
Helvetinjärvi National Park
- Annual mean
- 3.5 °C
- Warmest month
- July
- Wettest month
- July
Monthly averages for temperature, precipitation, humidity, wind, and daylight duration
Understand the long-term annual climate pattern of Seitseminen National Park through monthly averages based on 1991 to 2020 NASA POWER data. These measurements provide a consistent profile for a representative coordinate at 143.2 meters elevation. Readers can analyze temperature variations, precipitation rates, and daylight hours to observe atmospheric shifts throughout the calendar year.

Comparing long term monthly thermal ranges and daily precipitation rates throughout the year
Compare monthly temperature bounds, daily precipitation rates, and calculated daylight across the year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -7.5 °C-22.8° to 0.9° | 1.8 mm/day | 98.8% | 2.6 m/s | 5.9 hours |
| February | -7.8 °C-23° to 0.8° | 1.6 mm/day | 98.9% | 2.5 m/s | 8.5 hours |
| March | -3.7 °C-16.2° to 5.3° | 1.5 mm/day | 95.7% | 2.6 m/s | 11.4 hours |
| April | 2.6 °C-6.9° to 15.1° | 1.7 mm/day | 84.7% | 2.5 m/s | 14.5 hours |
| May | 8.8 °C-2.6° to 21.9° | 2 mm/day | 77.8% | 2.3 m/s | 17.3 hours |
| June | 13.5 °C3.1° to 24.4° | 2.9 mm/day | 78.2% | 2.2 m/s | 19.1 hours |
| July | 16.4 °C7.2° to 26.4° | 3.1 mm/day | 81.2% | 2.1 m/s | 18.2 hours |
| August | 14.8 °C5.7° to 25° | 2.7 mm/day | 84.8% | 2.1 m/s | 15.5 hours |
| September | 9.8 °C0.8° to 19.2° | 2.4 mm/day | 88.9% | 2.2 m/s | 12.5 hours |
| October | 3.6 °C-5.7° to 12.4° | 2.7 mm/day | 94.2% | 2.3 m/s | 9.4 hours |
| November | -1.4 °C-12.2° to 6.1° | 2.3 mm/day | 97.3% | 2.4 m/s | 6.6 hours |
| December | -5.1 °C-17.6° to 2.3° | 2.1 mm/day | 98.5% | 2.6 m/s | 4.9 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparing long-term averages for the warmest, coolest, wettest, and driest months across the year
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Track monthly temperature, precipitation, and daylight patterns across distinct regional climates





Deepen your understanding of Seitseminen National Park by exploring its precise mapped boundaries and detailed geographic context within Finland. MoriAtlas provides structured data to navigate its characteristic boreal terrain, ancient forests, and extensive wetland ecosystems, enabling a richer appreciation of this protected wilderness area's place in the regional landscape.