Isumi

Chiba, Japan · 1 m · Sun 25 Oct, 19:19 GMT+9GFS run 18 UTC · 3 days old (older run)
21°
OvercastFeels like 21°Today 19° – 23°
Sun 19:00· nowor click any hour below

Cloudy this evening, dry. Cloudy and warm tonight, 22°. Tomorrow cloudy, about as warm, up to 23°.

Right now

model value for 19:00, not a measurement
Wind4 m/s NE
Gusts5 m/s
Humidity82 %
Pressure1020 hPa ↗
Cloud cover100 %
Visibility24 km
UV index (CAMS)—
Air (US AQI, CAMS)—
Sun 27° below the horizon · sunrise 05:52 · sunset 16:51
Alerts for Isumi are out of date: we can’t confirm there are none right now.See all alerts ›
UmbrellaYes, from Mon 07:00Rain until Mon 07:00, 0.1 mm in all
Kite windowMon 08:00 – 10:00Wind 6–6 m/s, gusts under 8; not today: too gusty
Longest dry spell24 h from Fri 00:00Dry until Sat 00:00
TonightLow 22° at 00:00Cloudy, breezy; no frost

Next 24 hours

Click any hour: the sky, the panel, the sun chart and the planner follow it
hourly steps · GFS 18 UTC
23°22°20°
nowtemperature
TemperatureFeels likeWind m/sGustsRain mmClouds %
Sun 19:00 · Overcast21°, feels like 21°
Wind 4 m/s from NE, gusts 5 · dryClouds 100 % · humidity 82 %
Kite flying: PoorDark

Sun height

Sun 25 Oct · computed from the coordinatesUV not in the CAMS run for 19:00
Sun 25 Oct21 June, longest day21 December, shortest daythe disc shows the chosen hour
civil twilightnauticalastronomicalnight60°30°0°−18°21 Jun · 78.2°21 Dec · 31.3°↑ 05:52↓ 16:5119:00 · −26.8°000306091215182124
Sunrise05:52
Sunset16:51
Daylight10 h 59 min2 min shorter than Saturday
Highest42.7°at 11:15
Civil dawn · dusk05:26 · 17:17

Moon

from the coordinates
99 %Waxing gibbouslit now, Sun 19:19Moonrise 15:59Moonset 04:33
Next phases
Full moonMon 26 Octin 1 day
Last quarterMon 2 Novin 8 days
New moonMon 9 Novin 15 days
First quarterTue 17 Novin 23 days

Outdoor planner

The next 24 hours rated for six activities by fixed rules from this forecast, not by AI
How we rate ›
Planner rules, per hour. Avoid: thunder; gusts from 17 m/s (kite 15, picnic 14); rain from 1.0 mm (kite, laundry, picnic, car wash: any rain; laundry also rain within 3 h). Poor: storms due within 2 h (kite 3 h); dark (sun below −6°) or after sunset; light rain; strong gusts; humid air (laundry 85 % and up); chilly (picnic under 12°); rain within 12 h (car wash). Excellent: running 8°–18° with wind under 7 and Good air; cycling 10°–24° with wind under 6; kite wind 4–8 with gusts under 11; laundry humidity under 70 % with a breeze; picnic 16° and up with wind under 6. Anything else: Good.
You are here (now)Kite flying, hour by hour · click a block
now22010407101316
ExcellentGoodPoorAvoidNo air quality model for this place
Best timeMon 08:00 – 10:00Excellent · Steady 6 m/s, gusts 6
AvoidMon 12:00 – 18:00Rain
At Sun 19:00PoorDark

Air quality

US AQI · CAMS model

No CAMS air-quality run covers this place right now.

13 days

click a day for its details · high / low · rain
October – November 2026dashed: GFS only, read as a trend
MonTueWedThuFriSatSun
28
29
30
1past
2past
3past
4past
5past
6past
7past
8past
9past
10past
11past
12past
13past
14past
15past
16past
17past
18past
19past
20past
21past
22past
23past
24past
7
8

13-day outlook

by each day’s icon
13days
Click a tile to light up those days. Sun 25 Oct – Fri 6 Nov come from GFS alone: a trend, not a promise.

Sunday 25 Oct

Today
23° / 19°Light rain
Rain1.8 mmStrongest gust6 m/sSunrise · sunset05:52 · 16:51Moon at noon99 % · waxing gibbous
GFS only: no comparisonSee its hours ›

Do the models agree?

daily high, °C
GFSICON (no run here)ECMWF (no run here)spread
16°21°26°SuMoTuWeThFrSaSuMoTuOnly GFS reaches this place and these days: no other model to compare with.

