Best time to visit Iceland

Month	Temp	Daylight	Crowds	Note
January	-1/+3°C	5 h	2/5	Northern Lights peak season. Ice caves open. Dark but magical.
February	-2/+2°C	8 h	2/5	Northern Lights still excellent. Snow landscapes. Ice cave tours.
March	0/+4°C	12 h	3/5	Last good aurora month. Days lengthen fast. Snow slowly receding.
April	+3/+8°C	15 h	3/5	Final aurora chance. Puffins arrive late April. Shoulder prices.
May	+6/+11°C	18 h	4/5	Midnight sun begins late May. Fjords green, waterfalls full. Sweet spot.
June	+9/+13°C	24 h	5/5	True midnight sun (24 h daylight). Warmest month. Peak prices.
July	+10/+14°C	22 h	5/5	Peak season, highest prices. Puffin colonies full. Excellent hiking.
August	+10/+14°C	18 h	5/5	Still warm and busy. Last midnight sun. Puffins depart late Aug.
September	+7/+11°C	13 h	3/5	Northern Lights return. Quieter, cheaper. Autumn colors stunning.
October	+3/+7°C	10 h	2/5	Good aurora odds. Fewer crowds, lower prices. Unpredictable weather.
November	0/+4°C	6 h	1/5	Low season. Strong aurora potential. Cold and very dark.
December	-1/+3°C	4 h	2/5	Darkest month — only 4 h daylight. Best aurora odds. Festive Reykjavik.