Sliven weather in July
In July, Sliven sees average daytime highs of 27°C and overnight lows near 16°C, with 89 mm of rain across 11.7 wet days and about 14.8 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 54% of the time in July, and the air most often feels humid.
Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Sliven's 2nd-clearest and 8th-windiest month. For the whole year in context, see Sliven's year-round climate.
- Daytime high
- 27°
- 2nd warmest
- Overnight low
- 16°
- 12th coldest
- Rainfall
- 89 mm
- 11.7 wet days
- Daylight
- 14 h 48 min
- 4:55 AM – 7:46 PM
- Cloud cover
- 40%
- 2nd clearest
- Wind
- 7 km/h
- 8th windiest
- Solar energy
- 6.45 kWh/m²
- Travel score
- 6.7
- out of 10
Sliven is city in Sliven municipality, Sliven oblast, Bulgaria.
- Air quality
- Good
- PM10 17.8 µg/m³ · 2019
- Density
- 432/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Day-to-day highs hold fairly steady near 27°C through the month.
A typical July day in Sliven reaches about 27°C in the afternoon and slips back to 16°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 |
| Avg low (°C) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 16 |
| 2 | 26 | 16 |
| 3 | 26 | 16 |
| 4 | 26 | 16 |
| 5 | 26 | 16 |
| 6 | 26 | 16 |
| 7 | 26 | 16 |
| 8 | 26 | 16 |
| 9 | 26 | 16 |
| 10 | 26 | 16 |
| 11 | 26 | 16 |
| 12 | 26 | 16 |
| 13 | 27 | 16 |
| 14 | 27 | 16 |
| 15 | 27 | 16 |
| 16 | 27 | 16 |
| 17 | 27 | 16 |
| 18 | 27 | 16 |
| 19 | 27 | 16 |
| 20 | 27 | 16 |
| 21 | 27 | 17 |
| 22 | 27 | 17 |
| 23 | 27 | 17 |
| 24 | 27 | 17 |
| 25 | 27 | 17 |
| 26 | 27 | 17 |
| 27 | 27 | 17 |
| 28 | 27 | 17 |
| 29 | 28 | 17 |
| 30 | 28 | 17 |
| 31 | 28 | 17 |
How July really feels in Sliven
Once humidity and wind are folded in, July 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.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sliven weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 3° / -3° | 53 | 7.7 | 5.1 | 9.2 | 0.0 |
| Feb | 6° / -2° | 54 | 8 | 5.1 | 10.3 | 0.3 |
| Mar | 10° / 1° | 67 | 10.7 | 4.3 | 11.6 | 2.0 |
| Apr | 15° / 6° | 75 | 12.3 | 0.9 | 13.1 | 4.2 |
| May | 20° / 10° | 106 | 14.5 | 0 | 14.4 | 5.7 |
| Jun | 24° / 14° | 100 | 14 | 0 | 15.1 | 6.3 |
| Jul | 27° / 16° | 89 | 11.7 | 0 | 14.8 | 6.7 |
| Aug | 27° / 16° | 56 | 8 | 0 | 13.7 | 7.2 |
| Sep | 22° / 12° | 58 | 7.8 | 0 | 12.3 | 7.3 |
| Oct | 16° / 8° | 63 | 7.8 | 0.4 | 10.8 | 5.4 |
| Nov | 10° / 3° | 58 | 7.4 | 2.1 | 9.6 | 2.3 |
| Dec | 5° / -1° | 63 | 8.6 | 4.5 | 8.9 | 0.1 |
Cloud cover in July
The sky is clear or mostly clear about 54% of the time in July.
