Herald Island (Arctic) - Climate

Climate

The climate is severe. For most of the year, the region is covered by masses of cold Arctic air with low moisture and dust content. In summer, warmer and moister Pacific air blows from the south-east. Dry and strongly warmed air masses periodically blow from Siberia.

The polar day lasts from the middle of May until the 20th of July. The polar night lasts from the middle of November through the end of January.

Winters are prolonged, and characterized by sustained freezing weather and strong northern winds. The mean temperature in January is −21.3 °C (−6.3 °F), and the coldest months are February and March. During this period the temperature can remain below −30 °C (−22 °F) over a period of weeks, with frequent snowstorms and wind speeds of 40 m/s (130 ft/s) or more. The summer is cool, with some frosts and snowfall. The mean temperature in July fluctuates from 2 to 2.5 °C (36 to 37 °F). The mean relative humidity is around 88%, and the yearly precipitation is around 120 mm (4.7 in).

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