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coastya
Satellite view of Hiari Ura; the pin marks the beach
Satellite view: Sentinel-2 cloudless · EOX, CC BY 4.0, colour-adjusted by Coastya. About 6 km of coast; the pin marks the beach.

Beach

Hiari Ura

JapanChiba · Japan · Sea of Japan

35.2694, 140.3995 · Ōhara, 2 km

  • 26°Sea · August
  • 27°High · August
  • 6.7 hSunshine · August
The dot marks Hiari Ura. About 140 km of coast, north at the top.

Your month at the beach

Hiari Ura in October

  • 22°CAir, daytime high19°C at night
  • 24°CSea temperature
  • 3.7 hSunshine a day
  • 14 daysRainy days in the month242 mm in total
  • 22 km/hAverage wind

Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.

The beach itself

No reliable information yet on: bathing water quality, wheelchair access, lifeguards.

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

October from 2020 to 2025

In October 2025 the sea averaged 25.2 °C — 1.6 °C above the 1991–2020 average.

Sea temperature 2025: +1.6 °C

1991–2020 average: 23.6 °C

Air, daytime high 2025: +0.9 °C

1991–2020 average: 21.8 °C

Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.

When to go

1991–2020 averages
Warmest seaAugust and September26 °C
Most sunshineMay and August7 h of sun a day
Least rainJanuary and February72 mm in the month

The year at a glance

  1. Jan18°5 h78 mm
  2. Feb16°5 h72 mm
  3. Mar16°5 h122 mm
  4. Apr17°6 h132 mm
  5. May20°6 h145 mm
  6. Jun22°4 h182 mm
  7. Jul24°5 h149 mm
  8. Aug26°7 h131 mm
  9. Sep26°5 h206 mm
  10. Oct24°4 h242 mm
  11. Nov22°4 h118 mm
  12. Dec20°5 h82 mm
8°C20°C32°C

Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.

Sea temperature

1991–2020 averages
15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecJan: 18°Feb: 16°Mar: 16°Apr: 17°May: 20°Jun: 22°Jul: 24°Aug: 26°Sep: 26°Oct: 24°Nov: 22°Dec: 20°26°16°
8°C20°C32°C

Climate through the year

1991–2020 averages
10°20°JanFebMarAprMayJunJulAugSepOctNovDecJan: 8 °C (High 10° / Low 6°)Feb: 9 °C (High 11° / Low 7°)Mar: 11 °C (High 13° / Low 9°)Apr: 15 °C (High 17° / Low 13°)May: 18 °C (High 20° / Low 17°)Jun: 21 °C (High 23° / Low 20°)Jul: 24 °C (High 26° / Low 23°)Aug: 26 °C (High 27° / Low 25°)Sep: 24 °C (High 26° / Low 23°)Oct: 20 °C (High 22° / Low 19°)Nov: 16 °C (High 18° / Low 14°)Dec: 11 °C (High 13° / Low 9°)26°8°
AverageLow – High
8°C20°C32°C

Rain

0 mm100 mm200 mmJanFebMarAprMayJunJulAugSepOctNovDecJan: 78 mmFeb: 72 mm72Mar: 122 mmApr: 132 mmMay: 145 mmJun: 182 mmJul: 149 mmAug: 131 mmSep: 206 mmOct: 242 mm242Nov: 118 mmDec: 82 mm

Sunshine

0 h2 h4 h6 hJanFebMarAprMayJunJulAugSepOctNovDecJan: 5.1 hFeb: 4.7 hMar: 5.0 hApr: 5.5 hMay: 5.6 hJun: 4.4 hJul: 5.4 hAug: 6.7 h6.7Sep: 4.8 hOct: 3.7 h3.7Nov: 3.9 hDec: 4.6 h

Sunshine hours are estimated from measured solar radiation, not observed directly.

Month by month

1991–2020 averages

Every month at Hiari Ura: air, sea, rain and sunshine. Averages for 1991–2020.

Every month at Hiari Ura: air, sea, rain and sunshine. Averages for 1991–2020.
MonthHigh°CLow°CSea°CRainmmRainy daysdaysSunshineh/dayWindkm/h
January106187865.125
February117167284.725
March13916122125.025
April171317132125.524
May201720145135.621
June232022182164.418
July262324149165.418
Augustwarmest sea272526131146.717
September262326206164.820
October221924242143.722
November181422118113.922
December139208284.624

Swipe sideways to see the other columns.

Photos

Photos shared by their authors on Wikimedia Commons, with its colours adjusted.

Hiari Ura: Hiari, Isumi, Chiba Prefecture 298-0002, Japan - panoramio
Photo: 運転太郎 · Wikimedia Commons · CC BY 3.0 · stylised; this version keeps the same licence.
Hiari Ura: Hiari, Isumi, Chiba Prefecture 298-0002, Japan - panoramio (1)
Photo: 運転太郎 · Wikimedia Commons · CC BY 3.0 · stylised; this version keeps the same licence.

Plan your trip

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

About these numbers

Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.

WhatWhere it comes from Nearest measurement
Air, rain and sunshineNASA POWER33 km away
Sea temperatureNOAA OISST v2.1, 1991–202016 km away
2020–2025, month by monthNASA POWER · NOAA OISST v2.133 km away
Lifeguards and places to stayOpenStreetMapwithin 1–5 km
Nearest airportOurAirportsstraight-line distance
Image at the topSentinel-2 cloudless (EOX)at this spot

See every data source →