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San Francisco del Mar Viejo, Mexico
Oaxaca · Mexico
San Francisco del Mar Viejo is a small town in Oaxaca, Mexico with a population of 4,033. Elevation: 26 ft (8 m). Average temperature: 82°F (28°C).
Data updated June 2026
Discover San Francisco del Mar Viejo, Mexico
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People
Economy
Climate
| Population | 4,033 |
| Population Density | 5 / sq mi |
| Elevation | 26 ft (8 m) |
| Coordinates | 16.2319°, -94.6330° |
| Timezone | America/Mexico_City |
| Country | 🇲🇽 Mexico |
| State / Province | Oaxaca |
| Average Temperature | 82°F (28°C) |
| January Average | 77°F (25°C) |
| July Average | 83°F (29°C) |
| Annual Precipitation | 41.0 inches (1,042 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
About San Francisco del Mar Viejo
San Francisco del Mar Viejo is a small town in Mexico (Oaxaca) with a population of 4,033. The city sits at an elevation of 26 feet (8 meters) above sea level. The average annual temperature is 82°F (28°C). Temperatures range from 77°F in January to 83°F in July. Annual precipitation averages 41.0 inches. The timezone is America/Mexico_City.
Income: San Francisco del Mar Viejo vs Mexico
Commute Mode
Income
Employment & Poverty
| Unemployment | 1.1% |
| 69% below Mexico avg | |
| Establishments (County) | 129 |
Business (County)
Tax & Cost of Living
Commute & Transportation
Walkability
Temperature
| Annual Average | 81.5°F |
| 51% above Mexico avg | |
| January Average | 77°F (25°C) |
| July Average | 83°F (29°C) |
| Sunny Days | 262 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 904.1 sq mi (2,341.6 km²) |
| Population Density | 5/sq mi |
| Coordinates | 16.2319°N, 94.6330°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 0.4 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1965 | MEXICO | Earthquake | 0.4 m | 6 | 125 km |
| 2022 | S. MEXICO | Earthquake | 0.2 m | — | 142 km |
| 2025 | OFF COAST OF OAXACA | Earthquake | 0.2 m | — | 67 km |
Nearby Volcanoes
1 volcano within 200 km. Closest: Chichon, El (195 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chichon, El | Lava dome(s) | 1,150 m (3,773 ft) | 1982 | 195 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 0.0 in | Coldest, Driest |
| February | 79°F (26°C) | 0.2 in | |
| March | 81°F (27°C) | 0.1 in | |
| April | 84°F (29°C) | 0.4 in | |
| May | 85°F (30°C) | 3.9 in | Warmest |
| June | 83°F (29°C) | 8.3 in | |
| July | 83°F (29°C) | 5.7 in | |
| August | 83°F (28°C) | 9.7 in | |
| September | 82°F (28°C) | 10.2 in | Wettest |
| October | 81°F (27°C) | 2.3 in | |
| November | 80°F (27°C) | 0.4 in | |
| December | 78°F (26°C) | 0.0 in |
San Francisco del Mar Viejo has a seasonal temperature swing of 8°F / from 77°F in January to 85°F in May. Total annual precipitation is 41.0 inches, with September being the wettest month (10.2") and January the driest (0.0").
Airports Near San Francisco del Mar Viejo
4 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| General Antonio Cárdenas Rodríguez National Airport / Ixtepec Air Base | IZT | Medium Airport |
| C.P.A. Leonardo López Hernandez Airport | — | Small Airport |
| Estación Aeronaval de Salina Cruz | SCX | Small Airport |
| Llano Grande Airport | — | Small Airport |
Quick Facts
🇲🇽 About Mexico
Public Holidays in Mexico
9 public holidays this year
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Get ReportFrequently Asked Questions About San Francisco del Mar Viejo
What is the population of San Francisco del Mar Viejo?
San Francisco del Mar Viejo has a population of 4,033 residents and is located in Mexico. The population density is 5 people per square mile, spread across 904.1 square miles.
What is the weather like in San Francisco del Mar Viejo?
San Francisco del Mar Viejo has a warm climate with an average annual temperature of 82°F (28°C). Winter temperatures average 77°F in January, while summers reach an average of 83°F in July. The area receives 262 sunny days per year, well above the national average of 205. Annual rainfall totals 41.0 inches.
How is the job market in San Francisco del Mar Viejo?
The job market in San Francisco del Mar Viejo is very strong, with unemployment at just 1.1% / well below the national rate of 3.6%. There are 129 business establishments in the area.