Current Conditions

Katsuura, Chiba

78°F26°C

Rain

Wind

E 10 mph16 km/h

Humidity

89%

Cloud Cover

88%

As of Thursday, August 13, 2026 at 4:33 PM GMT+9

Today's Outlook

Day

Overcast and warm, with a high of 80°F27°C. Breezy from the E at 9 mph15 km/h. 100% chance of rain throughout the day. Heavy, humid air.

Night

Overcast, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 95% chance of rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F27°C	Low 77°F25°C	Precip 0.85 in21.7 mm100%	Cloud 90%	Wind E 9 mph15 km/h	Friday: Overcast and warm, with a high of 80°F27°C. Breezy from the E at 9 mph15 km/h. 100% chance of rain throughout the day. Heavy, humid air. Friday Night: Overcast, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 95% chance of rain throughout the night.
Showers	High 81°F27°CFeels 86°F30°C	Low 77°F25°C	Precip 0.27 in6.9 mm96%	Cloud 68%	Wind E 10 mph16 km/h	Saturday: Mostly cloudy and warm, with a high of 81°F27°C. Breezy from the E at 10 to 11 mph17 to 18 km/h. 64% chance of showers throughout the day. Heavy, humid air. Saturday Night: Mostly cloudy, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 96% chance of light rain throughout the night.
Drizzle	High 80°F27°C	Low 77°F25°C	Precip 0.05 in1.2 mm48%	Cloud 66%	Wind ENE 9 mph15 km/h	Sunday: Mostly cloudy and warm, with a high of 80°F27°C. Breezy from the ENE at 10 mph16 km/h. 48% chance of drizzle throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 17% chance of drizzle in the evening.
Drizzle	High 81°F27°CFeels 86°F30°C	Low 77°F25°C	Precip 0.06 in1.5 mm41%	Cloud 86%	Wind ESE 7 mph12 km/h	Monday: Overcast and warm, with a high of 81°F27°C. Breezy from the ESE at 7 to 9 mph12 to 14 km/h. 41% chance of drizzle throughout the day. Heavy, humid air. Monday Night: Overcast, with a low around 78°F25°C. Breezy from the ESE at 8 mph12 km/h. 37% chance of drizzle throughout the night.
Drizzle	High 82°F28°CFeels 88°F31°C	Low 79°F26°C	Precip 0.08 in2.1 mm30%	Cloud 71%	Wind SE 7 mph12 km/h	Tuesday: Mostly cloudy and warm, with a high of 82°F28°C — feels like 88°F31°C. Breezy from the SE at 8 to 9 mph12 to 14 km/h. 30% chance of drizzle throughout the day. Heavy, humid air. Tuesday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the SE at 7 to 8 mph12 to 14 km/h. 15% chance of drizzle throughout the night.
Drizzle	High 83°F28°CFeels 90°F32°C	Low 79°F26°C	Precip 0.09 in2.4 mm22%	Cloud 60%	Wind SSE 7 mph11 km/h	Wednesday: Mostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. 22% chance of drizzle throughout the day. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 80°F26°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 21% chance of drizzle throughout the night.
Showers	High 83°F28°CFeels 89°F32°C	Low 79°F26°C	Precip 0.12 in3 mm31%	Cloud 60%	Wind SE 7 mph11 km/h	Thursday: Mostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SE at 7 to 9 mph12 to 14 km/h. 31% chance of showers throughout the day. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 24% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	FridayAug 14	80°F27°C	77°F25°C	0.85 in21.7 mm· 100%	90%	Rain	E 9 mph15 km/h
DayOvercast and warm, with a high of 80°F27°C. Breezy from the E at 9 mph15 km/h. 100% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 95% chance of rain throughout the night.
	SaturdayAug 15	81°F27°C Feels 86°F30°C	77°F25°C	0.27 in6.9 mm· 96%	68%	Showers	E 10 mph16 km/h
DayMostly cloudy and warm, with a high of 81°F27°C. Breezy from the E at 10 to 11 mph17 to 18 km/h. 64% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 17 km/h. 96% chance of light rain throughout the night.
	SundayAug 16	80°F27°C	77°F25°C	0.05 in1.2 mm· 48%	66%	Drizzle	ENE 9 mph15 km/h
DayMostly cloudy and warm, with a high of 80°F27°C. Breezy from the ENE at 10 mph16 km/h. 48% chance of drizzle throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 77°F25°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 17% chance of drizzle in the evening.
	MondayAug 17	81°F27°C Feels 86°F30°C	77°F25°C	0.06 in1.5 mm· 41%	86%	Drizzle	ESE 7 mph12 km/h
DayOvercast and warm, with a high of 81°F27°C. Breezy from the ESE at 7 to 9 mph12 to 14 km/h. 41% chance of drizzle throughout the day. Heavy, humid air. NightOvercast, with a low around 78°F25°C. Breezy from the ESE at 8 mph12 km/h. 37% chance of drizzle throughout the night.
