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Tallinn vs Reykjavík

Cfb Oceanic / temperateCfc Subpolar oceanic

Comparing Tallinn change · Reykjavík change

Bottom line

Tallinn is the warmer of the two — about 3°C on the annual average; Reykjavík is the wetter, with 595 mm more rain a year, and Tallinn the sunnier.

Warmer Tallinn 3°C on the year
Wetter Reykjavík 595 mm more a year
Sunnier Tallinn 11 pp less cloud
Winter nights About the same winter lows close to each other

How the seasons compare

The differences between Tallinn and Reykjavík, in everyday terms.

Summers

Tallinn has far hotter summers

Tallinn: Mild
Reykjavík: Cool

Winters

Winters are similar

Tallinn: Cold
Reykjavík: Cold

Rain & snow

Reykjavík is wetter

Tallinn: Moderate rainfall
Reykjavík: Wet

Sky

Tallinn is sunnier

Tallinn: Often cloudy
Reykjavík: Often grey

Month-by-month charts

Temperature

Tallinn is the warmer of the two — about 3°C on the annual average.

-20°-10°10°20°30° JanAprJulOct TallinnReykjavík

Precipitation

Reykjavík is the wetter — about 595 mm more across the year.

PRECIPITATION (mm) 075150 JanAprJulOct TallinnReykjavík

Clear skies

Tallinn has the clearer skies — the higher line.

0%25%50%75%100% JanAprJulOct TallinnReykjavík

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 (°C) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn1-13915202321171152
Reykjavík3346912141311754
Difference+2+4-3-6-8-9-8-6-4-1+1
Jan – JunJanFebMarAprMayJun
Tallinn1-1391520
Reykjavík3346912
Difference+2+4-3-6-8
Jul – DecJulAugSepOctNovDec
Tallinn2321171152
Reykjavík141311754
Difference-9-8-6-4-1+1
Avg low (°C) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn-5-3-0-09918181490-2
Reykjavík-1-2-214799630-1
Difference+3+1-1+1-5-3-9-9-8-6+2
Jan – JunJanFebMarAprMayJun
Tallinn-5-3-0-099
Reykjavík-1-2-2147
Difference+3+1-1+1-5-3
Jul – DecJulAugSepOctNovDec
Tallinn18181490-2
Reykjavík99630-1
Difference-9-9-8-6+2
Precipitation (mm) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn646635313663728666896761
Reykjavík13312710975935095135128114149123
Difference+69+61+74+44+56-13+23+49+61+26+82+63
Jan – JunJanFebMarAprMayJun
Tallinn646635313663
Reykjavík133127109759350
Difference+69+61+74+44+56-13
Jul – DecJulAugSepOctNovDec
Tallinn728666896761
Reykjavík95135128114149123
Difference+23+49+61+26+82+63
Snowfall (cm)
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn
Reykjavík284029121000012130
Difference
Jan – JunJanFebMarAprMayJun
Tallinn
Reykjavík2840291210
Difference
Jul – DecJulAugSepOctNovDec
Tallinn
Reykjavík00012130
Difference
Cloud cover (%) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn817668655761596168778283
Reykjavík858282797679817979788284
Difference+4+6+13+14+19+18+22+18+11+1-1+2
Jan – JunJanFebMarAprMayJun
Tallinn817668655761
Reykjavík858282797679
Difference+4+6+13+14+19+18
Jul – DecJulAugSepOctNovDec
Tallinn596168778283
Reykjavík817979788284
Difference+22+18+11+1-1+2
Relative humidity (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Tallinn929390868180797881869091
Reykjavík888786848383858686888888
Difference-4-6-3-1+2+3+6+8+5+2-2-4
Jan – JunJanFebMarAprMayJun
Tallinn929390868180
Reykjavík888786848383
Difference-4-6-3-1+2+3
Jul – DecJulAugSepOctNovDec
Tallinn797881869091
Reykjavík858686888888
Difference+6+8+5+2-2-4

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. Tallinn trends → · Reykjavík trends →

Tallinn is projected to shift from Cfb to Dfb by the 2071–2099 window (SSP2-4.5); Reykjavík from Cfc to Cfb.

Methodology & sources

Tallinn

Temperature & precipitation — 1991–2020 normals computed from 14 years of daily observations at Tallinn, a weather station, about 11 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 →