10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Overcast
12°
Feels like 12°
Wind↑ N 12 km/h
Humidity 47 %
Afternoon
Mainly clear
13°
Feels like 13°
Wind↑ ESE 10 km/h
Humidity 47 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Overcast
13°
Feels like 13°
Wind↑ N 12 km/h
Humidity 53 %
Afternoon
Partly cloudy
18°
Feels like 18°
Wind↑ SE 3 km/h
Humidity 36 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
14°
Feels like 14°
Wind↑ N 10 km/h
Humidity 63 %
Afternoon
Partly cloudy
19°
Feels like 19°
Wind↑ NNW 1 km/h
Humidity 46 %
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↑ N 10 km/h
Gusts19 km/h
Humidity 69 %
Afternoon
Clear sky
20°
Feels like 20°
Wind↑ NE 11 km/h
Humidity 20 %
Ichikawa forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +1.5° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Ichikawa climate: what a normal year looks like
The hottest stretch is August, when afternoons average 30 °C; the coldest is January, when nights average 2 °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 30 °C.
A normal year brings roughly 1,520 mm of rain — more than 76% of the towns of 20,000+ people we compared it with.
From 14 h 34 min of daylight in late June to 9 h 44 min in late December.
Forecast highs for the coming week average 19 °C, 2 °C cooler than a normal October (21 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
8 °C
2 °C
73 mm
Feb
10 °C
3 °C
72 mm
Mar
13 °C
6 °C
120 mm
Apr
18 °C
10 °C
118 mm
May
22 °C
16 °C
136 mm
Jun
25 °C
19 °C
168 mm
Jul
29 °C
23 °C
154 mm
Aug
30 °C
25 °C
119 mm
Sep
27 °C
21 °C
188 mm
Oct
21 °C
16 °C
211 mm
Nov
16 °C
10 °C
99 mm
Dec
12 °C
4 °C
64 mm
Whole year
19 °C
13 °C
1,520 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 35.73° N, 139.91° 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 Ichikawa: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.510µg/m³
PM1010µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Ichikawa
Rain observed over the last two hours by official weather radars around Ichikawa, 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 Ichikawa yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Ichikawa
Waning gibbous
79 % illuminated · 19.3 days
Rise 14:57 Set 05:28
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 Ichikawa
Curious about the weather in Ichikawa on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Ichikawa weather at a glance
This page gathers everything about the weather in Ichikawa, Chiba: 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 12 °C (feels like 12 °C) and the wind blows at 5 km/h.
Expected range today: 14 °C to 21 °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 Ichikawa 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.
