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Isojoki, Finland
South Ostrobothnia · Finland
Isojoki is a small town in South Ostrobothnia, Finland with a population of 1,771. Elevation: 374 ft (114 m). Average temperature: 39°F (4°C).
Data updated June 2026
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People
Climate
| Population | 1,771 |
| Population Density | 3 / sq mi |
| Elevation | 374 ft (114 m) |
| Coordinates | 62.1132°, 21.9588° |
| Timezone | Europe/Helsinki |
| Country | 🇫🇮 Finland |
| State / Province | South Ostrobothnia |
| Average Temperature | 39°F (4°C) |
| January Average | 22°F (-6°C) |
| July Average | 61°F (16°C) |
| Annual Precipitation | 25.9 inches (659 mm) |
| Annual Snowfall | 9.6 inches (24 cm) |
About Isojoki
Isojoki is a small town in Finland (South Ostrobothnia) with a population of 1,771. The city sits at an elevation of 374 feet (114 meters) above sea level. The average annual temperature is 39°F (4°C). Temperatures range from 22°F in January to 61°F in July. Annual precipitation averages 25.9 inches. The timezone is Europe/Helsinki.
Temperature
| Annual Average | 39.2°F |
| 27% below Finland avg | |
| January Average | 22°F (-6°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 289 days/yr |
Geography
| Elevation | 374 ft (114 m) |
| Area | 514.9 sq mi (1,333.5 km²) |
| Population Density | 3/sq mi |
| Coordinates | 62.1132°N, 21.9588°W |
| Timezone | Europe/Helsinki |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.9 in | |
| February | 20°F (-7°C) | 1.3 in | Coldest, Driest |
| March | 26°F (-3°C) | 1.5 in | |
| April | 37°F (3°C) | 1.4 in | |
| May | 47°F (8°C) | 1.3 in | |
| June | 56°F (14°C) | 2.2 in | |
| July | 61°F (16°C) | 2.9 in | Warmest |
| August | 58°F (14°C) | 3.0 in | Wettest |
| September | 49°F (9°C) | 2.8 in | |
| October | 40°F (4°C) | 2.6 in | |
| November | 31°F (-1°C) | 2.7 in | |
| December | 25°F (-4°C) | 2.3 in |
Isojoki has a seasonal temperature swing of 41°F / from 20°F in February to 61°F in July. Total annual precipitation is 25.9 inches, with August being the wettest month (3.0") and February the driest (1.3").
Schools in Isojoki
1 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| Isojoen Koulukolmio | - | - | - | - |
Museums in Isojoki
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Karijoen Kotiseutumuseo | ||||
| Siikaisten kotiseutumuseo |
Libraries in Isojoki
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| Library Isojoki | 0.0 |
Cafes in Isojoki
2 cafes within city radius - OpenStreetMap data
Bus Stations in Isojoki
1 bus stations within city radius - OpenStreetMap data
Gas Stations in Isojoki
2 gas stations within city radius - OpenStreetMap data
Ski Resorts Near Isojoki
2 ski resorts within range.
| Resort | Slopes (km) | Lifts | Peak (m) | Price | Season | Night | Park |
|---|---|---|---|---|---|---|---|
| Sotkan hiihto- ja ampumahiihtostadion | 0.0 | - | - | $0 | - | - | - |
| Sotkanrinteet | 0.0 | - | - | $0 | - | - | - |
Airports Near Isojoki
4 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Kauhajoki Airfield | KHJ | Medium Airport |
| Pori Airport | POR | Medium Airport |
| Ilvesjoki UL | - | Small Airport |
| Nummijärvi Airfield | - | Small Airport |
Churches & Religious Organizations in Isojoki
2 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Hurttankappeli | |
| Isojoen kirkko |
Quick Facts
🇫🇮 About Finland
Public Holidays in Finland
15 public holidays this year
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Get ReportFrequently Asked Questions About Isojoki
What is the population of Isojoki?
Isojoki has a population of 1,771 residents and is located in Finland. The population density is 3 people per square mile, spread across 514.9 square miles.
What is the weather like in Isojoki?
Isojoki has a cool climate with an average annual temperature of 39°F (4°C). Winter temperatures average 22°F in January, while summers reach an average of 61°F in July. The area receives 289 sunny days per year, well above the national average of 205. Annual rainfall totals 25.9 inches, with 9.6 inches of snow.