nomadseason

September Weather in Nynaeshamn, Sweden

Last updated: August 27, 2025

In September, the average temperature in Nynaeshamn, Sweden is a comfortable 13°C (57°F). Daily temperatures can range from a cool 4°C (39°F) to a pleasant 23°C (73°F). Expect about 57 mm (2.2 in) of rainfall over 10 days, and with an average humidity of 85%, it's wise to prepare for a bit of stickiness.

September Temperature in Nynaeshamn

In September in Nynaeshamn, the average temperature is 13°C (57°F). The maximum can reach 23°C (73°F), and the minimum can be as low as 4°C (39°F). This variation in temperatures makes it essential to pack layers for your travels to ensure comfort during your stay.

September Weather in Nynaeshamn: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Nynaeshamn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nynaeshamn, September typically has an average temperature of 13°C (57°F), with highs reaching up to 23°C (73°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec343235404859646356484236
Data source: Temperature data for Nynaeshamn generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Nynaeshamn

In Nynaeshamn in September, the precipitation amount is 57 mm (2.2 in) over a span of 10 days.

September Precipitation Trends in Nynaeshamn

The chart displays monthly precipitation patterns in Nynaeshamn, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Nynaeshamn, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec484046255041516257815874
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Nynaeshamn

In Nynaeshamn in September, humidity is 85%. With an average temperature of 13°C (57°F), this humidity feels like a heavy embrace, making traveling feel sticky and uncomfortable, as sweat clings to your skin and the air hangs thick and warm, limiting your energy and enthusiasm for exploration.

September Average Humidity in Nynaeshamn

This chart illustrates the average monthly humidity levels in Nynaeshamn, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Nynaeshamn is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%89%85%77%76%74%77%85%89%90%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nynaeshamn

In Nynaeshamn in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Nynaeshamn for better planning.

Maximum UV Index Levels in Nynaeshamn for September

The chart shows the monthly maximum UV Index (UVI) for Nynaeshamn in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Nynaeshamn typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Nynaeshamn September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Nynaeshamn Compares to Other Months

Weather in Nynaeshamn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nynaeshamn, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Nynaeshamn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)48 mm (1.9 inches)90%low
February Weather0°C (33°F)40 mm (1.6 inches)88%low
March Weather2°C (36°F)46 mm (1.8 inches)89%moderate
April Weather5°C (41°F)25 mm (1.0 inches)85%moderate
May Weather9°C (49°F)50 mm (2.0 inches)77%moderate
June Weather15°C (60°F)41 mm (1.6 inches)76%high
July Weather18°C (64°F)51 mm (2.0 inches)74%high
August Weather17°C (63°F)62 mm (2.4 inches)77%moderate
September Weather13°C (57°F)57 mm (2.2 inches)85%moderate
October Weather9°C (48°F)81 mm (3.2 inches)89%low
November Weather5°C (42°F)58 mm (2.3 inches)90%low
December Weather2°C (36°F)74 mm (2.9 inches)87%low

Compare Nynaeshamn's Climate with Cities Worldwide