Lough SillanWhen to Go
Best Time to Visit Lough Sillan
Best visited in summer for outdoor activities and events.
Summer
June-August · 13-20°C
Warmest and best for waterside activities; local amenities operate fully.
Spring/Autumn
April-May, September-October · 8-15°C
Quieter and pleasant for walking; migratory birds move through.
Weather & Climate near Lough Sillan
Climate
Lough Sillan's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in July) and cold winters (coldest in January). Temperatures range from 2°C to 19°C. Abundant rainfall (1141 mm/year), wettest in November.
Air Quality:
AQI 31
Good
Best Time to Visit
JuneJulySeptember
Temperature & Rainfall
Temperature Range
26°
Warmest Month
-6°
Coldest Month
Monthly Conditions
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | 2° - 7° | 1° | 117 mm | overcast | 95% | 4.0 m/s | 0.0 low | 7.7h |
| February | Poor | 2° - 8° | 2° | 95 mm | overcast | 94% | 3.9 m/s | 0.1 low | 9.5h |
| March | Acceptable | 3° - 10° | 3° | 96 mm | overcast | 91% | 4.1 m/s | 0.3 low | 11.7h |
| April | Acceptable | 4° - 12° | 6° | 67 mm | overcast | 87% | 3.5 m/s | 0.7 moderate | 13.9h |
| May | Acceptable | 6° - 15° | 10° | 71 mm | overcast | 85% | 3.3 m/s | 1.0 moderate | 15.8h |
| June | Good | 9° - 17° | 13° | 74 mm | overcast | 84% | 3.1 m/s | 1.2 high | 16.9h |
| July | Good | 11° - 19° | 15° | 74 mm | overcast | 85% | 3.0 m/s | 1.1 high | 16.4h |
| August | Acceptable | 11° - 19° | 15° | 97 mm | overcast | 87% | 2.9 m/s | 0.9 moderate | 14.7h |
| September | Good | 9° - 16° | 13° | 98 mm | overcast | 89% | 3.1 m/s | 0.5 moderate | 12.5h |
| October | Acceptable | 7° - 13° | 8° | 116 mm | overcast | 92% | 3.4 m/s | 0.2 low | 10.3h |
| November | Acceptable | 4° - 10° | 4° | 118 mm | overcast | 95% | 3.5 m/s | 0.1 low | 8.3h |
| December | Poor | 3° - 8° | 2° | 118 mm | overcast | 96% | 3.6 m/s | 0.0 low | 7.1h |
Getting There & Around
How to Get to Lough Sillan
Lough Sillan is reached from Cavan town and surrounding villages by local roads. Public transport options are limited; driving or arranging local taxi/transfer is usually simplest.
Tips for Visiting Lough Sillan
- The lakeside town host occasional local regattas and rowing events - check community calendars if interested.
- Walk the perimeter paths to discover memorials and local plaques often missed by casual visitors.