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Weather & Climate in Mäntyharju, Finland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mäntyharju has a cool climate with an average annual temperature of 39°F (4°C). Winters average 18°F in January while summers reach 62°F in July. The area gets 293 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 23.5 inches (drier than the 38-inch national average). The area receives 8.0 inches of snow annually. The city sits at an elevation of 282 feet.
Temperature
18°F Jan (-8°C)
62°F Jul (17°C)
| Annual Average | 38.5°F |
| 29% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 282 ft (86 m) |
| Area | 869.2 sq mi (2,251.3 km²) |
| Population Density | 8/sq mi |
| Coordinates | 61.4167°N, 26.8833°W |
| Timezone | Europe/Helsinki |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.6.
| Mar 19, 2011 | Finland | M2.6 | 127 km | 3 km |
| Jul 2, 2008 | 9 km NW of Joutseno, Finland | M2.5 | 85 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 1.5 in | |
| February | 17°F (-8°C) | 1.1 in | Coldest, Driest |
| March | 27°F (-3°C) | 1.3 in | |
| April | 36°F (2°C) | 1.3 in | |
| May | 49°F (10°C) | 1.3 in | |
| June | 58°F (15°C) | 2.2 in | |
| July | 62°F (17°C) | 2.9 in | Warmest |
| August | 58°F (14°C) | 3.0 in | Wettest |
| September | 48°F (9°C) | 2.4 in | |
| October | 39°F (4°C) | 2.4 in | |
| November | 29°F (-2°C) | 2.1 in | |
| December | 22°F (-6°C) | 1.9 in |
Mäntyharju has a seasonal temperature swing of 44°F / from 17°F in February to 62°F in July. Total annual precipitation is 23.5 inches, with August being the wettest month (3.0") and February the driest (1.1").