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Weather & Climate in San Juan, Philippines
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Juan has a warm climate with an average annual temperature of 80°F (27°C). Winters average 79°F in January while summers reach 80°F in July / relatively mild seasonal variation. The area gets 328 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 101.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 66 feet.
Temperature
79°F Jan (26°C)
80°F Jul (27°C)
| Annual Average | 80.0°F |
| 48% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 328 days/yr |
Geography
| Elevation | 66 ft (20 m) |
| Area | 24.9 sq mi (64.4 km²) |
| Population Density | 127/sq mi |
| Coordinates | 17.7422°N, 120.4583°W |
| Timezone | Asia/Manila |
Precipitation & Snow
Air Quality
Earthquake History
592 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Jul 27, 2022 | 11 km NE of Bantay, Philippines | M7.0 | 45 km | 34 km |
| Jul 17, 1990 | 14 km NNW of Salinas, Philippines | M6.5 | 149 km | 23 km |
| Mar 19, 1992 | 7 km NNW of Besao, Philippines | M6.3 | 76 km | 15 km |
| Mar 22, 2010 | 9 km SSW of Bangui, Philippines | M5.9 | 84 km | 32 km |
| Apr 8, 1997 | 29 km ENE of Piddig, Philippines | M5.8 | 82 km | 71 km |
| May 6, 1998 | 19 km NW of Claveria, Philippines | M5.8 | 120 km | 33 km |
| Jun 5, 1995 | 14 km SE of Bangui, Philippines | M5.8 | 88 km | 48 km |
| Jun 19, 2000 | 4 km WNW of Santa Maria, Philippines | M5.7 | 86 km | 33 km |
| Jun 14, 2000 | 24 km W of Tamorong, Philippines | M5.7 | 55 km | 63 km |
| Jul 18, 2000 | 15 km ESE of Espiritu, Philippines | M5.7 | 39 km | 33 km |
| Mar 13, 2001 | 18 km NNE of Namuac, Philippines | M5.7 | 140 km | 33 km |
| Sep 14, 2003 | 8 km NW of Claveria, Philippines | M5.7 | 119 km | 64 km |
| Jan 13, 2008 | 4 km SSE of Bontoc, Philippines | M5.7 | 96 km | 10 km |
| Jul 23, 1990 | 6 km S of Loacan, Philippines | M5.6 | 141 km | 20 km |
| Jul 16, 1990 | 19 km NNW of Salinas, Philippines | M5.6 | 145 km | 16 km |
| Mar 2, 2019 | 30 km NW of Davila, Philippines | M5.6 | 102 km | 16 km |
| Oct 7, 2012 | 16 km E of Pagudpud, Philippines | M5.6 | 103 km | 40 km |
| Jul 18, 1990 | 13 km WNW of Busilak, Philippines | M5.6 | 149 km | 14 km |
| Dec 4, 2001 | 64 km NNW of Davila, Philippines | M5.6 | 138 km | 33 km |
| Apr 24, 2001 | 9 km ESE of Davila, Philippines | M5.5 | 81 km | 51 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
102 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Ragasa | Category 5 | — | 184 km |
| 2025 | Fung-wong | Category 3 | — | 124 km |
| 2025 | Co-may | Category 1 | — | 209 km |
| 2025 | Matmo | Category 1 | — | 95 km |
| 2024 | Yinxing | Category 4 | 115 mph | 85 km |
| 2024 | Man-yi | Category 4 | 115 mph | 86 km |
| 2024 | Usagi | Category 4 | 109 mph | 146 km |
| 2024 | Yagi | Category 1 | 81 mph | 295 km |
| 2024 | Toraji | Category 1 | 81 mph | 107 km |
| 2023 | Saola | Category 5 | 121 mph | 268 km |
| 2023 | Doksuri | Category 4 | 115 mph | 163 km |
| 2022 | Noru | Category 4 | 98 mph | 256 km |
| 2022 | Ma-on | Category 1 | — | 187 km |
| 2022 | Nesat | Category 1 | 63 mph | 212 km |
| 2021 | Chanthu | Category 5 | 132 mph | 263 km |
| 2020 | Vamco | Category 2 | 81 mph | 283 km |
| 2019 | Kalmaegi | Category 2 | 81 mph | 202 km |
| 2018 | Mangkhut | Category 5 | 127 mph | 47 km |
| 2018 | Yutu | Category 3 | 92 mph | 125 km |
| 2016 | Sarika | Category 4 | 109 mph | 182 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 1.0 m (3 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1988 | NORTH OF LUZON ISLAND | Earthquake | 1.0 m | — | 113 km |
| 2022 | N. LUZON ISLAND | Earthquake | 0.1 m | 11 | 45 km |
| 1983 | LUZON ISLAND | Earthquake | — | 16 | 69 km |
| 1915 | W. LUZON ISLAND | Earthquake | — | — | 105 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Ambalatungan Group (83 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ambalatungan Group | Compound | 2,329 m (7,641 ft) | Unknown | 83 km |
| Cagua | Stratovolcano | 1,133 m (3,717 ft) | 1860 | 184 km |
| Camiguin de Babuyanes | Stratovolcano | 712 m (2,336 ft) | 1857 | 191 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 0.2 in | Driest |
| February | 78°F (25°C) | 0.2 in | Coldest |
| March | 80°F (27°C) | 0.4 in | |
| April | 83°F (28°C) | 1.0 in | |
| May | 84°F (29°C) | 8.9 in | Warmest |
| June | 83°F (28°C) | 14.8 in | |
| July | 80°F (27°C) | 24.3 in | |
| August | 81°F (27°C) | 25.5 in | Wettest |
| September | 81°F (27°C) | 12.2 in | |
| October | 81°F (27°C) | 5.8 in | |
| November | 80°F (27°C) | 1.9 in | |
| December | 78°F (26°C) | 0.5 in |
San Juan has a seasonal temperature swing of 6°F / from 78°F in February to 84°F in May. Total annual precipitation is 95.6 inches, with August being the wettest month (25.5") and January the driest (0.2").