The largest area of Nordland, including fjord areas, inland areas and highlands below the treeline, are dominated by the boreal climate (Dfc), but an atypical oceanic variant with relatively mild winters, lack of permafrost, and often with autumn as wettest season. Towns with this climate include Mosjøen, Mo i Rana, Rognan, Fauske and Narvik. Along the coast and on islands (including Vega) along the southern and middle part of Nordland is a warmer, temperate oceanic climate (Cfb) with winter mean temperature above 0°C and a four month long summer. This includes Brønnøysund, Sandnessjøen and some islands north to Skrova. Just inland of this is a narrow area with coldest winter month mean temperature just below 0°C but still a four month long summer, this area has a humid continental climate (Dfb), and includes the county seat Bodø.