
Kosterhavet National Park
- Annual mean
- 7.1 °C
- Warmest month
- July
- Wettest month
- October
Twelve-month climatological profiles based on representative point measurements for Swedish protected landscapes.
Review established monthly climate normals for Tresticklan National Park derived from NASA POWER data covering the 1991 to 2020 period. This dataset provides standardized atmospheric insights at a representative coordinate, tracking fluctuations in mean temperatures, daily precipitation rates, relative humidity, wind speed, and daylight duration throughout the year to define the local climatological rhythm.

Tracking the relationship between thermal ranges and average daily precipitation across the calendar
Compare long-term temperature bounds, average daily precipitation, and calculated daylight hours.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -2.8 °C-14.2° to 5° | 2.4 mm/day | 96.4% | 2.9 m/s | 6.7 hours |
| February | -2.6 °C-13.4° to 4.5° | 2.1 mm/day | 95.1% | 2.8 m/s | 8.9 hours |
| March | 0.6 °C-8.8° to 9.6° | 1.7 mm/day | 88.8% | 2.8 m/s | 11.5 hours |
| April | 5.5 °C-2.9° to 16.4° | 2 mm/day | 82.4% | 2.7 m/s | 14.2 hours |
| May | 10.6 °C1.4° to 21.7° | 2.3 mm/day | 78.7% | 2.6 m/s | 16.6 hours |
| June | 14.4 °C6.8° to 23.7° | 3.1 mm/day | 78.5% | 2.6 m/s | 18 hours |
| July | 16.8 °C9.6° to 25.9° | 3 mm/day | 80.3% | 2.5 m/s | 17.4 hours |
| August | 16 °C8.7° to 24.9° | 3.3 mm/day | 83.3% | 2.5 m/s | 15.1 hours |
| September | 11.9 °C4° to 19.7° | 3 mm/day | 86.5% | 2.9 m/s | 12.5 hours |
| October | 6.6 °C-1.6° to 14.4° | 3.3 mm/day | 91.8% | 2.8 m/s | 9.7 hours |
| November | 2 °C-7.2° to 9.2° | 3.1 mm/day | 95.6% | 2.8 m/s | 7.3 hours |
| December | -1.5 °C-11.7° to 6.1° | 2.5 mm/day | 96.8% | 2.8 m/s | 6 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 monthly averages for temperature, precipitation, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Contrast historical temperature, daylight, and precipitation patterns across regional landscapes








Delve deeper into the structured geographic context and mapped natural landscapes of Tresticklan National Park. Understanding this protected area's place within Västra Götaland County enriches your view of Scandinavian wilderness. MoriAtlas invites you to trace the park's boundaries and appreciate its rare old-growth forest ecosystem from a detailed atlas perspective.