Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Basuo has a warm climate with an average annual temperature of 77°F (25°C). Winters average 67°F in January while summers reach 85°F in July / relatively mild seasonal variation. The area gets 261 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 41.3 inches. The city sits at an elevation of 56 feet.
Temperature
67°F Jan (20°C)85°F Jul (29°C)
Annual Average
77.4°F
43% above US avg
January Average
67°F (20°C)
July Average
85°F (29°C)
Sunny Days
261 days/yr
Geography
Elevation
56 ft (17 m)
Area
877.5 sq mi (2,272.6 km²)
Population Density
507/sq mi
Coordinates
19.1027°N, 108.6657°W
Timezone
Asia/Shanghai
Precipitation & Snow
Annual Rainfall41.3"
9% above US avg
Snowfall0.0"
Wettest Month (Aug)7.99"
Driest Month (Jan)0.35"
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M5.5.
Jan 10, 1995
64 km WNW of Lincheng, China
M5.5
133 km
33 km
Jun 5, 1995
122 km NW of Sanya, China
M4.4
17 km
10 km
Feb 25, 1996
49 km WNW of Lincheng, China
M4.1
116 km
20 km
Apr 3, 2006
111 km SSE of Cát Bà, Vietnam
M4.0
143 km
25 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
63 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 5.
Year
Name
Category
Max Wind
Closest
2025
Matmo
Category 2
—
262 km
2025
Kajiki
Category 2
—
115 km
2025
Bualoi
Category 1
—
220 km
2025
Wutip
Category 1
—
141 km
2024
Yagi
Category 4
121 mph
138 km
2023
Talim
Category 1
69 mph
267 km
2020
Vamco
Category 2
75 mph
245 km
2017
Doksuri
Category 2
92 mph
177 km
2016
Sarika
Category 1
69 mph
130 km
2016
Mirinae
Category 1
52 mph
286 km
2015
Mujigae
Category 4
98 mph
295 km
2014
Rammasun
Category 5
104 mph
204 km
2014
Kalmaegi
Category 1
86 mph
192 km
2013
Wutip
Category 2
75 mph
199 km
2013
Haiyan
Category 2
86 mph
59 km
2013
Rumbia
Category 1
—
278 km
2012
Son-tinh
Category 3
98 mph
138 km
2012
Kai-tak
Category 1
75 mph
257 km
2011
Nesat
Category 1
75 mph
267 km
2010
Mindulle
Category 1
52 mph
182 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km.
Highest wave on record: 0.8 m (3 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1992
SOUTH CHINA SEA
Eruption + Earthquake
0.8 m
—
141 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km.
Closest: Hainan Volcanic Field (187 km).
Name
Type
Elevation
Last Eruption
Distance
Hainan Volcanic Field
Pyroclastic cone(s)
196 m (643 ft)
1933
187 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
67°F (20°C)
0.4 in
Coldest, Driest
February
69°F (20°C)
0.6 in
March
73°F (23°C)
0.9 in
April
79°F (26°C)
1.5 in
May
84°F (29°C)
3.0 in
June
85°F (29°C)
5.9 in
Warmest
July
85°F (29°C)
5.1 in
August
84°F (29°C)
8.0 in
Wettest
September
82°F (28°C)
7.1 in
October
79°F (26°C)
6.5 in
November
74°F (23°C)
1.8 in
December
69°F (20°C)
0.6 in
Basuo has a seasonal temperature swing of 18°F / from 67°F in January to 85°F in June. Total annual precipitation is 41.3 inches, with August being the wettest month (8.0") and January the driest (0.4").
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