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Weather & Climate in Hekou, China
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hekou enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 57°F in January while summers reach 79°F in July. The area gets 219 sunny days per year. Annual precipitation totals 66.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 469 feet.
Temperature
57°F Jan (14°C)
79°F Jul (26°C)
| Annual Average | 70.0°F |
| 30% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 219 days/yr |
Geography
| Elevation | 469 ft (143 m) |
| Area | 294.2 sq mi (762.1 km²) |
| Population Density | 153/sq mi |
| Coordinates | 22.5385°N, 104.0111°W |
| Timezone | Asia/Shanghai |
Precipitation & Snow
Air Quality
Earthquake History
30 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Apr 24, 1995 | 73 km SSW of Gejiu, China | M5.2 | 116 km | 33 km |
| Aug 13, 2005 | 32 km NNW of Wenshan City, China | M4.8 | 121 km | 10 km |
| Jul 19, 2014 | 19 km NNE of S?n La, Vietnam | M4.6 | 117 km | 17 km |
| Mar 29, 1993 | 53 km N of Dien Bien Phu, Vietnam | M4.6 | 120 km | 33 km |
| Oct 6, 1991 | 33 km E of S?n La, Vietnam | M4.5 | 130 km | 10 km |
| May 4, 2016 | 20 km ESE of Gejiu, China | M4.5 | 109 km | 16 km |
| Feb 24, 2016 | 55 km WSW of Sa Pa, Vietnam | M4.5 | 80 km | 10 km |
| May 4, 2016 | 19 km SE of Gejiu, China | M4.5 | 108 km | 15 km |
| May 16, 2025 | 27 km S of Mường Lay, Vietnam | M4.5 | 129 km | 10 km |
| Apr 12, 2002 | 94 km NE of Phôngsali, Laos | M4.5 | 142 km | 10 km |
| Jun 16, 2020 | 100 km NNE of Phôngsali, Laos | M4.5 | 146 km | 10 km |
| Mar 30, 1993 | 55 km N of Dien Bien Phu, Vietnam | M4.4 | 121 km | 33 km |
| Apr 2, 2001 | 74 km WSW of Sa Pa, Vietnam | M4.4 | 99 km | 33 km |
| Nov 9, 1995 | 76 km ENE of Phôngsali, Laos | M4.4 | 143 km | 33 km |
| May 24, 2017 | 22 km ESE of Kaiyuan, China | M4.3 | 132 km | 10 km |
| Jul 9, 2010 | 13 km WSW of Kaiyuan, China | M4.3 | 150 km | 10 km |
| Dec 21, 1993 | 62 km WSW of Sa Pa, Vietnam | M4.3 | 86 km | 10 km |
| Nov 13, 1996 | 100 km NE of Phôngsali, Laos | M4.3 | 130 km | 33 km |
| Jan 7, 2018 | 36 km E of Dien Bien Phu, Vietnam | M4.3 | 145 km | 10 km |
| Jan 8, 2018 | 36 km E of Dien Bien Phu, Vietnam | M4.3 | 146 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Yagi | Category 2 | 63 mph | 244 km |
| 2014 | Rammasun | Category 1 | — | 287 km |
| 2014 | Kalmaegi | Category 1 | 63 mph | 273 km |
| 1997 | Zita | Category 1 | 46 mph | 262 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 0.7 in | Coldest, Driest |
| February | 60°F (15°C) | 1.6 in | |
| March | 66°F (19°C) | 1.5 in | |
| April | 72°F (22°C) | 4.6 in | |
| May | 77°F (25°C) | 8.0 in | |
| June | 79°F (26°C) | 9.7 in | |
| July | 79°F (26°C) | 14.0 in | Warmest, Wettest |
| August | 78°F (26°C) | 10.7 in | |
| September | 76°F (25°C) | 7.9 in | |
| October | 71°F (22°C) | 4.3 in | |
| November | 65°F (18°C) | 2.2 in | |
| December | 59°F (15°C) | 0.9 in |
Hekou has a seasonal temperature swing of 22°F / from 57°F in January to 79°F in July. Total annual precipitation is 66.1 inches, with July being the wettest month (14.0") and January the driest (0.7").