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Union, Philippines

Full City Profile

4,581 Population 14/sq mi density
56 ft Elevation 17 meters
82°F Avg Temperature 28°C
Union has a warm climate with an average annual temperature of 82°F (28°C). Winters average 79°F in January while summers reach 83°F in July. The area gets 210 sunny days per year. Annual precipitation totals 69.6 inches. The area receives 0.0 inches of snow annually.

Temperature

79°F Jan (26°C) 83°F Jul (28°C)
Annual Average81.7°F
51% above US avg
January Average79°F (26°C)
July Average83°F (28°C)
Sunny Days210 days/yr

Geography

Elevation56 ft (17 m)
Area327.2 sq mi (847.5 km²)
Population Density14/sq mi
Coordinates10.6695°N, 124.3252°W
TimezoneAsia/Manila

Precipitation & Snow

Annual Rainfall 69.6"
83% above US avg
Snowfall 0.0"
Wettest Month (Nov) 8.54"
Driest Month (Apr) 2.48"

Air Quality

Earthquake History

673 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.1. Most recent: M4.3 on May 23, 2025.

Oct 15, 2013 4 km SE of Sagbayan, Philippines M7.1 91 km
Feb 8, 1990 13 km E of Bacong, Philippines M6.8 109 km
Feb 6, 2012 2 km NNE of Jimalalud, Philippines M6.7 143 km
Feb 8, 1990 6 km ESE of Bacong, Philippines M6.6 110 km
Feb 10, 2017 11 km N of Mabua, Philippines M6.5 150 km
Jul 6, 2017 2 km S of Lim-oo, Philippines M6.5 61 km
Sep 28, 1996 22 km E of San Francisco, Philippines M6.3 134 km
May 20, 2017 25 km S of Alburquerque, Philippines M6.0 149 km
Jul 5, 1994 11 km NE of Hinundayan, Philippines M5.9 112 km
Jul 10, 2017 5 km NW of San Pedro, Philippines M5.8 61 km
May 3, 2024 27 km SSW of Balangiga, Philippines M5.7 112 km
Jan 22, 2025 3 km NNW of San Francisco, Philippines M5.7 111 km
Oct 15, 2013 11 km W of Loon, Philippines M5.7 120 km
May 17, 1993 5 km SW of Pastrana, Philippines M5.7 75 km
May 6, 1991 8 km ENE of Hinundayan, Philippines M5.7 115 km
May 23, 2003 5 km ENE of Limbuhan, Philippines M5.6 139 km
May 8, 2000 11 km NNE of Talisayan, Philippines M5.6 61 km
Oct 24, 1993 16 km SW of Cabay, Philippines M5.6 138 km
Feb 6, 2012 3 km WNW of McKinley, Philippines M5.6 136 km
Oct 15, 2013 4 km E of Buenavista, Philippines M5.6 93 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

40 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 5.

Year Name Category Closest
2025 Kalmaegi Category 2 49 km
2021 Rai Category 5 65 km
2020 Vongfong Category 3 181 km
2019 Kammuri Category 4 251 km
2019 Phanfone Category 3 103 km
2015 Melor Category 4 217 km
2015 Mekkhala Category 1 211 km
2014 Hagupit Category 4 143 km
2014 Rammasun Category 3 252 km
2013 Haiyan Category 5 64 km
2012 Bopha Category 3 217 km
2008 Fengshen Category 3 115 km
2006 Xangsane Category 4 240 km
2006 Utor Category 3 96 km
2006 Chanchu Category 2 195 km
2005 Roke Category 1 63 km
2004 Nida Category 5 256 km
2000 Xangsane Category 1 279 km
1998 Faith Category 1 138 km
1995 Zack Category 2 20 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 12.0 m (39 ft).

Year Location Cause Max Wave Deaths Distance
2022 ABUYOG, LEYTE Meteorological 12.0 m 170 78 km
2012 TANON STRAIT Earthquake 5.0 m 51 143 km
1990 PHILIPPINES Earthquake 2.1 m 6 109 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

7 volcanoes within 200 km. Closest: Mahagnao (66 km).

Name Type Elevation Last Eruption Distance
Mahagnao Stratovolcano 860 m (2,822 ft) Unknown 66 km
Biliran Compound 1,301 m (4,268 ft) 1939 98 km
Cabalían Stratovolcano 912 m (2,992 ft) 1820 107 km
Mandalagan Complex 1,885 m (6,184 ft) Unknown 118 km
Silay Stratovolcano 1,510 m (4,954 ft) Unknown 120 km
Kanlaon Stratovolcano 2,435 m (7,989 ft) 2017 134 km
Camiguin Stratovolcano(es) 1,552 m (5,092 ft) 1953 168 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 79°F (26°C) 5.8 in Coldest
February 80°F (26°C) 3.9 in
March 81°F (27°C) 2.8 in
April 83°F (28°C) 2.5 in Driest
May 84°F (29°C) 4.2 in Warmest
June 83°F (29°C) 6.9 in
July 83°F (28°C) 7.1 in
August 83°F (28°C) 6.3 in
September 82°F (28°C) 7.6 in
October 82°F (28°C) 8.2 in
November 81°F (27°C) 8.5 in Wettest
December 80°F (27°C) 6.0 in

Union has a seasonal temperature swing of 5°F / from 79°F in January to 84°F in May. Total annual precipitation is 69.6 inches, with November being the wettest month (8.5") and April the driest (2.5").

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