10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Overcast
11°
Feels like 11°
Wind↑ WNW 35 km/h
Humidity 56 %
💧 0.1 mm
Afternoon
Drizzle
13°
Feels like 13°
Wind↑ W 21 km/h
Humidity 52 %
💧 0.4 mm
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Light rain
12°
Feels like 12°
Wind↑ SSW 26 km/h
Humidity 69 %
💧 1.4 mm
Afternoon
Clear sky
16°
Feels like 16°
Wind↑ SW 24 km/h
Humidity 64 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
13°
Feels like 13°
Wind↑ SSE 11 km/h
Humidity 67 %
Afternoon
Partly cloudy
15°
Feels like 15°
Wind↑ SSW 10 km/h
Humidity 48 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
14°
Feels like 14°
Wind↑ SSW 18 km/h
Humidity 64 %
Afternoon
Clear sky
16°
Feels like 16°
Wind↑ N 2 km/h
Humidity 62 %
Niigata forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Niigata climate: what a normal year looks like
The hottest stretch is August, when afternoons average 30 °C; the coldest is January, when nights average 0 °C. Between those two months the average temperature changes by 24 °C.
A normal year brings roughly 1,950 mm of rain — more than 87% of the towns of 20,000+ people we compared it with.
From 14 h 47 min of daylight in late June to 9 h 32 min in late December.
There is no real dry season: monthly rainfall stays between 108 mm and 245 mm on average.
Forecast highs for the coming week average 17 °C, 3 °C cooler than a normal October (20 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
4 °C
1 °C
197 mm
Feb
6 °C
1 °C
138 mm
Mar
9 °C
3 °C
137 mm
Apr
15 °C
7 °C
108 mm
May
20 °C
13 °C
112 mm
Jun
24 °C
18 °C
142 mm
Jul
28 °C
22 °C
245 mm
Aug
30 °C
24 °C
176 mm
Sep
26 °C
19 °C
155 mm
Oct
20 °C
13 °C
160 mm
Nov
14 °C
8 °C
171 mm
Dec
8 °C
3 °C
206 mm
Whole year
17 °C
11 °C
1,950 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 37.92° N, 139.04° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Niigata: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.55µg/m³
PM108µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Niigata
Rain observed over the last two hours by official weather radars around Niigata, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Niigata yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Niigata
Waning gibbous
79 % illuminated · 19.3 days
Rise 14:53 Set 05:39
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Wed11/113%
Moonrise and moonset in local time (Asia/Tokyo); phase and lit fraction from a synodic calculation.
Look up a past day in Niigata
Curious about the weather in Niigata on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Niigata weather at a glance
This page gathers everything about the weather in Niigata, Niigata: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 16 °C (feels like 16 °C) and the wind blows at 20 km/h.
Expected range today: 15 °C to 18 °C and around 28 mm of rain. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the Niigata forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
