Current Conditions

Isumi, Chiba

80°F27°C

Drizzle

Wind

NE 9 mph14 km/h

Humidity

94%

Cloud Cover

56%

As of Friday, July 24, 2026 at 1:54 AM GMT+9

Today's Outlook

Day

Mostly cloudy and warm, with a high of 83°F28°C — feels like 91°F33°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle around midday. Heavy, humid air.

Night

Mostly cloudy, with a low around 80°F27°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 30% chance of drizzle in the evening.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
FridayJul 24	Drizzle	High 83°F28°CFeels 92°F33°C	Low 80°F26°C	Precip 0.05 in1.2 mm30%	Cloud 63%	Wind E 9 mph14 km/h	Friday: Mostly cloudy and warm, with a high of 83°F28°C — feels like 91°F33°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle around midday. Heavy, humid air. Friday Night: Mostly cloudy, with a low around 80°F27°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 30% chance of drizzle in the evening.
SaturdayJul 25	Showers	High 85°F29°CFeels 96°F35°C	Low 79°F26°C	Precip 0.15 in3.7 mm54%	Cloud 65%	Wind ENE 6 mph9 km/h	Saturday: Partly cloudy and warm, with a high of 85°F29°C and morning low of 80°F26°C — feels like 95°F35°C. Breezy from the ENE at 5 to 7 mph8 to 11 km/h. 26% chance of drizzle in the morning. Heat risk in the afternoon. Saturday Night: Overcast, with a low around 79°F26°C. Breezy from the ENE at 6 to 8 mph10 to 13 km/h. 54% chance of light rain throughout the night.
SundayJul 26	Light Rain	High 82°F28°CFeels 89°F31°C	Low 78°F25°C	Precip 0.32 in8.1 mm74%	Cloud 81%	Wind NE 7 mph11 km/h	Sunday: Mostly cloudy and warm, with a high of 82°F28°C — feels like 88°F31°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. 58% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 78°F25°C. Breezy from the NE at 7 to 8 mph12 to 13 km/h. 74% chance of light rain throughout the night.
MondayJul 27	Rain	High 80°F27°C	Low 76°F25°C	Precip 0.61 in15.4 mm81%	Cloud 84%	Wind NE 9 mph15 km/h	Monday: Overcast and warm, with a high of 80°F27°C. Breezy from the NNE at 10 mph16 km/h. 48% chance of light rain throughout the day. Heavy, humid air. Monday Night: Overcast, with a low around 76°F25°C. Breezy from the NE at 9 mph14 km/h. 81% chance of rain throughout the night.
TuesdayJul 28	Light Rain	High 81°F27°CFeels 86°F30°C	Low 77°F25°C	Precip 0.26 in6.6 mm49%	Cloud 80%	Wind ENE 7 mph11 km/h	Tuesday: Mostly cloudy and warm, with a high of 81°F27°C. Breezy from the E at 7 to 8 mph11 to 12 km/h. 47% chance of light rain throughout the day. Heavy, humid air. Tuesday Night: Overcast, with a low around 77°F25°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. 49% chance of light rain throughout the night.
WednesdayJul 29	Showers	High 84°F29°CFeels 91°F33°C	Low 78°F25°C	Precip 0.17 in4.3 mm42%	Cloud 62%	Wind SSW 7 mph11 km/h	Wednesday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 78°F26°C — feels like 91°F33°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 27% chance of showers throughout the day. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 78°F25°C. Breezy from the SSW at 7 mph11 km/h. 42% chance of showers overnight.
ThursdayJul 30	Hot	High 86°F30°CFeels 96°F36°C	Low 80°F27°C	Precip 0.02 in0.4 mm8%	Cloud 68%	Wind SW 7 mph12 km/h	Thursday: Mostly cloudy and hot, with a high of 86°F30°C and morning low of 80°F27°C — feels like 97°F36°C. Breezy from the SSW at 7 to 9 mph12 to 15 km/h. Heat risk in the afternoon. Thursday Night: Mostly cloudy, with a low around 80°F27°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	FridayJul 24	83°F28°C Feels 92°F33°C	80°F26°C	0.05 in1.2 mm· 30%	63%	Drizzle	E 9 mph14 km/h
DayMostly cloudy and warm, with a high of 83°F28°C — feels like 91°F33°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle around midday. Heavy, humid air. NightMostly cloudy, with a low around 80°F27°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 30% chance of drizzle in the evening.
	SaturdayJul 25	85°F29°C Feels 96°F35°C	79°F26°C	0.15 in3.7 mm· 54%	65%	Showers	ENE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 80°F26°C — feels like 95°F35°C. Breezy from the ENE at 5 to 7 mph8 to 11 km/h. 26% chance of drizzle in the morning. Heat risk in the afternoon. NightOvercast, with a low around 79°F26°C. Breezy from the ENE at 6 to 8 mph10 to 13 km/h. 54% chance of light rain throughout the night.
	SundayJul 26	82°F28°C Feels 89°F31°C	78°F25°C	0.32 in8.1 mm· 74%	81%	Light Rain	NE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 88°F31°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. 58% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 78°F25°C. Breezy from the NE at 7 to 8 mph12 to 13 km/h. 74% chance of light rain throughout the night.
