Bulgaria
St Constantine and Helena Weather
St Constantine and Helena weather in September
Weather in St Constantine and Helena: September
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Average day temperature: | 75.3°F |
| Average night temperature: | 63.7°F | |
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Sea water temperature: | 74.0°F |
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Number of sunny days: | 22 days |
| Day length: | 11.8 - 13.2 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.7 in. | |
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forecast
| St Constantine and Helena |
temperature
| St Constantine and Helena |
Air temperature in September, °F
The highest day temperature during September of 2025 was 86°F. At the same time the lowest night temperature was 50°F. Daily and nightly averages during September were 74.6°F and 61.4°F.
Sea water temperature in St Constantine and Helena in September, °F
The average sea water temperature in September of 2025 was 74.7°F. The highest and lowest sea temperatures during the month were 77.4°F and 69.8°F.
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in St Constantine and Helena in September is 0.5 in. Other months of the year show relatively similar values.
The average wind speed value in September is 10.4 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.3.
Best time for vacation in St Constantine and Helena
St Constantine and Helena on a weather map
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