17.09
thu
thu
Day

72°F
W 10 mph
Precip.
1%
1%
Night

63°F
SW 2 mph
Precip.
9%
9%
18.09
fri
fri
Day

73°F
W 7 mph
Precip.
2%
2%
Night

63°F
SW 1 mph
Precip.
7%
7%
19.09
sat
sat
Day

75°F
W 7 mph
Precip.
2%
2%
Night

63°F
SW 2 mph
Precip.
10%
10%
20.09
sun
sun
Day

77°F
W 8 mph
Precip.
9%
9%
Night

64°F
E 2 mph
Precip.
6%
6%
21.09
mon
mon
Day

81°F
NE 8 mph
Precip.
1%
1%
Night

63°F
SE 2 mph
Precip.
25%
25%
22.09
tue
tue
Day

57°F
S 11 mph
Precip.
17%
17%
Night

52°F
SE 9 mph
Precip.
7%
7%
23.09
wed
wed
Day

64°F
SE 7 mph
Precip.
3%
3%
Night

54°F
S 6 mph
Precip.
17%
17%
24.09
thu
thu
Day

66°F
E 4 mph
Precip.
1%
1%
Night

57°F
NE 4 mph
Precip.
3%
3%
25.09
fri
fri
Day

72°F
SE 11 mph
Precip.
4%
4%
Night

59°F
W 8 mph
Precip.
65%
65%
26.09
sat
sat
Day

61°F
SE 12 mph
Precip.
12%
12%
Night

54°F
S 7 mph
Precip.
17%
17%
27.09
sun
sun
Day

50°F
S 17 mph
Precip.
43%
43%
Night

46°F
E 4 mph
Precip.
65%
65%
28.09
mon
mon
Day

55°F
NE 2 mph
Precip.
15%
15%
Night

50°F
E 2 mph
Precip.
33%
33%
29.09
tue
tue
Day

54°F
S 2 mph
Precip.
22%
22%
Night

54°F
SE 4 mph
Precip.
21%
21%
30.09
wed
wed
Day

64°F
N 4 mph
Precip.
1%
1%
Night

61°F
NW 6 mph
Precip.
20%
20%
sea water
temperature
temperature
| Sveti Vlas |
monthly
weather
weather
| Sveti Vlas |
current
weather
weather
| Sveti Vlas |
7 days
forecast
forecast
| Sveti Vlas |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 75.5°F. The highest and lowest sea temperatures during the month were 76.6°F and 73.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 65.6°F. The highest and lowest sea temperatures during the month were 70.7°F and 62.8°F.
Air temperature in Sveti Vlas, °F
Precipitation total in Sveti Vlas, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sveti Vlas
Sveti Vlas on a weather map
Places in Bulgaria:
Name
°F
24 Hours Forecast
Sveti Vlas
Local time: 12:16
September 17, thursday
1500

73°F
W
11 mph
11 mph
1800

70°F
W
9 mph
9 mph
2100

63°F
SW
5 mph
5 mph
September 18, friday
0000

63°F
SW
2 mph
2 mph
0300

61°F
S
2 mph
2 mph
0600

59°F
S
3 mph
3 mph
0900

66°F
S
1 mph
1 mph
1200

73°F
W
7 mph
7 mph

























