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Köln vs Reykjavík

Cfb Oceanic / temperateCfc Subpolar oceanic

Comparing Köln change · Reykjavík change

Bottom line

Köln is the warmer of the two — about 11°F on the annual average; Reykjavík is the wetter, with 21 in more rain a year, and Köln the sunnier.

Warmer Köln 11°F on the year
Wetter Reykjavík 21 in more a year
Sunnier Köln 8 pp less cloud
Colder winters Reykjavík 4°F colder nights

How the seasons compare

The differences between Köln and Reykjavík, in everyday terms.

Summers

Köln has far hotter summers

Köln: Mild
Reykjavík: Cool

Winters

Köln has milder winters

Köln: Chilly
Reykjavík: Cold

Rain & snow

Reykjavík is wetter

Köln: Moderate rainfall
Reykjavík: Wet

Sky

Köln is sunnier

Köln: Often grey
Reykjavík: Often grey

Month-by-month charts

Temperature

Köln is the warmer of the two — about 11°F on the annual average.

20°40°60°80° JanAprJulOct KölnReykjavík

Precipitation

Reykjavík is the wetter — about 21 in more across the year.

PRECIPITATION (in) 036 JanAprJulOct KölnReykjavík

Clear skies

Köln has the clearer skies — the higher line.

0%25%50%75%100% JanAprJulOct KölnReykjavík

Exact monthly numbers

Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.

Avg high (°F) Köln runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Köln434553616773777669595044
Reykjavík383738444954575652454038
Difference-5-8-14-17-19-19-20-20-17-14-9-5
Jan – JunJanFebMarAprMayJun
Köln434553616773
Reykjavík383738444954
Difference-5-8-14-17-19-19
Jul – DecJulAugSepOctNovDec
Köln777669595044
Reykjavík575652454038
Difference-20-20-17-14-9-5
Avg low (°F) Köln runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Köln323236404652565550443834
Reykjavík292829343944474743373231
Difference-3-4-7-6-7-8-9-8-6-7-6-3
Jan – JunJanFebMarAprMayJun
Köln323236404652
Reykjavík292829343944
Difference-3-4-7-6-7-8
Jul – DecJulAugSepOctNovDec
Köln565550443834
Reykjavík474743373231
Difference-9-8-6-7-6-3
Precipitation (in) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Köln2.42.12.21.92.43.43.43.32.62.52.52.7
Reykjavík5.254.333.723.85.354.55.94.9
Difference+2.8+2.9+2.1+1.1+1.2-1.4+0.3+2+2.4+2+3.4+2.1
Jan – JunJanFebMarAprMayJun
Köln2.42.12.21.92.43.4
Reykjavík5.254.333.72
Difference+2.8+2.9+2.1+1.1+1.2-1.4
Jul – DecJulAugSepOctNovDec
Köln3.43.32.62.52.52.7
Reykjavík3.85.354.55.94.9
Difference+0.3+2+2.4+2+3.4+2.1
Snowfall (in)
JanFebMarAprMayJunJulAugSepOctNovDec
Köln
Reykjavík10.815.811.44.60.400000.48.211.9
Difference
Jan – JunJanFebMarAprMayJun
Köln
Reykjavík10.815.811.44.60.40
Difference
Jul – DecJulAugSepOctNovDec
Köln
Reykjavík0000.48.211.9
Difference
Cloud cover (%) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Köln757473707272706867727877
Reykjavík858282797679817979788284
Difference+10+8+9+9+4+7+12+12+12+5+4+7
Jan – JunJanFebMarAprMayJun
Köln757473707272
Reykjavík858282797679
Difference+10+8+9+9+4+7
Jul – DecJulAugSepOctNovDec
Köln706867727877
Reykjavík817979788284
Difference+12+12+12+5+4+7
Relative humidity (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Köln928984797774706975849193
Reykjavík888786848383858686888888
Difference-5-2+2+6+6+9+15+16+11+4-4-6
Jan – JunJanFebMarAprMayJun
Köln928984797774
Reykjavík888786848383
Difference-5-2+2+6+6+9
Jul – DecJulAugSepOctNovDec
Köln706975849193
Reykjavík858686888888
Difference+15+16+11+4-4-6

How both climates are changing

Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Köln trends → · Reykjavík trends →

Reykjavík from Cfc to Cfb.

Methodology & sources

Köln

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Koln-bonn, a weather station, about 16 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

Reykjavík

Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Keflavik, a weather station, about 39 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →