Climate averages 1991–2020
Nagaoka weather
in March.
A cool, wet month: the 9th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Nagaoka: daytime highs average 8.9°C and nights cool to about -0.4°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 126 mm of rain on roughly 20 days, which makes March a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 56 min on an average March day.
The nearest other city in this atlas is Sanjō (21 km away). In March its highs average 9.0°C, about as warm as Nagaoka, with 150 mm of rain.
Among the 303 cities listed in Japan, Nagaoka ranks joint 254th of 303 for the warmest March highs and joint 191st of 303 for the driest March (rainfall, lowest first). The mean March high of those 303 cities is 11.5°C; Nagaoka is 2.6°C cooler than that mean.
From March to April, average highs rise by 6.8°C to 15.7°C, and monthly rainfall falls from 126 mm to 94 mm.
The annual picture
March 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, selected | 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 | 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
March in nearby cities
- Sanjō in MarchJapan · 21 kmHigh 9.0°C · Low 0.0°C · 150 mm rain
- Tsubame in MarchJapan · 25 kmHigh 8.9°C · Low 1.0°C · 121 mm rain
- Kashiwazaki in MarchJapan · 28 kmHigh 8.8°C · Low 0.2°C · 142 mm rain
- Niigata in MarchJapan · 55 kmHigh 8.6°C · Low 1.8°C · 110 mm rain
- Jōetsu in MarchJapan · 64 kmHigh 8.3°C · Low 0.6°C · 145 mm rain
- Shibata in MarchJapan · 70 kmHigh 7.9°C · Low -0.3°C · 145 mm rain
- Aizu-Wakamatsu in MarchJapan · 97 kmHigh 6.6°C · Low -1.1°C · 101 mm rain
- Nikkō in MarchJapan · 103 kmHigh 8.1°C · Low -1.8°C · 112 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.