Similar Climates › City Pairings › Reykjavík ≈ Tromsø
City Pairings
close match
Reykjavík, Iceland and Tromsø, Norway are a close climate match — 1,844 km (1,146 mi) apart. Reykjavík is Köppen zone Cfc; Tromsø is Dfc.
See Reykjavík on the interactive map →Reykjavík is classed subpolar oceanic (Cfc) while Tromsø is subarctic (Dfc) — different Köppen labels, but January and July still land close enough to pair. They sit only about 1,844 km (1,146 mi) apart — a short hop on the atlas for a climate match this close.
It is a close match: day-to-day weather in Tromsø should feel familiar if you know Reykjavík. January means differ by 4°C (Tromsø cooler); July by 0°C (Tromsø warmer). Rainfall shifts more: Tromsø is 25 mm wetter in July, and 15 mm wetter in January.
Sunshine stays close: Tromsø at 5.8 h/day on average versus 5.5 h/day in Reykjavík (January 0.1 h / 1.5 h, July 11.6 h / 9.6 h). PM2.5 averages stay near each other (3 µg/m³ in Tromsø, 4 in Reykjavík). Humidity: dew point in Tromsø runs about 4°C lower in January (-7°C vs -3°C), so the air feels drier.
January & July · °C and mm
Compare Reykjavík and Tromsø month by month on the interactive map →
See Tromsø's climate twin on its own page.
On Similar Climates, Tromsø, Norway is the closest distant match for Reykjavík, Iceland — scored close, about 1,844 km (1,146 mi) away.
Reykjavík and Tromsø are separated by roughly 1,844 km (1,146 mi) on the great-circle route.
Yes — both cities are in the same hemisphere, so summer and winter fall in the same calendar months.
No — Reykjavík is subpolar oceanic (Cfc) and Tromsø is subarctic (Dfc), but the January and July numbers still align closely enough to pair.
Reykjavík has a subpolar oceanic climate (Cfc). January averages a high of 3°C and a low of -2°C with 80 mm of rain; July averages 14°C / 9°C and 50 mm.
Reykjavík averages about 1.5 hours of sunshine a day in January and 9.6 hours in July.
January PM2.5 averages about 4 µg/m³ (US AQI 34); July averages 4.9 µg/m³ (US AQI 29).
Other close climate matches for Reykjavík: Stanley (fair), Petropavlovsk-Kamchatsky (fair), Punta Arenas (loose).
All subpolar oceanic (Cfc) cities on Similar Climates →
Explore Reykjavík and Tromsø on the interactive map →