Climate averages 1991–2020
Nagaoka weather
in June.
A warm, wet month: the 4th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Nagaoka: daytime highs average 25.1°C and nights cool to about 15.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 115 mm of rain on roughly 13 days, which makes June a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 42 min on an average June day.
The nearest other city in this atlas is Sanjō (21 km away). In June its highs average 24.7°C, about as warm as Nagaoka, with 143 mm of rain.
Among the 303 cities listed in Japan, Nagaoka ranks joint 110th of 303 for the warmest June highs and joint 19th of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Nagaoka is 0.7°C warmer than that mean.
From June to July, average highs rise by 3.0°C to 28.1°C, and monthly rainfall rises from 115 mm to 207 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
Nagaoka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.8°C-2.5°C | -2.5°C | 179 | 25.1 | 9.910 h |
| February | 4.5°C-2.7°C | -2.7°C | 127 | 20.6 | 10.811 h |
| March | 8.9°C-0.4°C | -0.4°C | 126 | 19.6 | 11.912 h |
| April | 15.7°C4.8°C | 4.8°C | 94 | 14.3 | 13.113 h |
| May | 21.4°C10.6°C | 10.6°C | 94 | 11.9 | 14.214 h |
| June, selected | 25.1°C15.7°C | 15.7°C | 115 | 12.5 | 14.715 h |
| July | 28.1°C20.4°C | 20.4°C | 207 | 16.1 | 14.514 h |
| August | 29.8°C21.6°C | 21.6°C | 146 | 14.1 | 13.614 h |
| September | 25.6°C17.7°C | 17.7°C | 144 | 14.0 | 12.512 h |
| October | 19.5°C11.3°C | 11.3°C | 143 | 14.8 | 11.311 h |
| November | 13.3°C5.3°C | 5.3°C | 145 | 18.2 | 10.210 h |
| December | 7.0°C0.2°C | 0.2°C | 181 | 23.7 | 9.610 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
- Sanjō in JuneJapan · 21 kmHigh 24.7°C · Low 15.8°C · 143 mm rain
- Tsubame in JuneJapan · 25 kmHigh 23.9°C · Low 16.2°C · 117 mm rain
- Kashiwazaki in JuneJapan · 28 kmHigh 24.8°C · Low 16.1°C · 126 mm rain
- Niigata in JuneJapan · 55 kmHigh 23.1°C · Low 16.5°C · 123 mm rain
- Jōetsu in JuneJapan · 64 kmHigh 24.4°C · Low 16.4°C · 115 mm rain
- Shibata in JuneJapan · 70 kmHigh 23.9°C · Low 15.6°C · 155 mm rain
- Aizu-Wakamatsu in JuneJapan · 97 kmHigh 23.4°C · Low 14.9°C · 117 mm rain
- Nikkō in JuneJapan · 103 kmHigh 21.9°C · Low 14.4°C · 228 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 Nagaoka) is explained once on the Nagaoka year overview and on the Sources, method and limits page.