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
9°
Feels like 5°
Wind↑ NW 27 km/h
Gusts52 km/h
Humidity 60 %
Afternoon
Clear sky
13°
Feels like 13°
Wind↑ NW 19 km/h
Humidity 46 %
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
10°
Feels like 8°
Wind↑ W 13 km/h
Humidity 61 %
Afternoon
Clear sky
16°
Feels like 16°
Wind↑ S 12 km/h
Humidity 52 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Mainly clear
12°
Feels like 12°
Wind↑ W 7 km/h
Humidity 59 %
Afternoon
Light rain
14°
Feels like 14°
Wind↑ NNE 14 km/h
Humidity 86 %
💧 1.7 mm
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
12°
Feels like 12°
Wind↑ NNW 11 km/h
Humidity 63 %
Afternoon
Clear sky
16°
Feels like 16°
Wind↑ NNE 23 km/h
Humidity 60 %
Onahama 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)
Onahama climate: what a normal year looks like
The hottest stretch is August, when afternoons average 27 °C; the coldest is January, when nights average 1 °C. Between those two months the average temperature changes by 22 °C.
A normal year brings roughly 1,570 mm of rain — more than 78% of the towns of 20,000+ people we compared it with.
From 14 h 41 min of daylight in late June to 9 h 37 min in late December.
Afternoons climb to 25 °C only in July and August, with a typical peak of 27 °C in August.
Forecast highs for the coming week average 17 °C, 2 °C cooler than a normal October (19 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
5 °C
1 °C
68 mm
Feb
7 °C
1 °C
66 mm
Mar
9 °C
3 °C
115 mm
Apr
14 °C
8 °C
127 mm
May
19 °C
13 °C
140 mm
Jun
22 °C
17 °C
151 mm
Jul
26 °C
21 °C
192 mm
Aug
27 °C
22 °C
154 mm
Sep
24 °C
19 °C
197 mm
Oct
19 °C
14 °C
193 mm
Nov
14 °C
8 °C
98 mm
Dec
9 °C
3 °C
65 mm
Whole year
16 °C
11 °C
1,570 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 36.94° N, 140.89° 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 Onahama: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.51µg/m³
PM101µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Onahama
Rain observed over the last two hours by official weather radars around Onahama, 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 Onahama yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Onahama
Waning gibbous
79 % illuminated · 19.3 days
Rise 14:49 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 Onahama
Curious about the weather in Onahama on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Onahama weather at a glance
This page gathers everything about the weather in Onahama, 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 17 °C (feels like 17 °C) and the wind blows at 12 km/h.
Expected range today: 15 °C to 18 °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 Onahama 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.
