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Constanţa, Romania climate
Cfa Humid subtropical
Constanţa has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 28°C, while the coldest is January averaging around −1°C at night. Precipitation is fairly even year-round, totalling about 468 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 countsConstanţa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 10 | 15 | 21 | 25 | 28 | 28 | 23 | 18 | 12 | 7 |
| Avg temp (°C) | 2 | 3 | 7 | 11 | 17 | 22 | 24 | 24 | 19 | 14 | 9 | 4 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 | 20 | 20 | 16 | 11 | 6 | 1 |
| Precipitation (mm) | 36 | 27 | 37 | 32 | 45 | 42 | 42 | 36 | 44 | 44 | 41 | 41 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 10 | 15 | 21 | 25 |
| Avg temp (°C) | 2 | 3 | 7 | 11 | 17 | 22 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 |
| Precipitation (mm) | 36 | 27 | 37 | 32 | 45 | 42 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 23 | 18 | 12 | 7 |
| Avg temp (°C) | 24 | 24 | 19 | 14 | 9 | 4 |
| Avg low (°C) | 20 | 20 | 16 | 11 | 6 | 1 |
| Precipitation (mm) | 42 | 36 | 44 | 44 | 41 | 41 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 8 | 8 | 9 | 7 | 6 | 5 | 6 | 7 | 8 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.5 | 2 | 1 | 0.2 | — | — | — |
| Days with low ≤ 0°C (days) | 18 | 13 | 6 | 0.3 | — | — | — | — | — | 0.2 | 4 | 14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 8 | 8 | 9 | 7 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 0.5 |
| Days with low ≤ 0°C (days) | 18 | 13 | 6 | 0.3 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 6 | 7 | 8 | 9 |
| Days with high ≥ 32°C (days) | 2 | 1 | 0.2 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.2 | 4 | 14 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 74 | 70 | 65 | 59 | 52 | 42 | 40 | 54 | 65 | 73 | 75 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 5 | 6 | 8 | 13 | 15 | 8 | 5 | 3 | 3 |
| Partly cloudy days (30–70%) | 8 | 7 | 9 | 10 | 12 | 13 | 12 | 11 | 12 | 11 | 9 | 8 |
| Cloudy days (≥ 70%) | 20 | 19 | 18 | 15 | 13 | 9 | 6 | 6 | 10 | 15 | 19 | 20 |
| Relative humidity (%) | 86 | 83 | 80 | 78 | 74 | 69 | 65 | 64 | 69 | 76 | 82 | 86 |
| Wind speed (km/h) | 17.4 | 17.1 | 15.6 | 13.2 | 11.9 | 11.8 | 11.8 | 12.7 | 14.4 | 15.4 | 16.0 | 17.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 74 | 70 | 65 | 59 | 52 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 5 | 6 | 8 |
| Partly cloudy days (30–70%) | 8 | 7 | 9 | 10 | 12 | 13 |
| Cloudy days (≥ 70%) | 20 | 19 | 18 | 15 | 13 | 9 |
| Relative humidity (%) | 86 | 83 | 80 | 78 | 74 | 69 |
| Wind speed (km/h) | 17.4 | 17.1 | 15.6 | 13.2 | 11.9 | 11.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 40 | 54 | 65 | 73 | 75 |
| Clear days (≤ 30% cloud) | 13 | 15 | 8 | 5 | 3 | 3 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 11 | 9 | 8 |
| Cloudy days (≥ 70%) | 6 | 6 | 10 | 15 | 19 | 20 |
| Relative humidity (%) | 65 | 64 | 69 | 76 | 82 | 86 |
| Wind speed (km/h) | 11.8 | 12.7 | 14.4 | 15.4 | 16.0 | 17.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Constanta, a weather station, about 4 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.