All Countries
Weather & Climate in Union, Philippines
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Union has a warm climate with an average annual temperature of 79°F (26°C). Winters average 77°F in January while summers reach 79°F in July / relatively mild seasonal variation. The area gets 131 sunny days per year, below the national average of 205. Annual precipitation totals 152.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 72 feet.
Temperature
77°F Jan (25°C)
79°F Jul (26°C)
| Annual Average | 79.3°F |
| 47% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 131 days/yr |
Geography
| Elevation | 72 ft (22 m) |
| Area | 37.5 sq mi (97.0 km²) |
| Population Density | 61/sq mi |
| Coordinates | 11.7612°N, 121.8963°W |
| Timezone | Asia/Manila |
Precipitation & Snow
Air Quality
Earthquake History
126 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Jun 14, 1990 | 0 km ESE of Union, Philippines | M7.1 | 0 km | 18 km |
| Sep 1, 2003 | 30 km SE of Tugdan, Philippines | M5.8 | 63 km | 21 km |
| May 4, 2019 | 8 km SW of San Agustin, Philippines | M5.7 | 125 km | 10 km |
| Jul 7, 1990 | 41 km SW of Adela, Philippines | M5.7 | 144 km | 27 km |
| Sep 29, 2000 | 34 km SW of Taclobo, Philippines | M5.6 | 63 km | 33 km |
| Jun 14, 1990 | 19 km SSW of Union, Philippines | M5.6 | 20 km | 18 km |
| Mar 27, 2006 | 0 km NNE of Semirara, Philippines | M5.6 | 64 km | 32 km |
| Jul 23, 1990 | 7 km W of Da-an Sur, Philippines | M5.6 | 74 km | 16 km |
| Jun 14, 1990 | 8 km SSW of Manika, Philippines | M5.5 | 63 km | 23 km |
| Aug 15, 2016 | 21 km SE of Bugasong, Philippines | M5.4 | 101 km | 29 km |
| May 21, 1992 | 2 km NNW of Ponong, Philippines | M5.4 | 108 km | 33 km |
| Dec 20, 1994 | 10 km SSW of Malamig, Philippines | M5.3 | 137 km | 33 km |
| Jun 5, 2020 | 9 km NE of Banos, Philippines | M5.3 | 147 km | 44 km |
| Feb 27, 2000 | 6 km SSW of Hamtic, Philippines | M5.2 | 124 km | 33 km |
| Nov 24, 1994 | 0 km E of Malamig, Philippines | M5.1 | 144 km | 62 km |
| May 27, 1990 | Mindoro, Philippines | M5.1 | 148 km | 33 km |
| Sep 1, 2003 | 21 km ESE of Alcantara, Philippines | M5.1 | 58 km | 22 km |
| Feb 8, 2021 | 48 km SW of Santa Teresa, Philippines | M5.0 | 124 km | 10 km |
| Jun 6, 1991 | 47 km WSW of Adela, Philippines | M5.0 | 149 km | 18 km |
| Sep 1, 2003 | 20 km ESE of Santa Fe, Philippines | M5.0 | 46 km | 19 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
46 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kalmaegi | Category 1 | — | 152 km |
| 2021 | Rai | Category 4 | 109 mph | 186 km |
| 2021 | Conson | Category 1 | — | 195 km |
| 2020 | Goni | Category 5 | 115 mph | 218 km |
| 2020 | Molave | Category 2 | 81 mph | 160 km |
| 2020 | Vongfong | Category 2 | 81 mph | 182 km |
| 2019 | Kammuri | Category 4 | 104 mph | 153 km |
| 2019 | Phanfone | Category 3 | 92 mph | 29 km |
| 2016 | Nock-ten | Category 4 | 115 mph | 184 km |
| 2015 | Melor | Category 4 | 109 mph | 131 km |
| 2014 | Rammasun | Category 4 | 98 mph | 233 km |
| 2014 | Hagupit | Category 2 | 98 mph | 182 km |
| 2013 | Haiyan | Category 5 | 104 mph | 47 km |
| 2012 | Bopha | Category 2 | 75 mph | 243 km |
| 2008 | Fengshen | Category 3 | 104 mph | 71 km |
| 2006 | Durian | Category 4 | 104 mph | 194 km |
| 2006 | Xangsane | Category 4 | 98 mph | 222 km |
| 2006 | Utor | Category 3 | 86 mph | 44 km |
| 2006 | Chanchu | Category 2 | 63 mph | 134 km |
| 2005 | Roke | Category 1 | — | 229 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1948 | SULU SEA | Earthquake | — | 74 | 122 km |
| 1928 | SULU SEA | Earthquake | — | — | 130 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Silay (183 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Silay | Stratovolcano | 1,510 m (4,954 ft) | Unknown | 183 km |
| Mandalagan | Complex | 1,885 m (6,184 ft) | Unknown | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 6.9 in | Coldest |
| February | 78°F (25°C) | 3.4 in | |
| March | 79°F (26°C) | 2.4 in | Driest |
| April | 81°F (27°C) | 2.8 in | |
| May | 82°F (28°C) | 11.2 in | Warmest |
| June | 80°F (27°C) | 14.8 in | |
| July | 79°F (26°C) | 27.0 in | Wettest |
| August | 79°F (26°C) | 22.7 in | |
| September | 79°F (26°C) | 18.7 in | |
| October | 79°F (26°C) | 17.1 in | |
| November | 79°F (26°C) | 15.2 in | |
| December | 78°F (26°C) | 10.2 in |
Union has a seasonal temperature swing of 5°F / from 77°F in January to 82°F in May. Total annual precipitation is 152.1 inches, with July being the wettest month (27.0") and March the driest (2.4").