Current Conditions

Isumi, Chiba

83°F29°C

Light Rain

Feels like93°F34°C

Wind

SW 10 mph17 km/h

Humidity

81%

Cloud Cover

97%

As of Thursday, September 3, 2026 at 11:40 AM GMT+9

Today's Outlook

Day

Overcast and warm, with a high of 83°F29°C — feels like 93°F34°C. Breezy from the SW at 9 to 10 mph15 to 17 km/h. 54% chance of light rain throughout the day. Heavy, humid air.

Night

Overcast, with a low around 78°F25°C. Breezy from the N at 8 mph13 km/h. 61% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light Rain	High 83°F29°CFeels 93°F34°C	Low 78°F25°C	Precip 0.15 in3.8 mm61%	Cloud 96%	Wind SW 9 mph14 km/h	Thursday: Overcast and warm, with a high of 83°F29°C — feels like 93°F34°C. Breezy from the SW at 9 to 10 mph15 to 17 km/h. 54% chance of light rain throughout the day. Heavy, humid air. Thursday Night: Overcast, with a low around 78°F25°C. Breezy from the N at 8 mph13 km/h. 61% chance of light rain throughout the night.
Rain	High 79°F26°C	Low 77°F25°C	Precip 0.31 in7.9 mm73%	Cloud 95%	Wind NE 7 mph11 km/h	Friday: Overcast and warm, with a high of 79°F26°C. Breezy from the NE at 7 to 8 mph11 to 14 km/h. 60% chance of light rain throughout the day. Heavy, humid air. Friday Night: Overcast, with a low around 77°F25°C. Breezy from the ENE at 7 to 10 mph12 to 16 km/h. 73% chance of rain throughout the night.
Rain	High 77°F25°C	Low 74°F23°C	Precip 1.09 in27.6 mm99%	Cloud 98%	Wind ENE 13 mph21 km/h	Saturday: Overcast and warm, with a high of 77°F25°C. Breezy from the NE at 13 to 14 mph20 to 22 km/h. 95% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 75°F24°C. Breezy from the ENE at 13 to 14 mph21 to 23 km/h. 99% chance of rain throughout the night.
Rain	High 77°F25°C	Low 76°F24°C	Precip 1.6 in40.7 mm93%	Cloud 99%	Wind ENE 18 mph29 km/h	Sunday: Overcast and warm, with a high of 77°F25°C. Windy from the ENE at 19 mph30 km/h. 91% chance of rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 76°F24°C. Windy from the ENE at 17 to 19 mph28 to 31 km/h. 93% chance of rain throughout the night.
Heavy Rain	High 79°F26°C	Low 77°F25°C	Precip 2.3 in58.3 mm97%	Cloud 95%	Wind SSE 17 mph27 km/h	Monday: Overcast and warm, with a high of 79°F26°C. Windy from the SSE at 17 to 18 mph27 to 28 km/h. 97% chance of heavy rain throughout the day. Heavy, humid air. Monday Night: Overcast, with a low around 77°F25°C. Windy from the SE at 17 to 19 mph27 to 30 km/h. 96% chance of rain throughout the night.
Rain	High 81°F27°CFeels 88°F31°C	Low 78°F26°C	Precip 0.41 in10.5 mm72%	Cloud 71%	Wind SSW 12 mph20 km/h	Tuesday: Mostly cloudy and warm, with a high of 81°F27°C — feels like 88°F31°C. Breezy from the SSW at 12 to 13 mph19 to 20 km/h. 61% chance of light rain throughout the day. Heavy, humid air. Tuesday Night: Mostly cloudy, with a low around 78°F26°C. Breezy from the SSW at 13 to 14 mph21 to 23 km/h. 72% chance of rain throughout the night.
Showers	High 82°F28°CFeels 90°F32°C	Low 79°F26°C	Precip 0.23 in5.8 mm48%	Cloud 59%	Wind SW 13 mph21 km/h	Wednesday: Mostly cloudy and warm, with a high of 82°F28°C — feels like 90°F32°C. Breezy from the SW at 13 to 14 mph21 to 22 km/h. 42% chance of showers throughout the day. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the SW at 13 mph20 km/h. 48% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdaySep 3	83°F29°C Feels 93°F34°C	78°F25°C	0.15 in3.8 mm· 61%	96%	Light Rain	SW 9 mph14 km/h
DayOvercast and warm, with a high of 83°F29°C — feels like 93°F34°C. Breezy from the SW at 9 to 10 mph15 to 17 km/h. 54% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 78°F25°C. Breezy from the N at 8 mph13 km/h. 61% chance of light rain throughout the night.
	FridaySep 4	79°F26°C	77°F25°C	0.31 in7.9 mm· 73%	95%	Rain	NE 7 mph11 km/h
DayOvercast and warm, with a high of 79°F26°C. Breezy from the NE at 7 to 8 mph11 to 14 km/h. 60% 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 10 mph12 to 16 km/h. 73% chance of rain throughout the night.
	SaturdaySep 5	77°F25°C	74°F23°C	1.09 in27.6 mm· 99%	98%	Rain	ENE 13 mph21 km/h
DayOvercast and warm, with a high of 77°F25°C. Breezy from the NE at 13 to 14 mph20 to 22 km/h. 95% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 75°F24°C. Breezy from the ENE at 13 to 14 mph21 to 23 km/h. 99% chance of rain throughout the night.
