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
15°
Feels like 15°
Wind↑ N 18 km/h
Humidity 64 %
Evening
Partly cloudy
17°
Feels like 17°
Wind↑ N 2 km/h
Humidity 56 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
16°
Feels like 16°
Wind↑ NNE 28 km/h
Humidity 73 %
Evening
Clear sky
17°
Feels like 17°
Wind↑ NE 33 km/h
Humidity 67 %
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
16°
Feels like 16°
Wind↑ NNE 27 km/h
Humidity 67 %
Evening
Clear sky
17°
Feels like 17°
Wind↑ E 15 km/h
Humidity 57 %
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
16°
Feels like 16°
Wind↑ NNE 16 km/h
Humidity 56 %
Evening
Partly cloudy
19°
Feels like 19°
Wind↑ S 7 km/h
Humidity 59 %
Yokosuka 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)
Yokosuka climate: what a normal year looks like
The hottest stretch is August, when afternoons average 29 °C; the coldest is January, when nights average 3 °C. Between those two months the average temperature changes by 21 °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 32 min of daylight in late June to 9 h 46 min in late December.
Afternoons climb to 25 °C only from July to September, with a typical peak of 29 °C in August.
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
9 °C
3 °C
77 mm
Feb
10 °C
4 °C
79 mm
Mar
12 °C
6 °C
131 mm
Apr
17 °C
11 °C
123 mm
May
21 °C
16 °C
136 mm
Jun
24 °C
20 °C
175 mm
Jul
27 °C
23 °C
155 mm
Aug
29 °C
25 °C
119 mm
Sep
26 °C
22 °C
193 mm
Oct
21 °C
16 °C
211 mm
Nov
16 °C
11 °C
100 mm
Dec
12 °C
6 °C
67 mm
Whole year
19 °C
13 °C
1,570 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 35.29° N, 139.65° 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 Yokosuka: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.56µg/m³
PM106µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Yokosuka
Rain observed over the last two hours by official weather radars around Yokosuka, 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 Yokosuka yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Yokosuka
Waning gibbous
79 % illuminated · 19.3 days
Rise 15:00 Set 05:27
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 Yokosuka
Curious about the weather in Yokosuka on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Yokosuka weather at a glance
This page gathers everything about the weather in Yokosuka, Kanagawa: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain showers”, it is 20 °C (feels like 20 °C) and the wind blows at 20 km/h.
Expected range today: 16 °C to 23 °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 Yokosuka 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.
