
Monach Islands
- Annual mean
- 9.9 °C
- Warmest month
- August
- Wettest month
- January
Detailed atmospheric records including temperature, precipitation, wind, and daylight trends.
Access twelve-month climate averages for a representative location within South Lewis, Harris and North Uist National Scenic Area. Data tracks temperature variations, daily precipitation rates, relative humidity, wind speed, and daylight duration based on the 1991 to 2020 period. These records provide a consistent look at typical environmental conditions across the calendar year for comparative analysis.

Long term monthly temperature ranges and average daily precipitation rates across twelve months
Twelve-Month Comparison of Temperature Bounds, Precipitation Rates, Humidity, Wind, and Daylight
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 6.6 °C2.7° to 10.4° | 5.3 mm/day | 83.3% | 10.1 m/s | 7.1 hours |
| February | 6.2 °C2° to 9.6° | 4.6 mm/day | 83% | 9.7 m/s | 9.1 hours |
| March | 6.6 °C2.6° to 9.8° | 4 mm/day | 83.6% | 8.7 m/s | 11.5 hours |
| April | 7.8 °C3.7° to 11.8° | 2.9 mm/day | 83.6% | 7.4 m/s | 14.1 hours |
| May | 9.7 °C5.6° to 15.8° | 2.7 mm/day | 83.2% | 6.5 m/s | 16.4 hours |
| June | 11.8 °C8.3° to 16.7° | 3.1 mm/day | 84.9% | 6.2 m/s | 17.6 hours |
| July | 13.4 °C10.4° to 18° | 3.5 mm/day | 86.4% | 6 m/s | 17 hours |
| August | 13.8 °C10.8° to 17.6° | 4 mm/day | 85.9% | 6.5 m/s | 14.9 hours |
| September | 12.8 °C9.2° to 16.3° | 4.1 mm/day | 85.1% | 7.5 m/s | 12.4 hours |
| October | 10.8 °C6.9° to 14.2° | 5.1 mm/day | 83.7% | 8.7 m/s | 9.9 hours |
| November | 8.8 °C4.7° to 12.5° | 5 mm/day | 83% | 9.3 m/s | 7.6 hours |
| December | 7.3 °C3.2° to 11.3° | 5.2 mm/day | 82.7% | 9.6 m/s | 6.4 hours |
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.
Explore long-term monthly climate normals across diverse protected landscapes and geographic settings.






Trace the mountainous terrain and intricate coastal boundaries of this significant Scottish scenic area. MoriAtlas provides a comprehensive view of the diverse habitats, from high-elevation montane heath to lowland machair and marine sea lochs, characteristic of the northern Outer Hebrides.