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Osiao, Philippines
Bicol Region · Philippines
Osiao is a small town in Bicol Region, Philippines with a population of 2,737. Elevation: 33 ft (10 m). Average temperature: 78°F (25°C).
Data updated June 2026
Discover Osiao, Philippines
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People
Climate
| Population | 2,737 |
| Population Density | 9 / sq mi |
| Elevation | 33 ft (10 m) |
| Coordinates | 13.0914°, 123.9811° |
| Timezone | Asia/Manila |
| Country | 🇵🇭 Philippines |
| State / Province | Bicol Region |
| Average Temperature | 78°F (25°C) |
| January Average | 75°F (24°C) |
| July Average | 79°F (26°C) |
| Annual Precipitation | 131.9 inches (3,349 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
About Osiao
Osiao is a small town in Philippines (Bicol Region) with a population of 2,737. The city sits at an elevation of 33 feet (10 meters) above sea level. The average annual temperature is 78°F (25°C). Temperatures range from 75°F in January to 79°F in July. Annual precipitation averages 131.9 inches. The timezone is Asia/Manila.
Climate in Osiao
Osiao has an average annual temperature of 27.6°C (82°F). The hottest month is May (28.9°C), the coldest is Jan (26°C). Average annual precipitation is 3629 mm.
Temperature
| Annual Average | 77.5°F |
| 44% above Philippines avg | |
| January Average | 75°F (24°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 124 days/yr |
Geography
| Elevation | 33 ft (10 m) |
| Area | 310.4 sq mi (803.8 km²) |
| Population Density | 9/sq mi |
| Coordinates | 13.0914°N, 123.9811°W |
| Timezone | Asia/Manila |
Precipitation & Snow
Air Quality
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 1.3 m (4 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1973 | QUEZON | Earthquake | 1.3 m | 15 | 132 km |
| 2003 | SAMAR SEA | Eruption + Earthquake | 1.0 m | - | 103 km |
| 1925 | PHILIPPINE SEA | Earthquake | - | - | 111 km |
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Pocdol Mountains (5 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Pocdol Mountains | Compound | 1,102 m (3,615 ft) | Unknown | 5 km |
| Bulusan | Stratovolcano(es) | 1,535 m (5,036 ft) | 2017 | 37 km |
| Isarog | Stratovolcano | 1,966 m (6,450 ft) | -3500 | 91 km |
| Biliran | Compound | 1,301 m (4,268 ft) | 1939 | 185 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 75°F (24°C) | 13.7 in | Coldest |
| February | 75°F (24°C) | 8.1 in | |
| March | 76°F (25°C) | 7.2 in | |
| April | 78°F (26°C) | 5.9 in | Driest |
| May | 80°F (26°C) | 6.9 in | Warmest |
| June | 80°F (26°C) | 8.7 in | |
| July | 79°F (26°C) | 10.0 in | |
| August | 79°F (26°C) | 8.9 in | |
| September | 79°F (26°C) | 10.2 in | |
| October | 78°F (26°C) | 14.5 in | |
| November | 77°F (25°C) | 18.0 in | |
| December | 76°F (24°C) | 19.7 in | Wettest |
Osiao has a seasonal temperature swing of 5°F / from 75°F in January to 80°F in May. Total annual precipitation is 131.9 inches, with December being the wettest month (19.7") and April the driest (5.9").
Schools in Osiao
4 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| Osiao Paglingap Elementary School | - | - | - | - |
| Osiao Paglingap National High School | - | - | - | - |
| Tiris Elementary School | - | - | - | - |
| Gajo Elementary School | - | - | - | - |
Radio Stations near Osiao
4 stations within ~55 km.
| Station | Genre | Quality | |
|---|---|---|---|
| Bespren Radio | pop | AAC+ 128 kbps | |
| Love Radio Legazpi | - | MP3 96 kbps | |
| OK-FM Sorsogon | - | MP3 73 kbps | |
| Radyo Natin Buhi | - | AAC 64 kbps |
Museums in Osiao
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Museo de Legazpi | ||||
| Sorsogon Museum |
Farmers Markets in Osiao
| Name | Address | Season | Hours | Organic | Website |
|---|---|---|---|---|---|
| Bacacay Public Market | |||||
| Casiguran Public Market | |||||
| Fruit Vendors | |||||
| Gubat Public Market | |||||
| Legazpi City Public Market | |||||
| Malilipot Public Market | |||||
| Poblacion Castilla Local Market | |||||
| Prieto Diaz Public Market | |||||
| Public Market | |||||
| Santo Domingo Public Market | |||||
| Sorsogon Public Market |
Airports Near Osiao
10 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Bicol International Airport | DRP | Large Airport |
| Catarman National Airport | CRM | Medium Airport |
| Moises R. Espinosa Airport | MBT | Medium Airport |
| Naga Airport | WNP | Medium Airport |
| Virac Airport | VRC | Medium Airport |
| Amoroy Airport | - | Small Airport |
| Bacon Community Airport | - | Small Airport |
| Bulan Airport | - | Small Airport |
| Calanay Airport | - | Small Airport |
| San Antonio Airport | - | Small Airport |
Quick Facts
🇵🇭 About Philippines
Volcanoes Near Osiao
Public Holidays in Philippines
18 public holidays this year
Frequently Asked Questions About Osiao
What is the population of Osiao?
Osiao has a population of 2,737 residents and is located in Philippines. The population density is 9 people per square mile, spread across 310.4 square miles.
What is the weather like in Osiao?
Osiao has a warm climate with an average annual temperature of 78°F (25°C). Winter temperatures average 75°F in January, while summers reach an average of 79°F in July. The area receives 124 sunny days per year, below the national average of 205. Annual rainfall totals 131.9 inches.