 | 13.514 h |
| September | 23.7°C16.4°C | 16.4°C | 187 | 17.6 | 12.412 h |
| October | 18.1°C10.1°C | 10.1°C | 161 | 12.9 | 11.311 h |
| November | 12.7°C3.9°C | 3.9°C | 64 | 7.8 | 10.310 h |
| December | 6.9°C-1.1°C | -1.1°C | 48 | 7.9 | 9.710 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
June in nearby cities
- Ueda in JuneJapan · 27 kmHigh 24.1°C · Low 15.1°C · 168 mm rain
- Matsumoto in JuneJapan · 46 kmHigh 23.8°C · Low 15.0°C · 224 mm rain
- Takasaki in JuneJapan · 50 kmHigh 23.4°C · Low 15.7°C · 239 mm rain
- Azumino in JuneJapan · 54 kmHigh 23.9°C · Low 15.2°C · 224 mm rain
- Shibukawa in JuneJapan · 55 kmHigh 23.7°C · Low 16.2°C · 178 mm rain
- Nagano in JuneJapan · 55 kmHigh 23.7°C · Low 14.7°C · 178 mm rain
- Maebashi in JuneJapan · 57 kmHigh 23.8°C · Low 16.2°C · 178 mm rain
- Kai in JuneJapan · 59 kmHigh 24.9°C · Low 16.7°C · 177 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 Saku) is explained once on the Saku year overview and on the Sources, method and limits page.