September weather forecastPrimorsko, Bulgaria
September
Weather in September
September in Primorsko signals the beginning of fall. The weather becomes considerably cooler than August, with the mercury falling to a more pleasant 24.8°C (76.6°F). However, autumn showers become prominent as the rainfall charts a steep rise. The sea continues to remain warm enough for swimming, although daylight hours start to lessen. The shift from September’s relatively balmy weather to the increasingly cool October becomes distinct.Temperature
Primorsko's September weather shows a modest shift in high-temperatures, falling from August's 28.8°C (83.8°F) to a still moderately hot 24.8°C (76.6°F). Nightly temperatures drop to an average low of 16.7°C (62.1°F) in September.Rainfall
In Primorsko, in September, 67mm (2.64") of precipitation is typically accumulated. Throughout the year, 576mm (22.68") of rain is accumulated.Sea temperature
In September, the average sea temperature in Primorsko is 22.8°C (73°F).Note: If cold is not your friend, swimming at 22.8°C (73°F) might be daunting. But the right mix of sunshine, wind, and external temperature can make a difference. Although wetsuits are not essential, they can enhance the swimming experience.
Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in Primorsko, Bulgaria, sunrise is at 06:34 and sunset at 19:42. On the last day of the month, sunrise is at 07:05 and sunset at 18:52 EEST.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Primorsko, Bulgaria
- Average high temperature in September: 24.8°C
The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 16.7°C
The month with the highest average low temperature is August (20.2°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average rainfall in September
Primorsko, Bulgaria
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is December (82mm).
The driest month (with the least rainfall) is August (17mm).
Average sea temperature in September
Primorsko, Bulgaria
- Average sea temperature in September: 22.8°C
The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest month (with the lowest average sea temperature) is February (7.6°C).
Average daylight in September
Primorsko, Bulgaria
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).