	TuesdayAug 18	82°F28°C Feels 88°F31°C	79°F26°C	0.08 in2.1 mm· 30%	71%	Drizzle	SE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 88°F31°C. Breezy from the SE at 8 to 9 mph12 to 14 km/h. 30% chance of drizzle throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SE at 7 to 8 mph12 to 14 km/h. 15% chance of drizzle throughout the night.
	WednesdayAug 19	83°F28°C Feels 90°F32°C	79°F26°C	0.09 in2.4 mm· 22%	60%	Drizzle	SSE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. 22% chance of drizzle throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 80°F26°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 21% chance of drizzle throughout the night.
	ThursdayAug 20	83°F28°C Feels 89°F32°C	79°F26°C	0.12 in3 mm· 31%	60%	Showers	SE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SE at 7 to 9 mph12 to 14 km/h. 31% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SSE at 7 to 8 mph11 to 13 km/h. 24% chance of drizzle throughout the night.
	FridayAug 21	82°F28°C Feels 88°F31°C	79°F26°C	0.21 in5.4 mm· 36%	71%	Light Rain	S 9 mph14 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 88°F31°C. Breezy from the S at 9 to 10 mph14 to 16 km/h. 36% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 79°F26°C. Breezy from the S at 8 to 10 mph14 to 16 km/h. 25% chance of light rain throughout the night.
	SaturdayAug 22	82°F28°C Feels 89°F32°C	79°F26°C	0.26 in6.5 mm· 38%	69%	Showers	SSW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 90°F32°C. Breezy from the SSW at 10 to 12 mph16 to 19 km/h. 38% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SSW at 10 to 11 mph16 to 18 km/h. 37% chance of light rain throughout the night.
	SundayAug 23	83°F28°C Feels 90°F32°C	80°F27°C	0.21 in5.4 mm· 33%	66%	Showers	SSW 12 mph19 km/h
DayMostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SSW at 12 to 13 mph19 to 20 km/h. 33% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 80°F27°C. Breezy from the SSW at 12 mph19 km/h. 33% chance of showers throughout the night.
	MondayAug 24	83°F28°C Feels 90°F32°C	80°F27°C	0.16 in4.1 mm· 28%	51%	Showers	SSW 12 mph19 km/h
DayMostly cloudy and warm, with a high of 83°F28°C — feels like 90°F32°C. Breezy from the SSW at 12 to 13 mph19 to 20 km/h. 27% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 80°F27°C. Breezy from the SSW at 12 mph19 km/h. 28% chance of showers throughout the night.
	TuesdayAug 25	83°F29°C Feels 91°F33°C	80°F27°C	0.11 in2.8 mm· 19%	42%	Drizzle	SW 12 mph20 km/h
DayPartly cloudy and warm, with a high of 83°F29°C — feels like 91°F33°C. Breezy from the SW at 12 to 13 mph19 to 21 km/h. 19% chance of drizzle throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 80°F27°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h. 18% chance of drizzle throughout the night.
	WednesdayAug 26	84°F29°C Feels 92°F34°C	81°F27°C Feels 87°F30°C	0.06 in1.6 mm· 16%	42%	Drizzle	SSW 12 mph19 km/h
DayPartly cloudy and warm, with a high of 84°F29°C — feels like 93°F34°C. Breezy from the SSW at 12 to 13 mph19 to 21 km/h. 16% chance of drizzle throughout the day. Heavy, humid air. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SSW at 12 to 13 mph20 to 20 km/h. 15% chance of drizzle throughout the night.
	ThursdayAug 27	83°F28°C Feels 91°F33°C	80°F27°C	0.13 in3.2 mm· 27%	48%	Showers	SSW 11 mph18 km/h
DayPartly cloudy and warm, with a high of 83°F28°C — feels like 91°F33°C. Breezy from the SSW at 12 mph19 km/h. 27% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 80°F27°C. Breezy from the SSW at 11 to 12 mph18 to 19 km/h. 21% chance of drizzle throughout the night.
	FridayAug 28	82°F28°C Feels 90°F32°C	80°F27°C	0.09 in2.4 mm· 29%	51%	Showers	S 12 mph19 km/h
DayMostly cloudy and warm, with a high of 82°F28°C — feels like 90°F32°C. Breezy from the SSE at 12 to 13 mph19 to 21 km/h. 29% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 80°F27°C. Breezy from the SSW at 11 mph18 km/h. 27% chance of drizzle throughout the night.

Nearby Cities

Isumi8 mi12 km Ōhara8 mi13 km Kamogawa13 mi20 km Mobara19 mi31 km Minamibōsō23 mi38 km Sodegaura25 mi40 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 35.1462°N, 140.3151°E·Elevation: 23m·Timezone: Asia/Tokyo·Population: 16,927