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Weather & Climate in Nagasaki, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nagasaki experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 73°F in July. The area gets 241 sunny days per year, above the national average. Annual precipitation totals 52.1 inches (wetter than the 38-inch national average). The area receives 11.3 inches of snow annually. The city sits at an elevation of 285 feet.
Temperature
30°F Jan (-1°C)
73°F Jul (23°C)
| Annual Average | 51.8°F |
| 4% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 241 days/yr |
Geography
| Elevation | 285 ft (87 m) |
| Area | 14.4 sq mi (37.2 km²) |
| Population Density | 748/sq mi |
| Coordinates | 38.3264°N, 140.2764°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
1,322 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.3.
| Mar 16, 2022 | 57 km ENE of Namie, Japan | M7.3 | 133 km | 41 km |
| Apr 7, 2011 | 29 km ESE of Ishinomaki, Japan | M7.1 | 115 km | 42 km |
| Feb 13, 2021 | 73 km ENE of Namie, Japan | M7.1 | 147 km | 44 km |
| May 26, 2003 | 27 km SSW of ?funato, Japan | M7.0 | 126 km | 68 km |
| Mar 20, 2021 | 30 km E of Ishinomaki, Japan | M7.0 | 120 km | 43 km |
| Jun 13, 2008 | 24 km WSW of Mizusawa, Japan | M6.9 | 94 km | 8 km |
| May 1, 2021 | 30 km SSE of Onagawa Ch?, Japan | M6.9 | 116 km | 43 km |
| Apr 11, 2011 | 17 km SSW of Ishikawa, Japan | M6.6 | 148 km | 11 km |
| Dec 2, 2001 | 3 km NW of Hanamaki, Japan | M6.5 | 139 km | 124 km |
| Mar 14, 2010 | 59 km ENE of Namie, Japan | M6.5 | 132 km | 32 km |
| Jun 18, 2019 | 31 km WSW of Tsuruoka, Japan | M6.4 | 78 km | 12 km |
| Jul 24, 2011 | 43 km NE of Namie, Japan | M6.3 | 118 km | 40 km |
| Aug 4, 2019 | 61 km ENE of Namie, Japan | M6.3 | 132 km | 38 km |
| Jul 23, 2011 | 21 km SSE of ?funato, Japan | M6.3 | 148 km | 41 km |
| Mar 11, 2011 | 30 km NNE of Namie, Japan | M6.3 | 105 km | 32 km |
| Mar 25, 2011 | 36 km SSE of ?funato, Japan | M6.2 | 148 km | 39 km |
| Aug 19, 2011 | 61 km ENE of Namie, Japan | M6.2 | 141 km | 47 km |
| Mar 12, 2011 | 55 km SE of Ishinomaki, Japan | M6.1 | 130 km | 15 km |
| Mar 12, 2011 | 29 km SSE of Namie, Japan | M6.1 | 143 km | 38 km |
| Jul 25, 2003 | 7 km NW of Matsushima, Japan | M6.1 | 64 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
15 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Faxai | Category 2 | 92 mph | 211 km |
| 2019 | Hagibis | Category 1 | 75 mph | 134 km |
| 2011 | Roke | Category 1 | 81 mph | 286 km |
| 2005 | Mawar | Category 1 | 69 mph | 263 km |
| 2004 | Ma-on | Category 2 | 63 mph | 201 km |
| 2002 | Higos | Category 1 | 75 mph | 48 km |
| 2001 | Danas | Category 1 | 63 mph | 215 km |
| 2000 | Kirogi | Category 1 | 69 mph | 162 km |
| 1998 | Vicki | Category 2 | 63 mph | 79 km |
| 1998 | Stella | Category 1 | 63 mph | 242 km |
| 1996 | Violet | Category 1 | 81 mph | 264 km |
| 1995 | Ryan | Category 1 | 40 mph | 249 km |
| 1993 | Vernon | Category 1 | 69 mph | 165 km |
| 1981 | Thad | Category 1 | — | 259 km |
| 1981 | Gay | Category 1 | 75 mph | 291 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
15 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1833 | NW. HONSHU ISLAND | Earthquake | 9.0 m | 85 | 117 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 5.8 m | 36 | 91 km |
| 1835 | SANRIKU | Earthquake | 5.0 m | — | 150 km |
| 2008 | ARATOZAWA, JAPAN | Eruption + Earthquake | 2.5 m | 23 | 94 km |
| 2016 | E. COAST HONSHU ISLAND | Earthquake | 1.4 m | — | 142 km |
| 1897 | SANRIKU | Earthquake | 1.0 m | — | 144 km |
| 1804 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 450 | 85 km |
| 2022 | OFF FUKUSHIMA PREFECTURE | Earthquake | 0.3 m | 4 | 133 km |
| 2019 | NIIGATA | Earthquake | 0.1 m | — | 79 km |
| 2021 | OFF FUKUSHIMA PREFECTURE | Earthquake | 0.1 m | 1 | 144 km |
| 2011 | E. COAST HONSHU ISLAND | Earthquake | 0.1 m | 3 | 115 km |
| 1894 | YAMAGATA, JAPAN | Earthquake | — | 726 | 76 km |
| 1762 | NW. HONSHU ISLAND | Earthquake | — | — | 140 km |
| 1644 | HONJO, AKITA | Earthquake | — | 117 | 120 km |
| 850 | NW. HONSHU ISLAND | Eruption + Earthquake | — | — | 82 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Zaozan [Zaosan] (25 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Zaozan [Zaosan] | Complex | 1,841 m (6,040 ft) | 1940 | 25 km |
| Naruko | Caldera | 470 m (1,542 ft) | 837 | 60 km |
| Azumayama | Stratovolcano(es) | 1,949 m (6,394 ft) | 1977 | 66 km |
| Adatarayama | Stratovolcano(es) | 1,728 m (5,669 ft) | 1996 | 76 km |
| Bandaisan | Stratovolcano | 1,816 m (5,958 ft) | 1888 | 83 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 83 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 88 km |
| Numazawa | Shield | 835 m (2,740 ft) | -3400 | 116 km |
| Nasudake | Stratovolcano(es) | 1,915 m (6,283 ft) | 1963 | 136 km |
| Takaharayama | Stratovolcano | 1,795 m (5,889 ft) | -4570 | 165 km |
| Akita-Komagatake | Stratovolcano(es) | 1,637 m (5,371 ft) | 1971 | 166 km |
| Hiuchigatake | Stratovolcano | 2,356 m (7,730 ft) | 1544 | 176 km |
| Iwatesan | Complex | 2,038 m (6,686 ft) | 1919 | 181 km |
| Omanago Group | Lava dome(s) | 2,341 m (7,680 ft) | -3050 | 183 km |
| Megata | Maar(s) | 291 m (955 ft) | -2050 | 187 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 4.0 in | Coldest |
| February | 30°F (-1°C) | 3.3 in | |
| March | 36°F (2°C) | 3.1 in | Driest |
| April | 49°F (9°C) | 3.2 in | |
| May | 59°F (15°C) | 3.4 in | |
| June | 66°F (19°C) | 4.7 in | |
| July | 73°F (23°C) | 6.2 in | Wettest |
| August | 76°F (24°C) | 6.1 in | Warmest |
| September | 67°F (20°C) | 5.8 in | |
| October | 56°F (13°C) | 4.3 in | |
| November | 45°F (7°C) | 4.1 in | |
| December | 35°F (2°C) | 4.1 in |
Nagasaki has a seasonal temperature swing of 46°F / from 30°F in January to 76°F in August. Total annual precipitation is 52.1 inches, with July being the wettest month (6.2") and March the driest (3.1").