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Weather & Climate in Nam Sách, Vietnam
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nam Sách has a warm climate with an average annual temperature of 75°F (24°C). Winters average 62°F in January while summers reach 85°F in July. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 69.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 20 feet.
Temperature
62°F Jan (17°C)
85°F Jul (29°C)
| Annual Average | 75.1°F |
| 39% above US avg | |
| January Average | 62°F (17°C) |
| July Average | 85°F (29°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 20 ft (6 m) |
| Area | 27.6 sq mi (71.4 km²) |
| Population Density | 0/sq mi |
| Coordinates | 20.9921°N, 106.3361°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Sep 23, 1994 | 49 km W of Móng Cái, Vietnam | M4.6 | 134 km | 33 km |
| Mar 25, 2024 | 27 km S of Xuân Mai, Vietnam | M4.2 | 90 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
30 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kajiki | Category 2 | — | 270 km |
| 2025 | Matmo | Category 1 | — | 246 km |
| 2025 | Wutip | Category 1 | — | 298 km |
| 2024 | Yagi | Category 3 | 104 mph | 17 km |
| 2016 | Mirinae | Category 1 | 52 mph | 89 km |
| 2014 | Rammasun | Category 3 | 58 mph | 161 km |
| 2014 | Kalmaegi | Category 1 | 75 mph | 81 km |
| 2013 | Haiyan | Category 1 | 75 mph | 100 km |
| 2012 | Son-tinh | Category 3 | 86 mph | 43 km |
| 2008 | Hagupit | Category 1 | — | 265 km |
| 2003 | Krovanh | Category 2 | 75 mph | 81 km |
| 2001 | Durian | Category 1 | 52 mph | 267 km |
| 1997 | Zita | Category 1 | 58 mph | 34 km |
| 1996 | Sally | Category 2 | 63 mph | 157 km |
| 1996 | Niki | Category 2 | 75 mph | 133 km |
| 1996 | Frankie | Category 2 | 58 mph | 77 km |
| 1996 | Willie | Category 1 | 52 mph | 213 km |
| 1995 | Ted | Category 1 | 58 mph | 229 km |
| 1995 | Lois | Category 1 | 58 mph | 188 km |
| 1993 | Lewis | Category 1 | 63 mph | 227 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 0.6 in | Coldest, Driest |
| February | 64°F (18°C) | 1.4 in | |
| March | 68°F (20°C) | 1.5 in | |
| April | 75°F (24°C) | 2.9 in | |
| May | 81°F (27°C) | 8.1 in | |
| June | 84°F (29°C) | 9.3 in | |
| July | 85°F (29°C) | 11.7 in | Warmest, Wettest |
| August | 83°F (28°C) | 11.7 in | |
| September | 81°F (27°C) | 9.2 in | |
| October | 77°F (25°C) | 4.1 in | |
| November | 71°F (22°C) | 1.6 in | |
| December | 65°F (18°C) | 0.8 in |
Nam Sách has a seasonal temperature swing of 23°F / from 62°F in January to 85°F in July. Total annual precipitation is 62.9 inches, with July being the wettest month (11.7") and January the driest (0.6").