10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
9°
Feels like 7°
Wind↑ SSW 9 km/h
Gusts16 km/h
Humidity 60 %
Evening
Partly cloudy
7°
Feels like 7°
Wind↑ NE 4 km/h
Humidity 82 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
11°
Feels like 11°
Wind↑ W 2 km/h
Humidity 69 %
Evening
Rain showers
7°
Feels like 6°
Wind↑ NE 5 km/h
Humidity 92 %
💧 0.2 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
10°
Feels like 10°
Wind↑ WSW 2 km/h
Humidity 76 %
Evening
Clear sky
7°
Feels like 6°
Wind↑ SSE 6 km/h
Humidity 90 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
10°
Feels like 10°
Wind↑ SSW 6 km/h
Humidity 72 %
Evening
Clear sky
8°
Feels like 6°
Wind↑ S 8 km/h
Humidity 85 %
Kōriyama 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)
Kōriyama climate: what a normal year looks like
The hottest stretch is August, when afternoons average 28 °C; the coldest is January, when nights average −3 °C. Between those two months the average temperature changes by 25 °C.
Nights typically freeze from December to February, the coldest averaging −3 °C in January.
From 14 h 44 min of daylight in late June to 9 h 35 min in late December.
Forecast highs for the coming week average 14 °C, 4 °C cooler than a normal October (18 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
3 °C
−3 °C
71 mm
Feb
4 °C
−3 °C
60 mm
Mar
8 °C
0 °C
94 mm
Apr
14 °C
5 °C
101 mm
May
20 °C
11 °C
107 mm
Jun
23 °C
15 °C
128 mm
Jul
26 °C
20 °C
181 mm
Aug
28 °C
21 °C
139 mm
Sep
24 °C
17 °C
164 mm
Oct
18 °C
10 °C
140 mm
Nov
12 °C
4 °C
74 mm
Dec
6 °C
−1 °C
62 mm
Whole year
15 °C
8 °C
1,320 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 37.40° N, 140.38° 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 Kōriyama: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.53µg/m³
PM103µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Kōriyama
Rain observed over the last two hours by official weather radars around Kōriyama, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Kōriyama yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Kōriyama
Waning gibbous
79 % illuminated · 19.3 days
Rise 14:49 Set 05:32
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 Kōriyama
Curious about the weather in Kōriyama on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Kōriyama weather at a glance
This page gathers everything about the weather in Kōriyama, Fukushima: 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 10 °C (feels like 9 °C) and the wind blows at 8 km/h.
Expected range today: 9 °C to 16 °C and a dry sky. 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 Kōriyama 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.
