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Constanța climate by month
What the weather is like
Constanța has a humid subtropical climate (Köppen Cfa): rain spread through the year and no real dry season.
The warmest month is July, when afternoons average 28° and nights 19°. January is the coolest month, with highs of 5° and lows of -1°. The difference between the warmest and the coolest month is about 22°, a large swing typical of continental interiors.
About 454 mm of precipitation falls in an average year. June is the wettest month (44 mm, 9 wet days) and August the driest (33 mm, 4 wet days). Cloud cover ranges from 15% in July to 50% in December.
The sea reaches about 25° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Bucharest, the capital, Constanța is 2.6° cooler on a July afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 28° · July
- Coldest nights
- -1° · January
- Wettest month
- June
- Driest month
- August
- Clearest skies
- July · 15% cloud
- Warmest sea
- 25° · August
- Longest day
- 15 h 29 min
- Shortest day
- 8 h 54 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 5° | 7° | 10° | 15° | 21° | 26° | 28° | 28° | 23° | 18° | 12° | 7° |
| Average low | -1° | 0° | 3° | 8° | 13° | 17° | 19° | 20° | 15° | 11° | 6° | 1° |
| Precipitation | 29 mm | 25 mm | 35 mm | 34 mm | 40 mm | 44 mm | 41 mm | 33 mm | 48 mm | 40 mm | 47 mm | 38 mm |
| Wet days (≥1 mm) | 7 | 6 | 6.7 | 6.6 | 8 | 9.1 | 7.8 | 4.4 | 5.7 | 6.5 | 6.5 | 7.1 |
| Cloud cover | 49% | 47% | 45% | 36% | 28% | 23% | 15% | 15% | 25% | 35% | 45% | 50% |
| Sea temperature | 7° | 6° | 7° | 10° | 16° | 21° | 24° | 25° | 22° | 18° | 14° | 10° |
| Daylight | 9h 14 | 10h 28 | 11h 52 | 13h 26 | 14h 45 | 15h 29 | 15h 12 | 14h 03 | 12h 34 | 11h 03 | 9h 39 | 8h 54 |
| Month score | 34 | 37 | 37 | 65 | 81 | 76 | 69 | 77 | 87 | 80 | 46 | 33 |