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Weather & Climate in Saikū, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Saikū enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 41°F in January while summers reach 79°F in July. The area gets 198 sunny days per year. Annual precipitation totals 76.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 33 feet.
Temperature
41°F Jan (5°C)
79°F Jul (26°C)
| Annual Average | 60.1°F |
| 11% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 198 days/yr |
Geography
| Elevation | 33 ft (10 m) |
| Area | 91.8 sq mi (237.7 km²) |
| Population Density | 245/sq mi |
| Coordinates | 34.5333°N, 136.6333°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
621 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Jan 16, 1995 | 8 km S of Akashi, Japan | M6.9 | 148 km | 22 km |
| Jul 7, 1995 | 62 km SSE of Toba, Japan | M6.0 | 77 km | 333 km |
| Apr 1, 2016 | 54 km SE of Shing?, Japan | M5.9 | 130 km | 14 km |
| Jun 1, 1998 | 17 km SW of Owase, Japan | M5.8 | 83 km | 399 km |
| May 23, 1997 | 38 km SSE of Tahara, Japan | M5.8 | 80 km | 11 km |
| Feb 26, 2025 | 38 km ESE of Shingū, Japan | M5.8 | 106 km | 388 km |
| Aug 20, 1999 | 22 km SE of Kainan, Japan | M5.7 | 126 km | 66 km |
| Sep 5, 2004 | 93 km SE of Shing?, Japan | M5.7 | 144 km | 10 km |
| Nov 18, 2013 | 25 km SE of Toba, Japan | M5.6 | 44 km | 328 km |
| Mar 16, 1997 | 5 km NE of Toyokawa, Japan | M5.6 | 82 km | 36 km |
| Oct 18, 1996 | 102 km SSE of Toba, Japan | M5.6 | 118 km | 338 km |
| Aug 1, 2007 | 42 km ESE of Owase, Japan | M5.5 | 70 km | 371 km |
| Jun 17, 2018 | near the south coast of western Honshu, Japan | M5.5 | 97 km | 10 km |
| Jan 18, 2003 | 67 km SSE of Toba, Japan | M5.5 | 83 km | 33 km |
| Oct 30, 2000 | western Honshu, Japan | M5.5 | 46 km | 35 km |
| Apr 3, 2001 | 10 km NE of Mori, Japan | M5.4 | 133 km | 33 km |
| Jan 6, 2004 | 36 km S of Ise, Japan | M5.3 | 42 km | 33 km |
| May 9, 2022 | 7 km NE of Toba, Japan | M5.3 | 24 km | 329 km |
| Jan 15, 2021 | 76 km SSE of Toba, Japan | M5.2 | 91 km | 360 km |
| Mar 4, 2006 | 100 km SSE of Toba, Japan | M5.2 | 116 km | 338 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
52 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Nakri | Category 1 | - | 299 km |
| 2023 | Lan | Category 2 | 81 mph | 126 km |
| 2019 | Faxai | Category 4 | 98 mph | 223 km |
| 2019 | Hagibis | Category 2 | 92 mph | 171 km |
| 2018 | Jebi | Category 3 | 98 mph | 143 km |
| 2018 | Trami | Category 1 | 92 mph | 132 km |
| 2018 | Cimaron | Category 1 | 86 mph | 177 km |
| 2018 | Jongdari | Category 1 | 81 mph | 43 km |
| 2017 | Lan | Category 2 | 104 mph | 136 km |
| 2017 | Noru | Category 1 | 69 mph | 153 km |
| 2016 | Mindulle | Category 1 | 75 mph | 264 km |
| 2015 | Nangka | Category 1 | 81 mph | 275 km |
| 2014 | Phanfone | Category 2 | 92 mph | 71 km |
| 2013 | Wipha | Category 1 | 81 mph | 278 km |
| 2012 | Jelawat | Category 1 | 92 mph | 268 km |
| 2011 | Roke | Category 3 | 98 mph | 72 km |
| 2011 | Ma-on | Category 1 | 86 mph | 214 km |
| 2010 | Chaba | Category 1 | 75 mph | 250 km |
| 2009 | Melor | Category 1 | 86 mph | 59 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 118 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 21.0 m (69 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1854 | ENSHUNADA SEA | Earthquake | 21.0 m | 1,000 | 131 km |
| 1707 | ENSHUNADA | Earthquake | 11.0 m | 2,000 | 118 km |
| 1944 | OFF SOUTHEAST COAST KII PENINSULA | Earthquake | 10.0 m | 1,223 | 73 km |
| 1498 | ENSHUNADA SEA | Earthquake | 10.0 m | 5,000 | 147 km |
| 1096 | ENSHUNADA | Earthquake | 7.0 m | - | 99 km |
| 1855 | ENSHUNADA | Earthquake | 3.0 m | - | 89 km |
| 1520 | KII, KUMANANONADA | Earthquake | 2.0 m | - | 108 km |
| 1510 | OSAKA BAY | Earthquake | 2.0 m | - | 113 km |
| 1408 | KUMANONADA | Earthquake | 2.0 m | - | 85 km |
| 1403 | KUMANONADA | Earthquake | 2.0 m | - | 94 km |
| 922 | KUMANONADA | Earthquake | 2.0 m | - | 82 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 101 km |
| 1945 | TOKAIDO | Earthquake | 1.0 m | 2,306 | 55 km |
| 1995 | KOBE, JAPAN | Earthquake | 0.3 m | 6,434 | 143 km |
| 1791 | OASAKA BAY | Earthquake | - | - | 113 km |
| 1708 | TOKAIDO | Earthquake | - | - | 68 km |
| 1666 | AICHI PREFECTURE | Earthquake | - | - | 54 km |
| 1589 | SURUGA, JAPAN | Earthquake | - | - | 146 km |
| 1586 | ISE BAY | Earthquake | - | 8,000 | 54 km |
| 1360 | KUMANONADA | Earthquake | - | - | 132 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Ontakesan (170 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 170 km |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 181 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.2 in | Coldest, Driest |
| February | 42°F (5°C) | 3.1 in | |
| March | 47°F (8°C) | 5.0 in | |
| April | 57°F (14°C) | 6.8 in | |
| May | 65°F (18°C) | 6.7 in | |
| June | 72°F (22°C) | 10.4 in | |
| July | 79°F (26°C) | 8.9 in | |
| August | 81°F (27°C) | 8.0 in | Warmest |
| September | 74°F (24°C) | 11.1 in | Wettest |
| October | 64°F (18°C) | 7.5 in | |
| November | 54°F (12°C) | 4.3 in | |
| December | 45°F (7°C) | 2.2 in |
Saikū has a seasonal temperature swing of 39°F / from 41°F in January to 81°F in August. Total annual precipitation is 76.0 inches, with September being the wettest month (11.1") and January the driest (2.2").