Dover: Annual Weather Averages. August is the hottest month in Dover with an average temperature of 17Â°C (62Â°F) and the coldest is February at 4Â°C (38Â°F) with the most daily sunshine hours at 8 in August. Average Temperature: Dover. Loading weather data.
Satellite Island, wilderness surrounds. In the heart of the magnificent D'Entrecasteaux Channel, in the south of Tasmania, lies a small island of immense beauty.
Helenite is an exquisite and vibrant man-made gemstone crafted from volcanic ash from the famous 1980 eruption of Mount St. Helens in Washington State. 1  Known for stunning and intense colors, Helenite can be found in shades of deep blue and burgundy. However, the dark green variety is the most prevalent and highly prized. Helenite is created by crushing volcanic ash and rock and fusing it at temperatures as high as 2,700 degrees Fahrenheit. Its stunning colors have made Helenite an attractive alternative to rare emerald, ruby or garnet gemstones. Helenite is named for Mount St. Helens, the Washington volcano famously known for its violent eruption on May 18, 1980.