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Weather & Climate in Seisui, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Seisui has a warm climate with an average annual temperature of 71°F (22°C). Winters average 59°F in January while summers reach 82°F in July. The area gets 167 sunny days per year, below the national average of 205. Annual precipitation totals 94.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 43 feet.
Temperature
59°F Jan (15°C)
82°F Jul (28°C)
| Annual Average | 70.7°F |
| 31% above US avg | |
| January Average | 59°F (15°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 167 days/yr |
Geography
| Elevation | 43 ft (13 m) |
| Area | 1,094.2 sq mi (2,833.9 km²) |
| Population Density | 8/sq mi |
| Coordinates | 28.1369°N, 129.3307°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
1,130 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Oct 18, 1995 | 83 km SE of Naze, Japan | M7.1 | 86 km | 28 km |
| Oct 30, 2009 | 98 km NNE of Naze, Japan | M6.8 | 128 km | 34 km |
| Oct 19, 1995 | 71 km ESE of Naze, Japan | M6.8 | 80 km | 20 km |
| Jun 13, 2020 | 130 km WNW of Naze, Japan | M6.6 | 131 km | 165 km |
| Jan 17, 1997 | 67 km NE of Naze, Japan | M6.3 | 97 km | 33 km |
| Oct 19, 1995 | 69 km ESE of Naze, Japan | M6.3 | 81 km | 33 km |
| Dec 8, 2001 | 15 km SE of Naze, Japan | M6.2 | 27 km | 33 km |
| Sep 13, 1994 | 110 km NNE of Naze, Japan | M6.1 | 140 km | 34 km |
| Oct 18, 1995 | 73 km ESE of Naze, Japan | M6.1 | 87 km | 28 km |
| Jun 16, 1990 | 153 km N of Nago, Japan | M6.0 | 134 km | 27 km |
| Jul 8, 2008 | 107 km NNE of Nago, Japan | M6.0 | 119 km | 43 km |
| Jun 4, 1992 | 145 km WSW of Naze, Japan | M6.0 | 126 km | 17 km |
| Sep 28, 2009 | 146 km N of Nago, Japan | M5.8 | 150 km | 9 km |
| Jun 2, 1996 | 102 km NNE of Nago, Japan | M5.8 | 115 km | 42 km |
| Oct 2, 2000 | 119 km N of Naze, Japan | M5.8 | 145 km | 33 km |
| Sep 27, 2003 | 118 km WNW of Naze, Japan | M5.7 | 120 km | 10 km |
| Nov 1, 1995 | 59 km ESE of Naze, Japan | M5.7 | 71 km | 33 km |
| Sep 26, 2016 | 110 km NNE of Nago, Japan | M5.7 | 105 km | 38 km |
| Oct 19, 1995 | 79 km SE of Naze, Japan | M5.7 | 74 km | 29 km |
| Apr 20, 2007 | 102 km NNE of Nago, Japan | M5.7 | 119 km | 42 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
93 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Shanshan | Category 4 | 109 mph | 108 km |
| 2024 | Bebinca | Category 1 | 86 mph | 147 km |
| 2022 | Nanmadol | Category 4 | 121 mph | 207 km |
| 2022 | Hinnamnor | Category 4 | 121 mph | 267 km |
| 2020 | Haishen | Category 4 | 115 mph | 103 km |
| 2020 | Maysak | Category 4 | 109 mph | 289 km |
| 2020 | Bavi | Category 1 | 75 mph | 279 km |
| 2018 | Soulik | Category 3 | 98 mph | 106 km |
| 2018 | Trami | Category 2 | 98 mph | 58 km |
| 2018 | Prapiroon | Category 1 | 75 mph | 185 km |
| 2017 | Saola | Category 1 | 69 mph | 41 km |
| 2017 | Noru | Category 1 | 86 mph | 164 km |
| 2016 | Malakas | Category 3 | 109 mph | 244 km |
| 2016 | Namtheun | Category 3 | 81 mph | 131 km |
| 2015 | Goni | Category 4 | 115 mph | 136 km |
| 2015 | Halola | Category 1 | 75 mph | 225 km |
| 2014 | Phanfone | Category 4 | 109 mph | 187 km |
| 2014 | Vongfong | Category 2 | 98 mph | 205 km |
| 2014 | Halong | Category 1 | 92 mph | 216 km |
| 2013 | Danas | Category 4 | 104 mph | 146 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 2.6 m (8 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1995 | RYUKYU ISLANDS | Earthquake | 2.6 m | - | 86 km |
| 1995 | RYUKYU ISLANDS | Eruption + Earthquake | 1.5 m | - | 80 km |
| 1901 | RYUKYU ISLANDS | Earthquake | 0.3 m | - | 96 km |
| 1911 | RYUKYU ISLANDS | Earthquake | - | 12 | 67 km |
| 1664 | TORISHIMA, RYUKYU ISLANDS | Astronomical | - | - | 111 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Yokoate-jima (80 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yokoate-jima | Stratovolcano(es) | 495 m (1,624 ft) | 1835 | 80 km |
| Io-Torishima | Complex | 212 m (696 ft) | 1968 | 112 km |
| Akusekijima | Stratovolcano(es) | 555 m (1,821 ft) | Unknown | 150 km |
| Suwanosejima | Stratovolcano(es) | 796 m (2,612 ft) | 2020 | 171 km |
| Nakanoshima | Stratovolcano(es) | 979 m (3,212 ft) | 1914 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 59°F (15°C) | 5.3 in | Coldest |
| February | 59°F (15°C) | 5.8 in | |
| March | 63°F (17°C) | 7.0 in | |
| April | 68°F (20°C) | 9.3 in | |
| May | 72°F (22°C) | 11.5 in | |
| June | 78°F (25°C) | 14.1 in | Wettest |
| July | 82°F (28°C) | 8.0 in | Warmest |
| August | 82°F (28°C) | 8.2 in | |
| September | 80°F (27°C) | 7.2 in | |
| October | 75°F (24°C) | 6.6 in | |
| November | 69°F (20°C) | 7.0 in | |
| December | 62°F (17°C) | 4.8 in | Driest |
Seisui has a seasonal temperature swing of 24°F / from 59°F in January to 82°F in July. Total annual precipitation is 94.7 inches, with June being the wettest month (14.1") and December the driest (4.8").