Parc naturel de la Vallée de l'Attert
- Annual mean
- 8.4 °C
- Warmest month
- July
- Wettest month
- December
Long-term temperature, precipitation, and daylight patterns at a representative site.
Climate data for Parc naturel Haute-Sûre Forêt d'Anlier provides a consistent 1991 to 2020 reference for temperature, precipitation, humidity, wind, and daylight hours. These monthly averages reflect conditions at a single representative coordinate within the regional park. Precise measurement points offer a clear look at seasonal shifts in local climate patterns rather than daily weather or short-term forecasts.

Long-term monthly temperature ranges and average daily precipitation rates across twelve months
Complete monthly normals for temperature bounds, precipitation rates, humidity, and daylight
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 0.2 °C-9.3° to 8.6° | 2.8 mm/day | 95.3% | 5.5 m/s | 8.4 hours |
| February | 0.6 °C-8.4° to 9.7° | 2.5 mm/day | 93.6% | 5.2 m/s | 9.8 hours |
| March | 4 °C-5° to 15° | 2.3 mm/day | 88.5% | 4.9 m/s | 11.6 hours |
| April | 7.7 °C-2.8° to 19.7° | 1.8 mm/day | 82.7% | 4.3 m/s | 13.5 hours |
| May | 11.8 °C1° to 23.3° | 2.3 mm/day | 80.7% | 4.1 m/s | 15.2 hours |
| June | 15.1 °C4.9° to 26.6° | 2.5 mm/day | 79% | 3.9 m/s | 16 hours |
| July | 17.4 °C7.5° to 29.4° | 2.5 mm/day | 74.9% | 3.8 m/s | 15.6 hours |
| August | 17.2 °C7.3° to 29.7° | 2.5 mm/day | 73.8% | 3.7 m/s | 14.2 hours |
| September | 13.3 °C4° to 24.6° | 2.3 mm/day | 78.8% | 4.1 m/s | 12.3 hours |
| October | 8.8 °C-0.4° to 19.9° | 2.5 mm/day | 87.7% | 4.7 m/s | 10.4 hours |
| November | 4.2 °C-3.9° to 13.7° | 2.7 mm/day | 94.2% | 4.8 m/s | 8.8 hours |
| December | 1 °C-7.8° to 9.5° | 3.2 mm/day | 95.7% | 5.3 m/s | 8 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.
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore monthly temperature normals and precipitation rhythms across different geographic settings.






Examine the detailed geographic profile of this Walloon nature park. Through MoriAtlas, trace the forest cover and river basin boundaries that define the ecological character of this significant Ardennes protected area.