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Weather & Climate in Unisan, Philippines
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Unisan has a warm climate with an average annual temperature of 80°F (27°C). Winters average 77°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 190 sunny days per year. Annual precipitation totals 80.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 13 feet.
Temperature
77°F Jan (25°C)
82°F Jul (28°C)
| Annual Average | 80.4°F |
| 49% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 190 days/yr |
Geography
| Elevation | 13 ft (4 m) |
| Area | 47.9 sq mi (124.1 km²) |
| Population Density | 99/sq mi |
| Coordinates | 13.8413°N, 121.9752°W |
| Timezone | Asia/Manila |
Precipitation & Snow
Air Quality
Earthquake History
691 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Nov 14, 1994 | 10 km E of Sabang, Philippines | M7.1 | 104 km | 32 km |
| Jul 23, 2021 | 15 km S of Hukay, Philippines | M6.7 | 136 km | 110 km |
| Aug 11, 2017 | 1 km SE of Tuy, Philippines | M6.2 | 135 km | 172 km |
| Jun 15, 2023 | Mindoro, Philippines | M6.2 | 136 km | 112 km |
| May 21, 2022 | 1 km S of Lian, Philippines | M6.1 | 144 km | 129 km |
| Jul 20, 1996 | 3 km WNW of Hukay, Philippines | M5.9 | 141 km | 110 km |
| Aug 13, 2021 | 10 km WNW of Tingloy, Philippines | M5.9 | 130 km | 121 km |
| Oct 21, 2000 | 15 km W of Tingloy, Philippines | M5.9 | 136 km | 152 km |
| Apr 8, 2017 | 1 km NNW of Mabini, Philippines | M5.9 | 113 km | 14 km |
| Feb 20, 1994 | 9 km WNW of Tingloy, Philippines | M5.9 | 129 km | 207 km |
| May 12, 2021 | 10 km SSW of Tingloy, Philippines | M5.8 | 125 km | 113 km |
| Jul 23, 2021 | 6 km SE of Hukay, Philippines | M5.8 | 133 km | 121 km |
| Sep 3, 2002 | 8 km N of Wawa, Philippines | M5.8 | 136 km | 10 km |
| May 22, 2011 | 14 km WSW of Tingloy, Philippines | M5.7 | 135 km | 149 km |
| Oct 18, 2009 | 14 km S of Calatagan, Philippines | M5.7 | 143 km | 156 km |
| Feb 3, 1993 | 3 km NNW of Pamplona, Philippines | M5.6 | 121 km | 18 km |
| Feb 18, 1996 | 4 km SE of Balayan, Philippines | M5.6 | 132 km | 242 km |
| Dec 12, 1993 | 3 km SSW of Mambulo, Philippines | M5.6 | 116 km | 22 km |
| Apr 3, 2005 | 9 km NNW of Odala, Philippines | M5.6 | 131 km | 129 km |
| Nov 29, 2000 | 6 km SSE of Calatagan, Philippines | M5.5 | 143 km | 118 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
76 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Fung-wong | Category 4 | — | 177 km |
| 2025 | Matmo | Category 1 | — | 292 km |
| 2024 | Man-yi | Category 4 | 121 mph | 163 km |
| 2024 | Ewiniar | Category 2 | 86 mph | 85 km |
| 2024 | Toraji | Category 1 | 81 mph | 264 km |
| 2023 | Saola | Category 4 | 109 mph | 285 km |
| 2022 | Noru | Category 5 | 109 mph | 140 km |
| 2021 | Conson | Category 1 | — | 48 km |
| 2020 | Goni | Category 5 | 115 mph | 29 km |
| 2020 | Vamco | Category 3 | 86 mph | 119 km |
| 2020 | Molave | Category 2 | 81 mph | 74 km |
| 2020 | Vongfong | Category 2 | 81 mph | 99 km |
| 2019 | Kammuri | Category 4 | 104 mph | 82 km |
| 2019 | Phanfone | Category 3 | 92 mph | 197 km |
| 2016 | Nock-ten | Category 4 | 115 mph | 51 km |
| 2016 | Sarika | Category 4 | 109 mph | 178 km |
| 2015 | Melor | Category 4 | 109 mph | 96 km |
| 2015 | Koppu | Category 4 | 115 mph | 240 km |
| 2014 | Rammasun | Category 4 | 98 mph | 18 km |
| 2014 | Hagupit | Category 2 | 98 mph | 161 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
8 tsunamis recorded within 500 km. Highest wave on record: 7.3 m (24 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1994 | PHILIPPINE ISLANDS | Earthquake | 7.3 m | 81 | 104 km |
| 1965 | TAAL, LUZON ISLAND | Astronomical | 4.7 m | 355 | 108 km |
| 1911 | TAAL, LUZON ISLAND | Astronomical | 3.0 m | 1,335 | 108 km |
| 1973 | QUEZON | Earthquake | 1.3 m | 15 | 102 km |
| 1889 | MINDORO ISLAND | Earthquake | 0.1 m | — | 112 km |
| 1937 | W. LUZON ISLAND | Earthquake | — | 1 | 89 km |
| 1749 | TAAL, LUZON ISLAND | Astronomical | — | — | 108 km |
| 1716 | TAAL, LUZON ISLAND | Astronomical | — | — | 108 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Banahaw (59 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Banahaw | Complex | 2,158 m (7,080 ft) | Unknown | 59 km |
| San Pablo Volcanic Field | Stratovolcano | 1,090 m (3,576 ft) | 1350 | 79 km |
| Laguna Caldera | Caldera | 743 m (2,438 ft) | Unknown | 100 km |
| Taal | Caldera | 311 m (1,020 ft) | 2020 | 108 km |
| Isarog | Stratovolcano | 1,966 m (6,450 ft) | -3500 | 153 km |
| Mariveles | Stratovolcano | 1,388 m (4,554 ft) | -2050 | 178 km |
| Natib | Stratovolcano | 1,253 m (4,111 ft) | Unknown | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 4.7 in | Coldest |
| February | 78°F (25°C) | 2.6 in | |
| March | 79°F (26°C) | 2.3 in | Driest |
| April | 82°F (28°C) | 2.4 in | |
| May | 83°F (28°C) | 4.4 in | Warmest |
| June | 83°F (28°C) | 6.7 in | |
| July | 82°F (28°C) | 6.9 in | |
| August | 82°F (28°C) | 7.2 in | |
| September | 81°F (27°C) | 7.5 in | |
| October | 81°F (27°C) | 12.1 in | |
| November | 80°F (26°C) | 12.2 in | Wettest |
| December | 78°F (26°C) | 11.6 in |
Unisan has a seasonal temperature swing of 6°F / from 77°F in January to 83°F in May. Total annual precipitation is 80.4 inches, with November being the wettest month (12.2") and March the driest (2.3").