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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 81°F in July / relatively mild seasonal variation. The area gets 329 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 94.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 49 feet.
Temperature
79°F Jan (26°C)
81°F Jul (27°C)
| Annual Average | 80.1°F |
| 48% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 329 days/yr |
Geography
| Elevation | 49 ft (15 m) |
| Area | 35.0 sq mi (90.7 km²) |
| Population Density | 0/sq mi |
| Coordinates | 9.1603°N, 123.4926°W |
| Timezone | Asia/Manila |
Precipitation & Snow
Air Quality
Earthquake History
459 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Oct 15, 2013 | 4 km SE of Sagbayan, Philippines | M7.1 | 105 km | 19 km |
| Feb 8, 1990 | 13 km E of Bacong, Philippines | M6.8 | 147 km | 26 km |
| Feb 6, 2012 | 2 km NNE of Jimalalud, Philippines | M6.7 | 98 km | 11 km |
| Feb 8, 1990 | 6 km ESE of Bacong, Philippines | M6.6 | 139 km | 30 km |
| Jul 11, 2011 | 33 km WSW of Cayhagan, Philippines | M6.4 | 150 km | 19 km |
| May 20, 2017 | 25 km S of Alburquerque, Philippines | M6.0 | 56 km | 533 km |
| Feb 6, 2012 | 0 km NW of Amdos, Philippines | M6.0 | 92 km | 9 km |
| May 23, 1998 | 6 km WNW of Tabid, Philippines | M6.0 | 117 km | 658 km |
| Jul 1, 2019 | 48 km S of Valencia, Philippines | M5.9 | 77 km | 533 km |
| May 13, 1994 | 6 km SW of Balagon, Philippines | M5.9 | 136 km | 33 km |
| Feb 6, 2012 | 6 km WNW of Tiguib, Philippines | M5.8 | 86 km | 15 km |
| Nov 14, 2012 | 1 km W of Kaliling, Philippines | M5.7 | 145 km | 41 km |
| Oct 15, 2013 | 11 km W of Loon, Philippines | M5.7 | 74 km | 16 km |
| Oct 15, 2013 | 4 km E of Buenavista, Philippines | M5.6 | 113 km | 7 km |
| Feb 6, 2012 | 3 km WNW of McKinley, Philippines | M5.6 | 108 km | 10 km |
| Feb 26, 2004 | 9 km NNW of Josefina, Philippines | M5.5 | 97 km | 12 km |
| Dec 18, 1991 | 39 km SSE of Alburquerque, Philippines | M5.5 | 65 km | 519 km |
| Jul 12, 2011 | 13 km WSW of Sipalay, Philippines | M5.4 | 144 km | 10 km |
| Nov 15, 2001 | 10 km SSE of Candoni, Philippines | M5.4 | 114 km | 33 km |
| Apr 28, 1992 | 50 km NW of Matangad, Philippines | M5.4 | 69 km | 568 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
18 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Kalmaegi | Category 2 | — | 163 km |
| 2021 | Rai | Category 4 | 121 mph | 107 km |
| 2019 | Phanfone | Category 3 | 92 mph | 279 km |
| 2013 | Haiyan | Category 5 | 127 mph | 228 km |
| 2012 | Bopha | Category 4 | 98 mph | 28 km |
| 2008 | Fengshen | Category 3 | 92 mph | 282 km |
| 2006 | Utor | Category 1 | 75 mph | 282 km |
| 2005 | Roke | Category 1 | 52 mph | 196 km |
| 1995 | Zack | Category 2 | 63 mph | 183 km |
| 1994 | Axel | Category 2 | 92 mph | 248 km |
| 1994 | Owen | Category 1 | 69 mph | 145 km |
| 1993 | Nell | Category 1 | 69 mph | 155 km |
| 1990 | Mike | Category 4 | 98 mph | 159 km |
| 1988 | Skip | Category 4 | 81 mph | 283 km |
| 1986 | Marge | Category 1 | 69 mph | 156 km |
| 1984 | Agnes | Category 4 | 121 mph | 262 km |
| 1984 | Ike | Category 4 | 104 mph | 105 km |
| 1982 | Nelson | Category 3 | 104 mph | 170 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2012 | TANON STRAIT | Earthquake | 5.0 m | 51 | 98 km |
| 1990 | PHILIPPINES | Earthquake | 2.1 m | 6 | 147 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Cuernos de Negros (37 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Cuernos de Negros | Complex | 1,862 m (6,109 ft) | Unknown | 37 km |
| Camiguin | Stratovolcano(es) | 1,552 m (5,092 ft) | 1953 | 130 km |
| Kanlaon | Stratovolcano | 2,435 m (7,989 ft) | 2017 | 145 km |
| Mandalagan | Complex | 1,885 m (6,184 ft) | Unknown | 168 km |
| Silay | Stratovolcano | 1,510 m (4,954 ft) | Unknown | 181 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 4.2 in | |
| February | 78°F (26°C) | 2.5 in | Coldest |
| March | 80°F (27°C) | 2.5 in | |
| April | 82°F (28°C) | 2.3 in | Driest |
| May | 82°F (28°C) | 4.5 in | Warmest |
| June | 81°F (27°C) | 6.4 in | |
| July | 81°F (27°C) | 6.6 in | |
| August | 81°F (27°C) | 5.8 in | |
| September | 80°F (27°C) | 6.7 in | |
| October | 80°F (27°C) | 9.0 in | Wettest |
| November | 80°F (27°C) | 8.1 in | |
| December | 79°F (26°C) | 5.8 in |
San Juan has a seasonal temperature swing of 4°F / from 78°F in February to 82°F in May. Total annual precipitation is 64.4 inches, with October being the wettest month (9.0") and April the driest (2.3").