Cluj-Napoca climate
Cluj-Napoca (Romania) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 10 °C50 °F, and about 680 mm27 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Cluj-Napoca climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 134 | −620 | −327 | 351.4 | 28 |
| Feb | 439 | −523 | 031 | 341.3 | 24 |
| Mar | 1050 | −130 | 440 | 431.7 | 18 |
| Apr | 1661 | 540 | 1051 | 512.0 | 4 |
| May | 2171 | 1050 | 1660 | 813.2 | 0 |
| Jun | 2577 | 1458 | 2068 | 973.8 | 0 |
| Jul | 2882 | 1661 | 2271 | 903.5 | 0 |
| Aug | 2883 | 1660 | 2272 | 632.5 | 0 |
| Sep | 2373 | 1151 | 1762 | 532.1 | 0 |
| Oct | 1661 | 541 | 1051 | 532.1 | 4 |
| Nov | 949 | 033 | 541 | 401.6 | 13 |
| Dec | 236 | −524 | −130 | 401.6 | 26 |
| Year | 2883 | −620 | 1050 | 68027 | 116 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 89% | 78% | 1.2 | 8:56 |
| Feb | 85% | 79% | 2.0 | 10:14 |
| Mar | 78% | 70% | 3.2 | 11:46 |
| Apr | 72% | 65% | 4.5 | 13:31 |
| May | 71% | 68% | 5.3 | 15:01 |
| Jun | 69% | 61% | 5.9 | 15:50 |
| Jul | 65% | 53% | 5.9 | 15:30 |
| Aug | 62% | 46% | 5.3 | 14:11 |
| Sep | 65% | 59% | 3.8 | 12:29 |
| Oct | 75% | 61% | 2.6 | 10:47 |
| Nov | 84% | 70% | 1.5 | 9:18 |
| Dec | 89% | 79% | 1.0 | 8:33 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Cluj-Napoca is like
The warmest month is August, with an average high of 28 °C83 °F and a low of 16 °C60 °F. The coldest is January, when highs average 1 °C34 °F and lows −6 °C20 °F. Seasons are strongly marked: the warmest month is on average 24.6 °C44.2 °F warmer than the coldest.
Annual precipitation is moderate at about 680 mm27 in. The wettest three-month stretch is May–July, which brings 39% of the annual total. The wettest month is June (97 mm3.8 in), the driest is February (34 mm1.3 in).
Relative humidity ranges from 62% in August to 89% in December. The clearest skies (lowest average cloud amount, 46%) are typical of August. Average wind speed near the ground ranges from 6 km/h (4 mph) in August to 9 km/h (5 mph) in March. Daylight lasts from about 8.6 hours in December to 15.8 hours in June.
A lasting snow cover is typical in December–February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Cluj-Napoca
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 21 °C71 °F to 28 °C83 °F with 53 mm2.1 in to 97 mm3.8 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 1 °C34 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Cluj-Napoca
- Winter (December–February) — highs 134 to 4 °C39 °F, lows −620 to −5 °C24 °F, about 36 mm1.4 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1050 to 21 °C71 °F, lows −130 to 10 °C50 °F, about 58 mm2.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2577 to 28 °C83 °F, lows 1458 to 16 °C61 °F, about 83 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 949 to 23 °C73 °F, lows 033 to 11 °C51 °F, about 49 mm1.9 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
How Cluj-Napoca compares
Compared with Iaşi, about 307 km to the east, Cluj-Napoca is on average 0.8 °C1.4 °F cooler and receives 18% more precipitation (680 mm27 in vs 576 mm23 in). The difference is largest in July (2 °C3.5 °F cooler).
Of the 20 places in Romania covered by World Climates, Cluj-Napoca is the 18th warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the Romania climate page.
Places in other countries with the most similar temperature and rainfall pattern: Košice (Slovakia, Dfb), Miskolc (Hungary, Dfa) and Uzhhorod (Ukraine, Dfb).
Nearby places
- Târgu Mureş 77 km · 11 °C51 °F · 661 mm26 in
- Baia Mare 99 km · 10 °C51 °F · 800 mm32 in
- Sibiu 115 km · 10 °C51 °F · 700 mm28 in
- Satu Mare 128 km · 11 °C52 °F · 759 mm30 in
- Oradea 131 km · 12 °C53 °F · 637 mm25 in
- Debrecen 172 km · 11 °C53 °F · 609 mm24 in
- Arad 186 km · 12 °C54 °F · 633 mm25 in
- Nyíregyháza 194 km · 11 °C52 °F · 624 mm25 in
Frequently asked questions
What is the warmest month in Cluj-Napoca?
August is the warmest month in Cluj-Napoca, with an average high of 28 °C (83 °F) and an average low of 16 °C (60 °F).
What is the coldest month in Cluj-Napoca?
January is the coldest month, with an average high of 1 °C (34 °F) and an average low of -6 °C (20 °F).
When does it rain the most in Cluj-Napoca?
June is the wettest month with about 97 mm (3.8 in) of precipitation; February is the driest with about 34 mm (1.3 in).
What is the best time to visit Cluj-Napoca?
Judging by long-term averages, the most comfortable months are May–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 404 m, while Cluj-Napoca lies at about 352 m. Temperatures on this page were therefore adjusted by +0.3 °C0.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.