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SwedenThe weather in September in Sandhamn
It's cool to moderate in September in Sandhamn with an average temperature of 18°C. Temperatures this month range from a low of 16°C to a high of 20°C. At night, you can expect temperatures between 11°C and 15°C.
Looking for great weather? September is a good time to be in Sandhamn. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Sandhamn, Sweden. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 27°C in 2023, Sandhamn reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 11°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 19°C.
Rainfall amount
In September, there is an average of 46 mm of precipitation, spread over 8 days. The wind speed is around 5 Bft, mostly coming from the South.
Daily weather in September for Sandhamn
Click on any day in September to get detailed info about the usual weather on that day in Sandhamn. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Sandhamn | New York | |
|---|---|---|
| Average temperature | 18°C | 27°C |
| Max. temperature | 20°C | 31°C |
| Min. temperature | 11°C | -5°C |
| Total precipitation | 46 mm | 57 mm |
| Rainy days | 8 days | 9 days |
Start of September
The month of September starts in Sandhamn with mild temps, averaging around 20°C during the day and nights around 14°C.
Mid September
By mid-September, daytime temps drop to around 18°C, with nights around 14°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Sandhamn is around 17°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Sandhamn for all months and discover the best travel time
Curious about the weather in other parts of Sweden? Check out the climate and weather for spots like Stockholm, Småland, Malmö, or explore other destinations in Sweden.
Temperature charts
These charts show the average temperatures in September in Sandhamn, Sweden. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Sandhamn
Temperature in September in Sandhamn over the years
Precipitation charts
These charts show the average amount of precipitation in September in Sandhamn, Sweden. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Sandhamn
Total precipitation in September in Sandhamn over the years
Daily UV index in September in Sandhamn
This chart shows the average daily UV index in September in Sandhamn, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Sandhamn
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Average weather in Sandhamn by month
Click on a month below to see detailed weather info for Sandhamn. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.