The climate in Karlovo during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Karlovo and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (74°F), whilst at night 10°C (51°F) is normal.
Daytime temperature | 23.6°C 74.4°F |
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Nightly temperature | 10.3°C 50.5°F |
Average temperature | 16.9°C 62.4°F |
Daily sunshine | 8.4 hrs |
Avg rainfall | 40 mm 1.6 ins |
Rainy days | 5 days |
Sea temperature | 22.8°C 73.1°F |
Humidity | 66% |
Windspeed | 6.5kph 4 mph |
On average September is the 3rd driest month of the year in Karlovo with around 40mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.4 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Karlovo in September 2025.
Best places to visit in September
Hottest month: | July | 27.3°C 81.1°F |
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Driest month: | February | 39mm 1.5ins |
Sunniest month: | August | 9.9hrs |
Coldest month: | January | 1.7°C 35.1°F |
Wettest month: | May | 78mm 3.1ins |