10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
8°
Feels like 8°
Wind↑ NNW 5 km/h
Humidity 71 %
Afternoon
Clear sky
17°
Feels like 17°
Wind↑ WSW 2 km/h
Gusts11 km/h
Humidity 39 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
9°
Feels like 8°
Wind↑ N 6 km/h
Humidity 73 %
Afternoon
Mainly clear
17°
Feels like 17°
Wind↑ SSW 3 km/h
Humidity 34 %
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
10°
Feels like 9°
Wind↑ N 6 km/h
Humidity 65 %
Afternoon
Clear sky
19°
Feels like 19°
Wind↑ SW 3 km/h
Humidity 40 %
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
11°
Feels like 11°
Wind↑ N 6 km/h
Humidity 68 %
Afternoon
Clear sky
20°
Feels like 20°
Wind↑ SSE 2 km/h
Humidity 44 %
Okayama 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)
Okayama climate: what a normal year looks like
The hottest stretch is August, when afternoons average 31 °C; the coldest is January, when nights average 3 °C. Between those two months the average temperature changes by 22 °C.
Typical highs of 30 °C or more are reached in August only, at 31 °C.
From 14 h 28 min of daylight in late June to 9 h 50 min in late December.
Forecast highs for the coming week average 19 °C, 4 °C cooler than a normal October (23 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
9 °C
3 °C
53 mm
Feb
10 °C
4 °C
60 mm
Mar
13 °C
6 °C
99 mm
Apr
18 °C
11 °C
113 mm
May
23 °C
16 °C
126 mm
Jun
25 °C
20 °C
180 mm
Jul
30 °C
24 °C
181 mm
Aug
31 °C
25 °C
110 mm
Sep
28 °C
22 °C
169 mm
Oct
23 °C
15 °C
120 mm
Nov
18 °C
10 °C
59 mm
Dec
12 °C
5 °C
55 mm
Whole year
20 °C
13 °C
1,320 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 34.65° N, 133.93° 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 Okayama: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.55µg/m³
PM107µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Okayama
Rain observed over the last two hours by official weather radars around Okayama, 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 Okayama yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Okayama
Waning gibbous
79 % illuminated · 19.3 days
Rise 15:25 Set 05:49
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 Okayama
Curious about the weather in Okayama on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Okayama weather at a glance
This page gathers everything about the weather in Okayama, Okayama: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “drizzle”, it is 16 °C (feels like 16 °C) and the wind blows at 2 km/h.
Expected range today: 13 °C to 20 °C and around 5 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 Okayama 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.
