We should first of all observe that cyclamen do not respond to day-length as such: the formation of the flower buds is not influenced by changes in the hours of daylight. Quick Green Energy Summary for Oregon Sunlight State Sunlight Rank: 41/50 Average Annual Sunlight Hours: 2300 hours Clear Days: 68 days per year Summer Peak Sun Hours: 5.71 hours per day Winter Peak Sun Hours: 1.9 hours per day Average Peak Sun Hours : 4.03 hours per day If you want year-round autonomy, use the lowest figure. Kathy, Those numbers listed correspond exactly to the solar sunlight hours as an average based on many years of data collection. Total Hours is the average number of sunny hours a place normally has in a year. The increase in the overall quantity of light, however (length of day and light intensity) does encourage bud stalks to … Sunlight hours in Yaounde range from 2:48 per day in July to 5:54 daily in December; The longest day of the year is 12:13 long and the shortest day is 11:46 long. To find the average sun hours per day in your area look at the maps at the bottom of this page, or find a city in the table below that has similar weather to your location. Sun Hours / Day - … This country is pleasant in the cool and dry period between November and February. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. With longer days in summer the sun naturally rises earlier and sets later, and vice versa in winter. Daylight hours: sunrise and sunset times. While many areas of the U.S. will have practically the same total daylight, some states may only average two peak sun-hours per day while others will average as many as seven. Clear Days is the average number of days annually when cloud covers at most 30 percent of the sky during daylight hours. If you want only 100% autonomy in summer, use the highest figure. Do Plants Really Need 6 Hours of Sun Per Day?. The "Harmattan"-period is best to be avoided, the winds blows sands from the Sahara from December till February. Since the peak solar radiation is 1 kW/m 2, the number of peak sun hours is numerically identical to the average daily solar insolation. In nature, each plant species has adapted to a certain range of light intensities at which photosynthesis takes place most efficiently. Although the sun shines and gives light many more hours per day, those numbers represent the average amount of sunlight hours anybody can use to calculate how many kwh’s of electricity a solar panel will produce. Climate and Average Weather in Cameroon. So I set myself a bedtime alarm for visible sunrise minus 9 hours to ensure I am getting a solid 8 hours of sleep each night. There is an average of 1663 hours of sunlight per year (of a possible 4383) with an average of 4:33 of sunlight per day. 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