Varna weather in September

In September, Varna sees average daytime highs of 22°C and overnight lows near 17°C, with 49 mm of rain across 5.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 52% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Varna's 4th-clearest and 7th-windiest month. For the whole year in context, see Varna's year-round climate.

Daytime high
22°
4th warmest
Overnight low
17°
9th coldest
Rainfall
49 mm
5.9 wet days
Daylight
12 h 18 min
5:54 AM – 6:11 PM
Cloud cover
43%
4th clearest
Wind
15 km/h
7th windiest
Solar energy
4.22 kWh/m²
Travel score
7.6
out of 10

Varna is city in Varna municipality, Varna oblast, Bulgaria.

Air quality
Elevated
PM2.5 18.6 µg/m³ · 2019
Density
2,067/km²
people per km²
Founded
~574 BCE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 20°C by the end.

A typical September day in Varna reaches about 22°C in the afternoon and slips back to 17°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52418
62318
72318
82318
92318
102318
112318
122317
132217
142217
152217
162217
172217
182217
192117
202116
212116
222116
232116
242116
252016
262016
272015
282015
292015
302015

How September really feels in Varna

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Varna weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 4673.29.20.1
Feb / 386.32.510.20.5
Mar / 478.41.611.61.7
Apr13° / 398.30.113.23.6
May18° / 13°449.3014.46.1
Jun23° / 18°499015.17.3
Jul26° / 20°407014.97.7
Aug26° / 21°335.9013.88.0
Sep22° / 17°495.9012.37.6
Oct17° / 12°567.50.110.85.7
Nov12° / 4970.69.53.1
Dec / 508.12.18.90.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38020
48020
57921
67921
77822
87822
97822
107723
117624
127624
137525
147525
157426
167327
177228
187129
197030
206931
216733
226733
236535
246436
256337
266337
276139
286040
296040
305842

Chance of precipitation in September

Any precipitation

Varna gets around 49 mm of rain over 5.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
120
219
319
418
517
617
716
816
916
1015
1115
1215
1315
1416
1516
1617
1717
1818
1919
2020
2121
2222
2322
2423
2524
2624
2724
2825
2925
3025

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172831231
2192931211
3203030191
4213130171
5233230160
6243230140
7243330130
8253329120
9263429110
10273429100
11273429100
1228342990
1329342890
1430332880
1532322880
1633322780
1734312780
1835302780
1936292680
2038282680
2139282580
2240272580
2342262480
2443262480
2544252370
2645252270
2746252270
2847252160
2948252160
3049262060

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 5:37 AM to 6:10 AM, and sunset from 6:39 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:376:39
213.05:386:37
312.95:396:36
412.95:406:34
512.85:416:32
612.85:436:30
712.75:446:28
812.75:456:26
912.65:466:25
1012.65:476:23
1112.55:486:21
1212.55:496:19
1312.45:516:17
1412.45:526:15
1512.35:536:13
1612.35:546:11
1712.25:556:10
1812.25:566:08
1912.15:576:06
2012.15:596:04
2112.06:006:02
2212.06:016:00
2311.96:025:58
2411.96:035:56
2511.86:045:54
2611.86:055:53
2711.76:075:51
2811.76:085:49
2911.66:095:47
3011.66:105:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.22 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.56 kWh/m² in July across the year — September's 4.22 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Varna?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.6
Sightseeing
3rd-best month of the year
5.2
Beach & pool
4th-best month of the year

September is one of the better times to visit Varna for general sightseeing.

What to pack for Varna in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Varna sees daytime highs around 22°C and nights near 17°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Varna in September

The nearest coast averages about 22°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 km away) is warmest in August at about 25°C and coldest in February near 6°C.

It's comfortable for a long swim from Jun 10 to Oct 3 — about 3.8 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar7Bracing
Apr10Bracing
May16Cool
Jun21Refreshing
Jul24Warm
Aug25Warm
Sep22Refreshing
Oct18Cool
Nov14Bracing
Dec10Bracing

UV index in Varna in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Varna peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7Very high
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Varna in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Varna is worst in March — around 26 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Varna's WHO annual average of 18.6 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1925 µg/m³Dec 1414 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar26Moderate
Apr23Moderate
May20Moderate
Jun20Moderate
Jul18Moderate
Aug17Moderate
Sep16Moderate
Oct17Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Varna?

Varna sits at 43.2°N, 27.9°E, 83 m above sea level, in Bulgaria. The nearest listed city is Asparuhovo, 5.0 km away.

DobrichNessebarAytosShumenMangaliaBurgasKarnobat

Topography around Varna

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Varna.

Within 3 km, the terrain around Varna has significant variations in elevation — a maximum elevation change of 317 m around an average of 80 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 363 m; within 80 km, large variations in elevation — a maximum elevation change of 726 m.

The land around Varna is covered by artificial surfaces (55%) and trees (28%) within 3 km, trees (33%) and water (30%) within 16 km, and cropland (41%), water (28%) and trees (21%) within 80 km.

3 km
317 m
16 km
363 m
80 km
726 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Asparuhovo 5.0 km · Dobrich 39 km · Nessebar 64 km · Aytos 78 km · Shumen 80 km · Mangalia 85 km · Burgas 87 km · Karnobat 98 km

Bulgaria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$20,328
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
96%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
9.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 594
Religion
Christian 65%Muslim 10%none 5%other 0%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Varna (43.2191°, 27.9102°, elevation 83 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).