Average weather in Warsaw in September
Poland is a central-eastern European country with a continental climate and four seasons: winter, autumn, spring and summer. The ASAIHL Conference will take place at the beginning of autumn in Poland. Visitors to Warsaw can generally expect moderate temperatures in September, ranging from around 19°C (65°F) daytime temperature to the minimum nighttime temperature around 9°C (48°F) and a moderate rainfall. The wind is moderate as well.

How to prepare for the weather in Warsaw in September?
It is advised to take an umbrella, a light to medium jacket and clothes for the moderate weather when visiting Warsw in September. It might be also likely that exceptionally the temperature will be above 19°C (65°F) or below 9°C (48°F), therefore a piece of clothing for unusual weather condition might also be necessary.

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