Shizuoka, Japan
Kosai
Kosai is a town in Shizuoka, Japan, close to the sea. It has a population of about 57,682 (2021). The climate is classified as humid subtropical (Köppen Cfa), with rain spread through the year and no real dry season.
Now19°C
Best timeApr · Oct–Nov
Population57,682
Local time03:16
34.70° N, 137.52° EElevation 30 mUTC+9 · Japan Standard Time
Postal codes431-0405, 431-0422 …October: high / low22° / 15°
Rain this month170mm
Sea this month23°
Best timeApr · Oct–Nov
Best: Apr · Oct–Nov. Warmth, sunshine and dry days, month by month.
Kosai at a glance
Sunrise · sunset06:05 · 17:0410 h 59 min of daylightThe moon tonightFull moon99% · Moonrise 17:24Next holiday3 NovemberCulture DayNext eclipse21 Feb 2027Penumbral lunar eclipse
Best time to visitApr · Oct–Nov
The months with the highest weather score
Warmest month30°C
Average high in August
Coolest month2°C
Average low in January
Wettest monthJuly
196 mm of rain
Driest monthDecember
51 mm of rain
Warmest sea27°C
August
Monuments nearby5+
within 15 km
Weather in Kosai
Now and the next ten days. The 14 and 30-day outlooks are one click away.
19°C
Today hour by hourRain · wind 3 km/h · humidity 98%
Today27 Oct25°19°28.2 mm
Wed28 Oct19°12°
Thu29 Oct20°11°
Fri30 Oct20°16°0.7 mm
Sat31 Oct21°14°4.2 mm
Sun1 Nov20°12°
Mon2 Nov22°15°1.2 mm
Tue3 Nov18°11°
Wed4 Nov16°13°1.5 mm
When to go to Kosai
Each month's weather score (warmth, sun, dry days) with its temperatures and rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | 46 | 41 | 44 | 68 | 59 | 55 | 44 | 44 | 54 | 68 | 76 | 55 |
| High | 9° | 10° | 13° | 18° | 22° | 25° | 29° | 30° | 27° | 22° | 17° | 12° |
| Low | 2° | 2° | 5° | 10° | 15° | 19° | 23° | 24° | 21° | 15° | 9° | 4° |
| Rain (mm) | 58 | 78 | 149 | 167 | 194 | 238 | 196 | 169 | 258 | 170 | 117 | 51 |
| Wet days | 5 | 7 | 12 | 11 | 14 | 16 | 19 | 19 | 19 | 13 | 7 | 5 |
| Sea | 16° | 16° | 16° | 17° | 19° | 22° | 25° | 27° | 26° | 23° | 21° | 19° |
What's on in Kosai
Concerts, football matches, the public holidays ahead and the town's festivals through the year.
Monuments and museums in Kosai
12 km
Mikkabi StationBuilt 19363.6 km
Arai BarrierBuilt 1600
10 km
Nakamura House, AraiBuilt 1688
14 km
Toyohashi City Public Hall15 km
Nishi-Kiga StationBuilt 1938
Museum1.2 km
Sakichi Toyoda Memorial House
Museum14 km
Toyohashi City Museum of Art and HistoryMore museums: おんやど白須賀
Outdoors around Kosai
Hiking routes from the town, and what there is to do within 15 km: huts, viewpoints, climbing, camping, ski areas and dive sites.
浜名湖カントリークラブGolf courses
1.1 km浜名湖パークビレッジCamp sites
1.9 kmやぎさん広場Zoos
3.3 kmLake Hamana Pleasure Boat Mikabi Seto PortViewpoints
3.7 kmHamanako Aquatic Experience Center WottoAquariums · 3 m
3.9 kmWSCSurf spots
4.1 kmTHE DIVESDive site
14 kmbe diveDive site
16 kmBlue LaboDive site
19 kmNature around Kosai
Wildlife in October
The birds and mammals of Japan seen most this month, compared with the rest of their year.
The sky over Kosai
Earthquakes around Kosai
The last 30 days within 300 km, and the record since 1950.
Last 30 days8magnitude 2.5+ within 300 kmSince 195079magnitude 5+ within 150 kmSignificant earthquakes on record118within 300 km
Strongest nearby since 1950
7.2Shima 73 km ↓1984 · 127 km
6.5Minamiizu 19 km ↙1974 · 113 km
6.3Gero 14 km ←1969 · 130 km
6.2Yoshida 2 km ↘2009 · 68 km
Tropical storms · Kosai
Towns and villages around Kosai
Each with its own page: weather, climate and the best time to visit.
Kosai from above
Around Kosai38 places to see, do and reach nearby
Lake HamanaNature6.2 kmLake SanaruNature15 kmObara ReservoirNature16 kmBanba ReservoirNature16 kmSana-gawaNature20 kmRyūgashi CavernNature20 kmBentenjima, AraiNature6.8 kmHimeshima, AichiNature25 kmMount UreMountain36 kmMount Hongū (Aichi)Mountain25 kmMount TomoeMountain32 kmMount HoraijiMountain32 kmMount TonmakuMountain18 kmMount GoiMountain29 kmTHE DIVESDive site14 kmbe diveDive site16 kmBlue LaboDive site19 kmMikkabi StationMonument12 kmArai BarrierMonument3.6 kmNakamura House, AraiMonument10 kmToyohashi City Public HallMonument14 kmNishi-Kiga StationMonument15 kmSakichi Toyoda Memorial HouseMuseum1.2 kmToyohashi City Museum of Art and HistoryMuseum14 kmToyohashi Museum of Natural ResourcesMuseum8.9 kmFutagawa-shuku Honjin MuseumMuseum7.1 kmToyohashi Museum of Natural HistoryMuseum8.6 kmStationStation2.8 kmStationStation4.0 kmStationStation4.3 kmKosai · ferry portFerry port28 kmKosai · ferry portFerry port28 kmToyohashiPlace15 kmToyokawaPlace17 kmShinshiroPlace22 kmHamamatsuPlace19 kmTaharaPlace24 kmAraiPlace4.5 km
Postal codes
431-0405431-0422431-0428431-0429431-0441431-0443431-0444
Getting to Kosai
Mount Fuji Shizuoka AirportFSZ
62 kmChubu Centrair International AirportNGO
68 kmNagoya Airport / JASDF Komaki Air BaseNKM
82 km鷲津Railway station
2.8 kmアスモ前Railway station
4 km新所原Railway station
4.3 km東浜船着場三河大島連絡船乗り場 · 西浜船着場
28 km西浜船着場三河大島連絡船乗り場 · 東浜船着場
28 kmPlaces near Kosai
Places with a climate like Kosai
Matched month by month on temperature, rain and sunshine.
Frequently asked questions
When is the best time to visit Kosai?
Based on 30-year climate normals, April, October and November offer the best balance of comfortable temperatures, low rainfall and sunshine in Kosai.
What is the hottest month in Kosai?
August is the warmest month, with average highs of 30°C and lows of 24°C.
What is the coldest month in Kosai?
January is the coldest month, with average highs of 9°C and lows of 2°C.
What is the rainiest month in Kosai?
July is the wettest month with about 196 mm of precipitation on 19 wet days.
How warm is the sea near Kosai?
The sea is warmest in August at about 27°C and coolest in February at about 16°C.
What is the postal code of Kosai?
Kosai has 7 postal codes: 431-0405, 431-0422, 431-0428, 431-0429, 431-0441, 431-0443, 431-0444.