Beyond those clear spells, partly cloudy skies cover about 24% of July, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 74 | 74 | 74 | 75 | 75 | 74 | 75 | 75 | 76 | 76 | 77 | 77 | 78 | 78 | 78 | 79 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 81 |
| Cloudier (%) | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 74 | 26 |
| 2 | 74 | 26 |
| 3 | 74 | 26 |
| 4 | 75 | 25 |
| 5 | 75 | 25 |
| 6 | 74 | 26 |
| 7 | 75 | 25 |
| 8 | 75 | 25 |
| 9 | 76 | 24 |
| 10 | 76 | 24 |
| 11 | 77 | 23 |
| 12 | 77 | 23 |
| 13 | 78 | 22 |
| 14 | 78 | 22 |
| 15 | 78 | 22 |
| 16 | 79 | 21 |
| 17 | 80 | 20 |
| 18 | 80 | 20 |
| 19 | 80 | 20 |
| 20 | 80 | 20 |
| 21 | 80 | 20 |
| 22 | 80 | 20 |
| 23 | 80 | 20 |
| 24 | 80 | 20 |
| 25 | 80 | 20 |
| 26 | 80 | 20 |
| 27 | 80 | 20 |
| 28 | 80 | 20 |
| 29 | 80 | 20 |
| 30 | 80 | 20 |
| 31 | 81 | 19 |
Chance of precipitation in July
Sliven gets around 89 mm of rain over 11.7 wet days in July. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 37% and peaks near 41% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 32 |
| Rain chance (%) | |
|---|---|
| 1 | 40 |
| 2 | 40 |
| 3 | 41 |
| 4 | 41 |
| 5 | 41 |
| 6 | 41 |
| 7 | 41 |
| 8 | 40 |
| 9 | 40 |
| 10 | 39 |
| 11 | 39 |
| 12 | 38 |
| 13 | 38 |
| 14 | 37 |
| 15 | 37 |
| 16 | 36 |
| 17 | 36 |
| 18 | 35 |
| 19 | 35 |
| 20 | 35 |
| 21 | 34 |
| 22 | 34 |
| 23 | 34 |
| 24 | 34 |
| 25 | 34 |
| 26 | 33 |
| 27 | 33 |
| 28 | 33 |
| 29 | 33 |
| 30 | 33 |
| 31 | 32 |
Humidity in July
Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the humid band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 6 |
| Comfortable (%) | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 32 | 32 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 39 | 39 | 38 | 37 | 37 |
| Humid (%) | 39 | 39 | 40 | 40 | 41 | 41 | 42 | 42 | 42 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 41 | 41 | 42 | 43 | 44 | 45 | 46 | 46 | 47 |
| Muggy (%) | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 22 | 34 | 39 | 6 |
| 2 | 22 | 33 | 39 | 6 |
| 3 | 22 | 33 | 40 | 6 |
| 4 | 22 | 32 | 40 | 6 |
| 5 | 22 | 32 | 41 | 6 |
| 6 | 22 | 31 | 41 | 5 |
| 7 | 21 | 31 | 42 | 5 |
| 8 | 21 | 32 | 42 | 5 |
| 9 | 21 | 32 | 42 | 5 |
| 10 | 21 | 32 | 41 | 5 |
| 11 | 21 | 33 | 41 | 5 |
| 12 | 20 | 34 | 41 | 5 |
| 13 | 20 | 35 | 40 | 5 |
| 14 | 19 | 36 | 40 | 5 |
| 15 | 19 | 37 | 39 | 5 |
| 16 | 18 | 38 | 39 | 5 |
| 17 | 17 | 39 | 39 | 5 |
| 18 | 16 | 40 | 39 | 6 |
| 19 | 15 | 40 | 39 | 6 |
| 20 | 14 | 41 | 39 | 6 |
| 21 | 13 | 41 | 40 | 6 |
| 22 | 12 | 41 | 40 | 7 |
| 23 | 11 | 41 | 41 | 7 |
| 24 | 10 | 41 | 41 | 8 |
| 25 | 9 | 41 | 42 | 8 |
| 26 | 8 | 40 | 43 | 9 |
| 27 | 8 | 39 | 44 | 9 |
| 28 | 7 | 39 | 45 | 9 |
| 29 | 7 | 38 | 46 | 9 |
| 30 | 7 | 37 | 46 | 10 |
| 31 | 6 | 37 | 47 | 10 |
Wind in July
Winds average 7 km/h in July.
