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Cluj-Napoca, Romania climate
Cfb Oceanic / temperate
Cluj-Napoca has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 27°C, while the coldest is January averaging around −5°C at night. Around 621 mm of precipitation falls each year, peaking in June (91 mm) and easing off in February (25 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsCluj-Napoca climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 1 | 4 | 10 | 17 | 21 | 25 | 27 | 27 | 22 | 16 | 8 | 2 |
| Avg temp (°C) | −2 | 0 | 5 | 11 | 15 | 19 | 20 | 20 | 16 | 10 | 4 | −1 |
| Avg low (°C) | −5 | −4 | 0 | 5 | 9 | 13 | 14 | 14 | 10 | 5 | 1 | −4 |
| Precipitation (mm) | 27 | 25 | 35 | 51 | 72 | 91 | 87 | 65 | 55 | 46 | 34 | 34 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 1 | 4 | 10 | 17 | 21 | 25 |
| Avg temp (°C) | −2 | 0 | 5 | 11 | 15 | 19 |
| Avg low (°C) | −5 | −4 | 0 | 5 | 9 | 13 |
| Precipitation (mm) | 27 | 25 | 35 | 51 | 72 | 91 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 22 | 16 | 8 | 2 |
| Avg temp (°C) | 20 | 20 | 16 | 10 | 4 | −1 |
| Avg low (°C) | 14 | 14 | 10 | 5 | 1 | −4 |
| Precipitation (mm) | 87 | 65 | 55 | 46 | 34 | 34 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 11 | 12 | 14 | 14 | 13 | 10 | 11 | 11 | 10 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.9 | 3 | 4 | 0.2 | — | — | — |
| Days with low ≤ 0°C (days) | 28 | 22 | 16 | 4 | 0.2 | — | — | — | — | 5 | 15 | 24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 11 | 12 | 14 | 14 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.9 |
| Days with low ≤ 0°C (days) | 28 | 22 | 16 | 4 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 11 | 11 | 10 | 12 |
| Days with high ≥ 32°C (days) | 3 | 4 | 0.2 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 5 | 15 | 24 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 72 | 69 | 68 | 68 | 62 | 55 | 49 | 60 | 62 | 68 | 72 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 4 | 4 | 5 | 8 | 10 | 7 | 7 | 4 | 3 |
| Partly cloudy days (30–70%) | 11 | 7 | 9 | 9 | 10 | 12 | 13 | 12 | 9 | 9 | 9 | 8 |
| Cloudy days (≥ 70%) | 18 | 18 | 18 | 17 | 17 | 14 | 11 | 9 | 14 | 15 | 17 | 20 |
| Relative humidity (%) | 90 | 85 | 77 | 72 | 70 | 67 | 63 | 60 | 66 | 74 | 84 | 89 |
| Wind speed (km/h) | 7.5 | 8.4 | 8.6 | 7.7 | 6.9 | 6.6 | 6.4 | 5.9 | 6.6 | 6.7 | 7.1 | 6.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 72 | 69 | 68 | 68 | 62 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 4 | 4 | 5 |
| Partly cloudy days (30–70%) | 11 | 7 | 9 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 18 | 18 | 18 | 17 | 17 | 14 |
| Relative humidity (%) | 90 | 85 | 77 | 72 | 70 | 67 |
| Wind speed (km/h) | 7.5 | 8.4 | 8.6 | 7.7 | 6.9 | 6.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 49 | 60 | 62 | 68 | 72 |
| Clear days (≤ 30% cloud) | 8 | 10 | 7 | 7 | 4 | 3 |
| Partly cloudy days (30–70%) | 13 | 12 | 9 | 9 | 9 | 8 |
| Cloudy days (≥ 70%) | 11 | 9 | 14 | 15 | 17 | 20 |
| Relative humidity (%) | 63 | 60 | 66 | 74 | 84 | 89 |
| Wind speed (km/h) | 6.4 | 5.9 | 6.6 | 6.7 | 7.1 | 6.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Cluj Napoca, a weather station, about 3 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.