Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hirao enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 41°F in January while summers reach 78°F in July. The area gets 213 sunny days per year. Annual precipitation totals 67.8 inches (wetter than the 38-inch national average). The city sits at an elevation of -7 feet.
Temperature
41°F Jan (5°C)78°F Jul (26°C)
Annual Average
59.3°F
10% above US avg
January Average
41°F (5°C)
July Average
78°F (26°C)
Sunny Days
213 days/yr
Geography
Elevation
-7 ft (-2 m)
Area
27.4 sq mi (71.0 km²)
Population Density
435/sq mi
Coordinates
33.9383°N, 132.0717°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall67.8"
78% above US avg
Snowfall0.0"
Wettest Month (Jun)11.06"
Driest Month (Dec)1.85"
Air Quality
Earthquake History
200 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M6.8.
Mar 24, 2001
16 km SSW of Kure, Japan
M6.8
45 km
50 km
Jun 11, 2006
15 km S of Tsukawaki, Japan
M6.3
124 km
140 km
Mar 13, 2014
32 km SSW of Hikari, Japan
M6.3
36 km
79 km
Jan 21, 2022
27 km SSE of Saiki, Japan
M6.3
135 km
39 km
Apr 17, 2024
18 km W of Uwajima, Japan
M6.3
81 km
32 km
Jun 25, 1997
17 km E of Hagi, Japan
M5.9
67 km
10 km
Apr 25, 2001
18 km SE of Saiki, Japan
M5.7
124 km
33 km
Apr 18, 2016
8 km NNE of Aso, Japan
M5.5
137 km
10 km
May 22, 1998
9 km NE of Bungo-Takada-shi, Japan
M5.5
62 km
81 km
Mar 27, 2006
45 km SSE of Saiki, Japan
M5.5
149 km
35 km
Apr 15, 2016
10 km NE of Aso, Japan
M5.5
134 km
13 km
Jul 12, 2015
12 km SSW of Usuki, Japan
M5.5
106 km
53 km
Apr 15, 2016
5 km WSW of Aso, Japan
M5.4
149 km
4 km
Mar 2, 2017
39 km SSE of Saiki, Japan
M5.3
145 km
44 km
Oct 28, 1991
13 km SSW of Ube, Japan
M5.2
79 km
17 km
Jul 17, 2021
29 km NE of Kitsuki, Japan
M5.2
42 km
64 km
Mar 25, 2001
22 km WNW of H?j?, Japan
M5.2
44 km
43 km
Apr 15, 2016
13 km SW of Saiki, Japan
M5.1
123 km
10 km
Apr 15, 2016
11 km WSW of Beppu, Japan
M5.1
100 km
10 km
Apr 2, 1997
34 km WSW of ?zu, Japan
M5.1
66 km
46 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
53 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 3.
Year
Name
Category
Max Wind
Closest
2024
Shanshan
Category 2
98 mph
230 km
2022
Nanmadol
Category 2
98 mph
141 km
2022
Hinnamnor
Category 1
81 mph
298 km
2020
Haishen
Category 2
98 mph
275 km
2019
Francisco
Category 1
81 mph
179 km
2018
Jebi
Category 3
98 mph
218 km
2018
Trami
Category 1
98 mph
202 km
2018
Cimaron
Category 1
92 mph
235 km
2018
Prapiroon
Category 1
69 mph
266 km
2017
Noru
Category 1
69 mph
177 km
2016
Malakas
Category 1
86 mph
183 km
2015
Goni
Category 3
104 mph
145 km
2015
Nangka
Category 1
86 mph
232 km
2014
Phanfone
Category 2
92 mph
284 km
2014
Halong
Category 1
81 mph
155 km
2011
Ma-on
Category 1
86 mph
173 km
2008
Sinlaku
Category 1
75 mph
247 km
2007
Usagi
Category 3
98 mph
73 km
2007
Man-yi
Category 1
86 mph
153 km
2006
Shanshan
Category 1
92 mph
154 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
7 tsunamis recorded within 500 km.
Highest wave on record: 10.0 m (33 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1026
OFF MASUDA, SHIMANE PREFECTURE
Earthquake
10.0 m
1,001
99 km
1596
BEPPU BAY, KYUSHU
Eruption + Earthquake
8.0 m
708
79 km
1872
SW. HONSHU ISLAND
Earthquake
3.0 m
804
107 km
1899
SEIKAIDO
Earthquake
—
—
139 km
1715
SEIKAIDO
Earthquake
—
—
79 km
1698
SEIKAIDO-NANKAIDO
Earthquake
—
—
79 km
1597
BEPPU BAY, JAPAN
Eruption + Earthquake
—
40
83 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km.
Closest: Abu (76 km).
Name
Type
Elevation
Last Eruption
Distance
Abu
Shield(s)
641 m (2,103 ft)
-6850
76 km
Yufu-Tsurumi
Lava dome(s)
1,584 m (5,197 ft)
867
97 km
Kujusan
Stratovolcano(es)
1,791 m (5,876 ft)
1996
122 km
Sanbesan
Stratovolcano
1,126 m (3,694 ft)
650
143 km
Asosan
Caldera
1,592 m (5,223 ft)
2020
148 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
41°F (5°C)
2.1 in
Coldest
February
41°F (5°C)
3.0 in
March
47°F (8°C)
4.8 in
April
56°F (13°C)
7.3 in
May
64°F (18°C)
7.3 in
June
70°F (21°C)
11.1 in
Wettest
July
78°F (26°C)
9.8 in
August
80°F (27°C)
5.4 in
Warmest
September
73°F (23°C)
7.8 in
October
64°F (18°C)
4.4 in
November
54°F (12°C)
3.0 in
December
45°F (7°C)
1.9 in
Driest
Hirao has a seasonal temperature swing of 39°F / from 41°F in January to 80°F in August. Total annual precipitation is 67.8 inches, with June being the wettest month (11.1") and December the driest (1.9").