15.09
tue
tue
Day

75°F
S 11 mph
Precip.
9%
9%
Night

66°F
S 3 mph
Precip.
5%
5%
16.09
wed
wed
Day

72°F
S 10 mph
Precip.
49%
49%
Night

66°F
S 5 mph
Precip.
22%
22%
17.09
thu
thu
Day

72°F
SE 15 mph
Precip.
17%
17%
Night

66°F
SE 11 mph
Precip.
7%
7%
18.09
fri
fri
Day

73°F
S 15 mph
Precip.
2%
2%
Night

66°F
SE 4 mph
Precip.
5%
5%
19.09
sat
sat
Day

77°F
S 12 mph
Precip.
1%
1%
Night

66°F
S 3 mph
Precip.
5%
5%
20.09
sun
sun
Day

77°F
SE 15 mph
Precip.
1%
1%
Night

68°F
S 5 mph
Precip.
20%
20%
21.09
mon
mon
Day

75°F
SE 14 mph
Precip.
10%
10%
Night

68°F
S 4 mph
Precip.
10%
10%
sea water
temperature
temperature
| Heraklion |
monthly
weather
weather
| Heraklion |
current
weather
weather
| Heraklion |
14 days
forecast
forecast
| Heraklion |
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 77.9°F. The highest and lowest sea temperatures during the month were 79.5°F and 74.8°F.
Air temperature in Heraklion, °F
Precipitation total in Heraklion, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Heraklion
Heraklion on a weather map
Places in Greece:
Name
°F
24 Hours Forecast
Heraklion
Local time: 05:54
September 15, tuesday
0600

66°F
S
2 mph
2 mph
0900

72°F
S
7 mph
7 mph
1200

75°F
S
11 mph
11 mph
1500

75°F
S
12 mph
12 mph
1800

73°F
S
9 mph
9 mph
2100

68°F
S
4 mph
4 mph
September 16, wednesday
0000

66°F
S
3 mph
3 mph
0300

66°F
S
1 mph
1 mph


























