
South Lewis, Harris and North Uist National Scenic Area
- Annual mean
- 9.6 °C
- Warmest month
- August
- Wettest month
- January
Annual averages for temperature, precipitation, humidity, wind speed, and daylight hours
The climate profile for Monach Islands features twelve-month normals derived from a representative coordinate at 6.15 meters elevation. These figures encompass mean, minimum, and maximum temperatures along with average daily precipitation, relative humidity, and wind speed patterns recorded between 1991 and 2020. Data provided includes daylight duration to reflect changing solar cycles throughout the calendar year, offering a precise look at atmospheric conditions at this specific location.

Long term monthly averages tracking twelve month thermal ranges and daily precipitation rates
Track average temperature bounds, daily precipitation rates, wind speeds, and calculated daylight hours through the year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 7.3 °C3.6° to 10.7° | 4.9 mm/day | 81.6% | 10.7 m/s | 7.1 hours |
| February | 6.9 °C3° to 9.9° | 4.2 mm/day | 81.3% | 10.3 m/s | 9.1 hours |
| March | 7.1 °C3.6° to 9.7° | 3.5 mm/day | 82.3% | 9.2 m/s | 11.5 hours |
| April | 8.1 °C4.6° to 11° | 2.6 mm/day | 83.3% | 7.8 m/s | 14 hours |
| May | 9.7 °C6.3° to 14.1° | 2.3 mm/day | 83.9% | 6.9 m/s | 16.3 hours |
| June | 11.7 °C8.8° to 15.1° | 2.7 mm/day | 86% | 6.6 m/s | 17.6 hours |
| July | 13.3 °C10.8° to 16.4° | 3.2 mm/day | 87.4% | 6.3 m/s | 17 hours |
| August | 13.8 °C11.3° to 16.5° | 3.5 mm/day | 86.3% | 6.8 m/s | 14.9 hours |
| September | 13 °C10° to 15.6° | 3.6 mm/day | 85% | 7.9 m/s | 12.4 hours |
| October | 11.2 °C7.7° to 14° | 4.5 mm/day | 82.9% | 9.1 m/s | 9.9 hours |
| November | 9.3 °C5.7° to 12.5° | 4.6 mm/day | 81.6% | 9.9 m/s | 7.6 hours |
| December | 8 °C4.2° to 11.5° | 4.8 mm/day | 81.1% | 10.1 m/s | 6.4 hours |
Calculated monthly contrasts across long term temperature, precipitation, wind, and daylight normals
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.
Examine monthly temperature, precipitation, and wind patterns across different geographic settings





Investigate the unique ecological and geomorphological character of the Monach Islands through MoriAtlas. Examine how tidal flats, machair ecosystems, and marine protection zones interact within the broader Outer Hebrides landscape for a deeper understanding of this isolated archipelago.