	MondayJul 27	80°F27°C	76°F25°C	0.61 in15.4 mm· 81%	84%	Rain	NE 9 mph15 km/h
DayOvercast and warm, with a high of 80°F27°C. Breezy from the NNE at 10 mph16 km/h. 48% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 76°F25°C. Breezy from the NE at 9 mph14 km/h. 81% chance of rain throughout the night.
	TuesdayJul 28	81°F27°C Feels 86°F30°C	77°F25°C	0.26 in6.6 mm· 49%	80%	Light Rain	ENE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 81°F27°C. Breezy from the E at 7 to 8 mph11 to 12 km/h. 47% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 77°F25°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. 49% chance of light rain throughout the night.
	WednesdayJul 29	84°F29°C Feels 91°F33°C	78°F25°C	0.17 in4.3 mm· 42%	62%	Showers	SSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 78°F26°C — feels like 91°F33°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 27% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 78°F25°C. Breezy from the SSW at 7 mph11 km/h. 42% chance of showers overnight.
	ThursdayJul 30	86°F30°C Feels 96°F36°C	80°F27°C	0.02 in0.4 mm· 8%	68%	Hot	SW 7 mph12 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 80°F27°C — feels like 97°F36°C. Breezy from the SSW at 7 to 9 mph12 to 15 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 80°F27°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h.
	FridayJul 31	86°F30°C Feels 98°F37°C	82°F28°C Feels 90°F32°C	0.02 in0.4 mm· 10%	69%	Drizzle	SSW 8 mph13 km/h
DayMostly cloudy and hot, with a high of 86°F30°C — feels like 99°F37°C. Breezy from the SSW at 8 to 9 mph12 to 14 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon. NightMostly cloudy, with a low around 82°F28°C. Breezy from the SW at 9 mph14 km/h.
	SaturdayAug 1	86°F30°C Feels 98°F37°C	81°F27°C Feels 90°F32°C	0.06 in1.5 mm· 13%	58%	Drizzle	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 81°F27°C — feels like 99°F37°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h. 13% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SSW at 8 to 9 mph14 to 15 km/h. 11% chance of drizzle overnight.
	SundayAug 2	86°F30°C Feels 98°F36°C	82°F28°C Feels 90°F32°C	0.04 in0.9 mm· 13%	44%	Drizzle	SSW 9 mph14 km/h
DayPartly cloudy and warm, with a high of 86°F30°C — feels like 97°F36°C. Breezy from the S at 9 to 10 mph14 to 16 km/h. 13% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 82°F28°C. Breezy from the SSW at 9 mph14 km/h.
	MondayAug 3	86°F30°C Feels 97°F36°C	81°F27°C Feels 90°F32°C	0.03 in0.8 mm· 10%	39%	Drizzle	S 8 mph13 km/h
DayPartly cloudy and hot, with a high of 86°F30°C and morning low of 81°F27°C — feels like 97°F36°C. Breezy from the S at 8 to 10 mph13 to 16 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 10% chance of drizzle overnight.
	TuesdayAug 4	85°F29°C Feels 95°F35°C	81°F27°C Feels 89°F31°C	0.06 in1.5 mm· 21%	43%	Drizzle	ESE 9 mph15 km/h
DayPartly cloudy and warm, with a high of 85°F29°C — feels like 95°F35°C. Breezy from the ESE at 9 to 11 mph15 to 18 km/h. 21% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SE at 9 to 10 mph15 to 16 km/h. 10% chance of drizzle overnight.
	WednesdayAug 5	85°F29°C Feels 95°F35°C	81°F27°C Feels 88°F31°C	0.14 in3.5 mm· 29%	49%	Showers	E 11 mph18 km/h
DayPartly cloudy and warm, with a high of 85°F29°C — feels like 95°F35°C. Breezy from the E at 11 to 13 mph18 to 21 km/h. 29% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 81°F27°C. Breezy from the E at 11 to 12 mph17 to 20 km/h. 24% chance of showers throughout the night.
	ThursdayAug 6	84°F29°C Feels 94°F35°C	81°F27°C Feels 89°F31°C	0.23 in5.9 mm· 47%	59%	Showers	ESE 13 mph21 km/h
DayMostly cloudy and warm, with a high of 84°F29°C — feels like 95°F35°C. Breezy from the E at 13 to 14 mph21 to 23 km/h. 47% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 81°F27°C. Breezy from the ESE at 13 to 14 mph20 to 22 km/h. 35% chance of showers throughout the night.
	FridayAug 7	84°F29°C Feels 93°F34°C	81°F27°C Feels 88°F31°C	0.31 in7.9 mm· 46%	64%	Showers	SE 14 mph23 km/h
DayMostly cloudy and warm, with a high of 84°F29°C — feels like 93°F34°C. Breezy from the ESE at 15 mph23 km/h. 46% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SE at 14 to 15 mph22 to 23 km/h. 41% chance of showers throughout the night.

Nearby Cities

Ōhara1 mi2 km Katsuura8 mi12 km Mobara15 mi24 km Kamogawa20 mi31 km Ōamishirasato20 mi32 km Ōami20 mi33 km

About This Forecast

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Coordinates: 35.2300°N, 140.4049°E·Elevation: 1m·Timezone: Asia/Tokyo·Population: 35,544