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Weather & Climate in Cô Tô, Vietnam
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Cô Tô has a warm climate with an average annual temperature of 73°F (23°C). Winters average 61°F in January while summers reach 83°F in July. The area gets 217 sunny days per year. Annual precipitation totals 68.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 30 feet.
Temperature
61°F Jan (16°C)
83°F Jul (28°C)
| Annual Average | 73.3°F |
| 36% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 217 days/yr |
Geography
| Elevation | 30 ft (9 m) |
| Area | 590.0 sq mi (1,528.0 km²) |
| Population Density | 11/sq mi |
| Coordinates | 20.9727°N, 107.7658°W |
| Timezone | Asia/Bangkok |
Precipitation & Snow
Air Quality
Earthquake History
3 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 | 69 km | 33 km |
| Jun 23, 2023 | southeastern China | M4.6 | 125 km | 14 km |
| Apr 3, 2006 | 111 km SSE of Cát Bà, Vietnam | M4.0 | 128 km | 25 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
42 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Matmo | Category 2 | — | 128 km |
| 2025 | Wutip | Category 1 | — | 158 km |
| 2024 | Yagi | Category 3 | 109 mph | 35 km |
| 2023 | Talim | Category 1 | 63 mph | 170 km |
| 2016 | Mirinae | Category 1 | 52 mph | 184 km |
| 2015 | Mujigae | Category 3 | 98 mph | 202 km |
| 2014 | Rammasun | Category 4 | 104 mph | 107 km |
| 2014 | Kalmaegi | Category 1 | 86 mph | 47 km |
| 2013 | Haiyan | Category 1 | 75 mph | 49 km |
| 2012 | Son-tinh | Category 3 | 86 mph | 100 km |
| 2012 | Kai-tak | Category 1 | 69 mph | 222 km |
| 2010 | Chanthu | Category 1 | 81 mph | 287 km |
| 2008 | Hagupit | Category 2 | 69 mph | 141 km |
| 2005 | Damrey | Category 1 | 81 mph | 274 km |
| 2003 | Krovanh | Category 2 | 75 mph | 44 km |
| 2003 | Nepartak | Category 1 | 63 mph | 264 km |
| 2003 | Imbudo | Category 1 | 58 mph | 247 km |
| 2001 | Durian | Category 1 | 58 mph | 134 km |
| 2000 | Wukong | Category 2 | 81 mph | 277 km |
| 1997 | Zita | Category 1 | 63 mph | 26 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 1.0 in | Coldest |
| February | 63°F (17°C) | 1.2 in | |
| March | 66°F (19°C) | 1.8 in | |
| April | 72°F (22°C) | 2.9 in | |
| May | 79°F (26°C) | 6.2 in | |
| June | 82°F (28°C) | 9.3 in | |
| July | 83°F (28°C) | 12.6 in | Warmest |
| August | 82°F (28°C) | 15.6 in | Wettest |
| September | 81°F (27°C) | 10.7 in | |
| October | 77°F (25°C) | 4.5 in | |
| November | 70°F (21°C) | 2.1 in | |
| December | 63°F (17°C) | 0.8 in | Driest |
Cô Tô has a seasonal temperature swing of 22°F / from 61°F in January to 83°F in July. Total annual precipitation is 68.6 inches, with August being the wettest month (15.6") and December the driest (0.8").