	SundaySep 6	77°F25°C	76°F24°C	1.6 in40.7 mm· 93%	99%	Rain	ENE 18 mph29 km/h
DayOvercast and warm, with a high of 77°F25°C. Windy from the ENE at 19 mph30 km/h. 91% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 76°F24°C. Windy from the ENE at 17 to 19 mph28 to 31 km/h. 93% chance of rain throughout the night.
	MondaySep 7	79°F26°C	77°F25°C	2.3 in58.3 mm· 97%	95%	Heavy Rain	SSE 17 mph27 km/h
DayOvercast and warm, with a high of 79°F26°C. Windy from the SSE at 17 to 18 mph27 to 28 km/h. 97% chance of heavy rain throughout the day. Heavy, humid air. NightOvercast, with a low around 77°F25°C. Windy from the SE at 17 to 19 mph27 to 30 km/h. 96% chance of rain throughout the night.
	TuesdaySep 8	81°F27°C Feels 88°F31°C	78°F26°C	0.41 in10.5 mm· 72%	71%	Rain	SSW 12 mph20 km/h
DayMostly cloudy and warm, with a high of 81°F27°C — feels like 88°F31°C. Breezy from the SSW at 12 to 13 mph19 to 20 km/h. 61% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 78°F26°C. Breezy from the SSW at 13 to 14 mph21 to 23 km/h. 72% chance of rain throughout the night.
	WednesdaySep 9	82°F28°C Feels 90°F32°C	79°F26°C	0.23 in5.8 mm· 48%	59%	Showers	SW 13 mph21 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 90°F32°C. Breezy from the SW at 13 to 14 mph21 to 22 km/h. 42% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SW at 13 mph20 km/h. 48% chance of showers throughout the night.
	ThursdaySep 10	78°F26°C	76°F24°C	0.49 in12.4 mm· 66%	84%	Light Rain	NE 13 mph21 km/h
DayOvercast and warm, with a high of 78°F25°C. Breezy from the NE at 14 mph22 km/h. 66% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 76°F24°C. Breezy from the NNE at 13 to 14 mph21 to 22 km/h. 60% chance of light rain throughout the night.
	FridaySep 11	77°F25°C	75°F24°C	0.33 in8.4 mm· 57%	86%	Light Rain	NE 12 mph20 km/h
DayOvercast and warm, with a high of 77°F25°C. Breezy from the NE at 13 mph20 km/h. 43% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 75°F24°C. Breezy from the NE at 12 mph19 km/h. 57% chance of light rain throughout the night.
	SaturdaySep 12	78°F26°C	75°F24°C	0.15 in3.8 mm· 32%	74%	Light Rain	NE 11 mph17 km/h
DayMostly cloudy and warm, with a high of 78°F26°C. Breezy from the NE at 11 mph18 km/h. 32% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 75°F24°C. Breezy from the NE at 10 to 11 mph17 to 17 km/h. 30% chance of drizzle throughout the night.
	SundaySep 13	79°F26°C	76°F25°C	0.11 in2.8 mm· 26%	59%	Drizzle	ENE 10 mph16 km/h
DayMostly cloudy and warm, with a high of 79°F26°C. Breezy from the ENE at 10 to 11 mph17 to 18 km/h. 26% chance of drizzle throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 76°F25°C. Breezy from the E at 10 to 11 mph16 to 17 km/h. 22% chance of drizzle throughout the night.
	MondaySep 14	79°F26°C	76°F24°C	0.24 in6.2 mm· 42%	67%	Showers	ENE 11 mph17 km/h
DayMostly cloudy and warm, with a high of 79°F26°C. Breezy from the ENE at 11 to 12 mph18 to 19 km/h. 42% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 76°F25°C. Breezy from the ENE at 10 to 11 mph17 to 18 km/h. 36% chance of showers throughout the night.
	TuesdaySep 15	78°F25°C	75°F24°C	0.36 in9.2 mm· 49%	77%	Light Rain	NE 11 mph18 km/h
DayMostly cloudy and warm, with a high of 78°F25°C. Breezy from the NE at 11 to 12 mph18 to 19 km/h. 49% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 75°F24°C. Breezy from the NE at 11 mph17 km/h. 42% chance of light rain throughout the night.
	WednesdaySep 16	77°F25°C	75°F24°C	0.32 in8.2 mm· 46%	74%	Light Rain	NE 11 mph18 km/h
DayMostly cloudy and warm, with a high of 77°F25°C. Breezy from the NE at 12 mph19 km/h. 46% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 75°F24°C. Breezy from the NE at 11 mph17 km/h. 37% chance of light rain throughout the night.
	ThursdaySep 17	77°F25°C	74°F24°C	0.41 in10.5 mm· 56%	78%	Light Rain	NE 11 mph18 km/h
DayOvercast and warm, with a high of 77°F25°C. Breezy from the NE at 11 to 12 mph18 to 19 km/h. 56% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 74°F24°C. Breezy from the NE at 11 to 12 mph17 to 19 km/h. 43% chance of light rain 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