If you’re coming earlier in the season, expect temps on the colder, wetter end, while if you visit closer to summer you’ll find warmer, drier days. The best way to be prepared for anything is…well, to be prepared for anything. Bring layers so you can dress according to the weather on a given day.
For outdoor activities, you’ll need thermal long-underwear (a shirt and pants), a layer of fleece on top, and then waterproof pants and jacket. Earlier in the season, you’ll need a scarf, hat and gloves (which are also worth bringing closer to summer if you come from a warmer climate), and several wool sweaters.
Sturdy, waterproof boots will prove invaluable, as will a bathing suit (which may surprise you) as public pools in Iceland are heated and open all year round.
March is one of the rainiest months of the year in Iceland, and if you visit in spring you’re sure to experiences at least a few showers.
Iceland24, April 2015