Across July, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in July
Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over July. Sunrise moves from 4:45 AM to 5:09 AM, and sunset from 7:51 PM to 7:33 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 |
| Sunrise (AM) | 4:45 | 4:45 | 4:46 | 4:46 | 4:47 | 4:48 | 4:48 | 4:49 | 4:50 | 4:50 | 4:51 | 4:52 | 4:52 | 4:53 | 4:54 | 4:55 | 4:56 | 4:57 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:02 | 5:03 | 5:04 | 5:05 | 5:06 | 5:07 | 5:08 | 5:09 |
| Sunset (PM) | 7:51 | 7:51 | 7:51 | 7:51 | 7:50 | 7:50 | 7:50 | 7:50 | 7:49 | 7:49 | 7:48 | 7:48 | 7:47 | 7:47 | 7:46 | 7:46 | 7:45 | 7:44 | 7:44 | 7:43 | 7:42 | 7:41 | 7:41 | 7:40 | 7:39 | 7:38 | 7:37 | 7:36 | 7:35 | 7:34 | 7:33 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.1 | 4:45 | 7:51 |
| 2 | 15.1 | 4:45 | 7:51 |
| 3 | 15.1 | 4:46 | 7:51 |
| 4 | 15.1 | 4:46 | 7:51 |
| 5 | 15.1 | 4:47 | 7:50 |
| 6 | 15.0 | 4:48 | 7:50 |
| 7 | 15.0 | 4:48 | 7:50 |
| 8 | 15.0 | 4:49 | 7:50 |
| 9 | 15.0 | 4:50 | 7:49 |
| 10 | 15.0 | 4:50 | 7:49 |
| 11 | 15.0 | 4:51 | 7:48 |
| 12 | 14.9 | 4:52 | 7:48 |
| 13 | 14.9 | 4:52 | 7:47 |
| 14 | 14.9 | 4:53 | 7:47 |
| 15 | 14.9 | 4:54 | 7:46 |
| 16 | 14.8 | 4:55 | 7:46 |
| 17 | 14.8 | 4:56 | 7:45 |
| 18 | 14.8 | 4:57 | 7:44 |
| 19 | 14.8 | 4:57 | 7:44 |
| 20 | 14.7 | 4:58 | 7:43 |
| 21 | 14.7 | 4:59 | 7:42 |
| 22 | 14.7 | 5:00 | 7:41 |
| 23 | 14.7 | 5:01 | 7:41 |
| 24 | 14.6 | 5:02 | 7:40 |
| 25 | 14.6 | 5:03 | 7:39 |
| 26 | 14.6 | 5:04 | 7:38 |
| 27 | 14.5 | 5:05 | 7:37 |
| 28 | 14.5 | 5:06 | 7:36 |
| 29 | 14.5 | 5:07 | 7:35 |
| 30 | 14.4 | 5:08 | 7:34 |
| 31 | 14.4 | 5:09 | 7:33 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.45 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.43 kWh/m² to a high of 6.45 kWh/m² in June across the year — July's 6.45 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.5 | Intense |
| 2 | 6.5 | Intense |
| 3 | 6.5 | Intense |
| 4 | 6.5 | Intense |
| 5 | 6.5 | Intense |
| 6 | 6.5 | Intense |
| 7 | 6.5 | Intense |
| 8 | 6.5 | Intense |
| 9 | 6.5 | Intense |
| 10 | 6.5 | Intense |
| 11 | 6.5 | Intense |
| 12 | 6.5 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.5 | Intense |
| 15 | 6.5 | Intense |
| 16 | 6.5 | Intense |
| 17 | 6.5 | Intense |
| 18 | 6.5 | Intense |
| 19 | 6.5 | Intense |
| 20 | 6.4 | Intense |
| 21 | 6.4 | Intense |
| 22 | 6.4 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.4 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.3 | Intense |
| 29 | 6.3 | Intense |
| 30 | 6.3 | Intense |
| 31 | 6.2 | Intense |
Is July a good time to visit Sliven?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Sliven for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sliven in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Sliven sees daytime highs around 27°C and nights near 16°C. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.
UV index in Sliven in July
Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sliven peaks around July 17 at about 9 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 8 | 6 | 8 | 9 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Very high | High | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 3 | Moderate |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Sliven in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Sliven is worst in March — around 16 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (September, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 14 | 16 | 15 | 13 | 13 | 12 | 11 | 10 | 10 | 11 | 11 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 15 | Moderate |
| May | 13 | Moderate |
| Jun | 13 | Moderate |
| Jul | 12 | Good |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 11 | Good |
| Dec | 11 | Good |
Where is Sliven?
Sliven sits at 42.7°N, 26.3°E, 281 m above sea level, in Bulgaria. The nearest listed city is Yambol, 27 km away.
Topography around Sliven
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sliven.
Within 3 km, the terrain around Sliven has significant variations in elevation — a maximum elevation change of 598 m around an average of 351 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,041 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,510 m.
The land around Sliven is covered by trees (43%), artificial surfaces (33%) and grassland (21%) within 3 km, trees (52%) and cropland (29%) within 16 km, and trees (42%) and cropland (40%) within 80 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
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 Sliven (42.6861°, 26.3256°, elevation 281 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. 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).