Typically the average temperate in Reykjavik during the time of March is 1 with a high of 2 degrees with a low of -2. We have provided a clearer breakdown here:

MonthDegrees Celsius
Temperature1
High Temperature2
Low Temperature-2
Sunshine Per Day5

Reykjavik, Iceland Weather in March FAQs

Typically what weather am I expecting?

The usual weather is 1 celsius although it does change during the day

Click to see more Reykjavik Weather including Reykjavik, Iceland February Weather and Reykjavik, Iceland April Weather