Hypothyroidism caused by Hashimoto's thyroiditis is treated with thyroid hormone replacement agents such as levothyroxine, triiodothyronine or desiccated thyroid extract. A tablet taken once a day generally keeps the thyroid hormone levels normal.
September deserves to be a more popular time to visit Iceland. Though youâll miss out on seeing the sun high in the sky well past 10pm (sunset is around 7:30pm and the sun rises around 6:30am), temperatures are still quite nice, with average temps between 10.1Â°C (50 Â°F) and 5Â°C (41 Â°F) throughout the month, and prices are lower and crowds are fewer.
The Icelandic winter is relatively mild for its latitude. The southerly lowlands of the island average around 0 Â°C (32 Â°F) in winter, while the Highlands of Iceland tend to average around â10 Â°C (14 Â°F). The lowest temperatures in the northern part of the island range from around â25 to â30 Â°C (â13 to â22 Â°F). The lowest temperature on record is â39.7 Â°C (â39.5 Â°F). Summers. The average July temperature in the southern part of the island is 10â13 Â°C (50â55 Â°F). Warm summer days can reach 20â25 Â°C (68â77 Â°F). The highest temperature recorded was 30.5 Â°C (86.9 Â°F) at the Eastern fjords in 1939. Annual average sunshine hours in ReykjavÃ­k are around 1300, which is similar to towns in Scotland and Ireland.