Best time to visit Constanța

Q: When is the best time to visit Constanța?

September is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 17–24°C (4 rainy days). The top three months by score are September, August, July.

Q: What is the worst time to visit Constanța?

December is the lowest-scoring month (5/10). Typical conditions: 4–9°C (11 rainy days).

Q: When are crowds lowest in Constanța?

Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in September. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Q: Which months in Constanța have good weather but fewer tourists?

May (climate 9/10, crowd index 0) and July (climate 9/10, crowd index 0) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

Q: What is the UV index in Constanța by month?

UV peaks at 8 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 3, Apr 4, May 6, Jun 7, Jul 8, Aug 7, Sep 5, Oct 3, Nov 1, Dec 1.

Q: What is the UV index in Constanța in July?

July is the peak UV month in Constanța, with a daily-peak UV index of 8 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.

Q: How high can UV get in Constanța on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 8 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, August, October. Plan sun protection for the worst case, not the average.

Q: Is air quality in Constanța bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 6 months: January, February, March, April, November, December. The worst month is March with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 21 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.

Re-score for me — drag the dial — every chart recolours live for your heat & sea limits 27°C · sea 29°C

I'm comfortable up to 27°C feels-like

22° heat-averse 30° heat-loving

Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.

Sea feels bathtub at 29°C

26° strict 31° tolerant

Default 29 °C is the Beach Climate Index "bathtub" line (Morgan et al.) — where the sea stops being refreshing and starts feeling like a warm bath.

Saved to this browser. Changes update the strips below.

Sea temp cold <18° chilly 18–21° ideal 22–26° warm 27–28° bathtub 29–30° too warm ≥31°

Recent (2020-2024) 1991-2020 normal compare with the long-term normal

Recent · 2020-2024

Interest Google Trends 2021-2025 searches, not arrivals (?)

Sea Nov 2022 – Dec 2024 (?)

Day · avg daily high (?)

Night · avg overnight low (?)

UV index · On a typical day around midday, UV is about this (?)

123467875311

On the sunniest 1 in 10 days, UV reaches this — and even higher

4679984

PM2.5 air quality · on a typical day (?)

131214109988981012

On the worst 1 in 10 days, PM2.5 reaches this — and even higher

191921161412121312131621

September 10/10 feels 23°C (+1°C vs 1991-2020) · HCI 96/100

Day 24° · Night 17° 60% humidity 23 km/h wind 4 rain days (49h) 249h sun sea 24°C

Thermal 9

Sky 10

Rain 10

Wind 9

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

1991-2020 normal

Sea 1991-2020 normal monthly resolution

Day · avg daily high (?)

Night · avg overnight low (?)

September 9/10 feels 22°C (−1°C vs 2020-2024) · HCI 94/100

Day 23° · Night 16° 60% humidity 19 km/h wind 6 rain days (62h) 232h sun sea 22°C

Thermal 9

Sky 10

Rain 9

Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.

Compare with another destination

Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.

Similar climatesVarna96% · Nesebar96% · Sunny Beach95%

Other destinations with the most-alike year-round climate to Constanța (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Constanța's. Based on the 2020-2024 climatology, not this year's actual weather.

Month-by-month

Month	Temp °C	Feels °C	Rain days	Rain h	Rain h/day	Humidity	Wind km/h	Sun h	UV	Interest	Score
Jan	1–7	3	8	115	14.4	73%	25	124	1	Quiet	6
Feb	2–9	5	5	60	12.0	71%	24	143	2	Quiet	7
Mar	3–10	6	6	90	15.0	70%	24	187	3	Quiet	7
Apr	8–15	12	10	94	9.4	68%	23	226	4	Quiet	8
May	12–19	17	8	82	10.3	71%	21	281	6	Quiet	9
Jun	18–24	25	9	97	10.8	69%	20	288	7	Quiet	8
Jul	21–28	29	5	39	7.8	59%	21	319	8	Quiet	9
Aug	21–28	28	4	45	11.3	60%	20	295	7	Moderate	9
Sep	17–24	23	4	49	12.3	60%	23	249	5	Peak	10
Oct	12–19	17	5	61	12.2	64%	21	201	3	Moderate	9
Nov	7–13	10	8	99	12.4	73%	23	127	1	Moderate	6
Dec	4–9	6	11	149	13.5	79%	24	91	1	Quiet	5

UV Index in Constanța by Month

UV index in Constanța peaks at 8 (high) in July, dropping to 1 (low) in December. June, July, August have high UV — SPF 30+ and sunglasses recommended.

Best months in detail

September

10/10

17–24°C · 4 rain days (49h) · 249 sun hours · 60% humidity · Peak crowd · UV 5 (moderate)

August

9/10

21–28°C · 4 rain days (45h) · 295 sun hours · 60% humidity · Moderate crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)

July

9/10

21–28°C · 5 rain days (39h) · 319 sun hours · 59% humidity · Quiet crowd · UV 8 (high) · sunniest 1 in 10 days reach 9 (very high)

Every month

Show the other 9 months in detail

January

6/10

1–7°C (feels 3°C) · 8 rain days (115h) · 124 sun hours · 73% humidity · Quiet crowd · UV 1 (low)

February

7/10

2–9°C (feels 5°C) · 5 rain days (60h) · 143 sun hours · 71% humidity · Quiet crowd · UV 2 (low)

March

7/10

3–10°C (feels 6°C) · 6 rain days (90h) · 187 sun hours · 70% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)

April

8/10

8–15°C (feels 12°C) · 10 rain days (94h) · 226 sun hours · 68% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)

May

9/10

12–19°C (feels 17°C) · 8 rain days (82h) · 281 sun hours · 71% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)

June

8/10

18–24°C · 9 rain days (97h) · 288 sun hours · 69% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)

October

9/10

12–19°C (feels 17°C) · 5 rain days (61h) · 201 sun hours · 64% humidity · Moderate crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)

November

6/10

7–13°C (feels 10°C) · 8 rain days (99h) · 127 sun hours · 73% humidity · Moderate crowd · UV 1 (low)

December

5/10

4–9°C (feels 6°C) · 11 rain days (149h) · 91 sun hours · 79% humidity · Quiet crowd · UV 1 (low)

Frequently asked questions about visiting Constanța

When is the best time to visit Constanța?

September is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 17–24°C (4 rainy days). The top three months by score are September, August, July.

What is the worst time to visit Constanța?

December is the lowest-scoring month (5/10). Typical conditions: 4–9°C (11 rainy days).

When are crowds lowest in Constanța?

Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in September. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Which months in Constanța have good weather but fewer tourists?

May (climate 9/10, crowd index 0) and July (climate 9/10, crowd index 0) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Constanța by month?

UV peaks at 8 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 3, Apr 4, May 6, Jun 7, Jul 8, Aug 7, Sep 5, Oct 3, Nov 1, Dec 1.

What is the UV index in Constanța in July?

July is the peak UV month in Constanța, with a daily-peak UV index of 8 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.

How high can UV get in Constanța on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 8 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, August, October. Plan sun protection for the worst case, not the average.

Is air quality in Constanța bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 6 months: January, February, March, April, November, December. The worst month is March with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 21 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.