Rain radar

observed
Loading radar…DWD radar
Open radar ›

Places nearby

now · within 25 km
18°Mobara24 km21°Ōhara2.0 km17°Katsuura12 km18°Hongō21 km
About this forecastNOAA GFS · run Wed 18 UTC · grid point 8.9 km away, model height 1 m (real 1 m) · values of the nearest grid point, nothing filled in · model forecast, not an observation
Model
NOAA GFS, 0.25° global grid
Model run
Thu 22 Oct, 03:00 GMT+9 (3 days ago)
Covers until
Fri 06 Nov, 03:00 GMT+9
Grid point used
35.25° N, 140.50° E — 8.9 km from Isumi, model terrain height 1 m
Air quality and UV
not available here
Compared with
no other model reaches this place
Method
Values of the nearest model grid point; nothing is interpolated or filled in. Sun and moon computed from the coordinates.

Isumi

Chiba · 1 m · Sun 25 Oct, 19:19 GMT+9
GFS run 18 UTC · 3 days old (older run)
21°
OvercastFeels like 21°Today 19° – 23°
Sun 19:00· now

Cloudy this evening, dry. Cloudy and warm tonight, 22°. Tomorrow cloudy, about as warm, up to 23°.

Wind4 NEGusts5 m/sRaindryAir (AQI)—
Alerts for Isumi are out of date: we can’t confirm there are none right now.See all alerts ›
UmbrellaYes, from Mon 07:00until Mon 07:00, 0.1 mm
Kite windowMon 08–10not today: too gusty
Dry spell24 h from Fri 00:00until Sat 00:00
TonightLow 22° at 00:00cloudy, no frost

Next 24 hours

swipe sideways · tap an hour
Temperature, 20° to 23° · hourly GFS steps
Rows: time · sky · °C · feels like · wind m/s · gusts (orange from 14) · rain mm · clouds %. Shaded: night.
Sun 19:00 · Overcast21°, feels like 21°
Kite flying: PoorDark
Wind4 m/s NEGusts5 m/sHumidity82 %Pressure1020 hPa ↗Clouds100 %Visibility24 kmUV (CAMS)—US AQI—
model value for 19:00, not a measurement

Sun height

Sun 25 Oct
UV not in the CAMS run for 19:00
Sun 25 Oct21 June21 December
twilight and night60°30°0°21 Jun 78.2°21 Dec 31.3°↑05:52↓16:5119:00 · −26.8°0006121824
Sunrise · sunset05:52 · 16:51
Daylight10 h 59 min
Highest42.7° at 11:15
Civil dawn · dusk05:26 · 17:17

Outdoor planner

next 24 h, rated by fixed rules from this forecast
How we rate ›
Planner rules, per hour. Avoid: thunder; gusts from 17 m/s (kite 15, picnic 14); rain from 1.0 mm (kite, laundry, picnic, car wash: any rain; laundry also rain within 3 h). Poor: storms due within 2 h (kite 3 h); dark (sun below −6°) or after sunset; light rain; strong gusts; humid air (laundry 85 % and up); chilly (picnic under 12°); rain within 12 h (car wash). Excellent: running 8°–18° with wind under 7 and Good air; cycling 10°–24° with wind under 6; kite wind 4–8 with gusts under 11; laundry humidity under 70 % with a breeze; picnic 16° and up with wind under 6. Anything else: Good.
You are hereKite flying, hour by hour
now010713
ExcellentGoodPoorAvoid
Best timeMon 08:00 – 10:00Excellent · Steady 6 m/s, gusts 6
AvoidMon 12:00 – 18:00Rain
At Sun 19:00PoorDark

Air quality

US AQI · CAMS model

No CAMS air-quality run covers this place right now.

Moon

from the coordinates
99 %Waxing gibbouslit now, Sun 19:19Rise 15:59 · set 04:33
Next phases
Full moonMon 26 Octin 1 day
Last quarterMon 2 Novin 8 days
New moonMon 9 Novin 15 days
First quarterTue 17 Novin 23 days

13 days

tap a day for its details
October – November 2026dashed: GFS only · – no forecast yet
MoTuWeThFrSaSu
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
7
8
Sunday 25 Oct · TodayLight rain
23° 19°
Rain1.8 mmGusts6Sun ↑ ↓05:52 16:51Moon99 %
GFS only: no comparisonIts hours ›

13-day outlook

by each day’s icon
13days
Tap a tile to light up those days above. Sun 25 Oct – Fri 6 Nov come from GFS alone: a trend.

Do the models agree?

daily high
GFSICONECMWFspread
16°21°26°SuMoTuWeThFrSaSuMoTuOnly GFS reaches this place and these days: no other model to compare with.

Rain radar

observed
Loading radar…DWD radar
Open ›

Places nearby

now · within 25 km
18°Mobara24 km21°Ōhara2.0 km17°Katsuura12 km18°Hongō21 km
About this forecastNOAA GFS, run Wed 18 UTC · model forecast, not an observation
Model
NOAA GFS, 0.25° global grid
Model run
Thu 22 Oct, 03:00 GMT+9 (3 days ago)
Covers until
Fri 06 Nov, 03:00 GMT+9
Grid point used
35.25° N, 140.50° E — 8.9 km from Isumi, model terrain height 1 m
Air quality and UV
not available here
Compared with
no other model reaches this place
Method
Values of the nearest model grid point; nothing is interpolated or filled in. Sun and moon computed from the coordinates.