Sunshine & Daylight Hours in Shannon, Ireland
- Mean sunlight hours in Shannon range between 1h 23' for each day in December & 6h 36' daily in May.
- The longest day of the year is 16h 37' long and the shortest day is 7h 22' long.
- The longest day is 9h 15' longer than the shortest day.
- There is an average of 1386 hours of sunlight per year (of a possible 4383) with an average of 3:47 of sunlight per day.
- It is sunny 31.6% of daylight hours. The remaining 68.4% of daylight hours are likely cloudy or with shade, haze or low sun intensity.
- At midday the sun is on average 37.7° above the horizon at Shannon.
- The summer solstice is on June 21st (the northern solstice) when the sun reaches it's highest point 60.74° above the horizon.
- The winter solstice is on December 21st (the southern solstice) when the midday sun is at it's lowest point of 13.93° above the horizon.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Sunlight Hours/ Day | 1h 50' | 2h 35' | 3h 21' | 5h 08' | 6h 36' | 6h 02' | 4h 54' | 5h 05' | 3h 42' | 2h 46' | 2h 04' | 1h 23' | 3h 47' | ||
| Average Daylight Hours & Minutes/ Day | 8h 13' | 9h 47' | 11h 47' | 13h 55' | 15h 46' | 16h 46' | 16h 19' | 14h 41' | 12h 37' | 10h 30' | 8h 39' | 7h 42' | 12h 00' | ||
| Percentage of Sunny (Cloudy) Daylight Hours | 23 (77) | 27 (73) | 29 (71) | 38 (62) | 43 (57) | 37 (63) | 30 (70) | 35 (65) | 30 (70) | 27 (73) | 25 (75) | 19 (81) | 32 (68) | ||
| Sun altitude at solar noon on the 21st day (°). | 17.5 | 26.8 | 37.6 | 49.2 | 57.5 | 60.7 | 57.7 | 49.3 | 37.9 | 26.5 | 17.3 | 13.9 | 37.7 |