Nynäshamn Weather in September

In Nynäshamn, September brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 11°C (52°F). Expect quite a bit of rainfall this month.

Rainfall in Nynäshamn in September

On average, there are about 14 days with rain during this month, averaging 60 mm (2.4 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Nynäshamn in September

In September, expect moderate temperatures in Nynäshamn, with highs of 17°C (63°F) and lows of 11°C (52°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Nynäshamn in September

You can expect a moderate amount of sunlight, with approximately 171 hours. This means a pleasant mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Nynäshamn.