The weather in September in Finnøy

It's cool to moderate in September in Finnøy with an average temperature of 17°C. Temperatures this month range from a low of 15°C to a high of 19°C. At night, you can expect temperatures between 10°C and 13°C.

Looking for sun and warm weather? September isn’t a good month to be in Finnøy. The temperatures are too low for a warm stay this month.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Finnøy, Norway. 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 26°C in 2016, Finnøy reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 9°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 17°C.

Rainfall amount

In September, there is an average of 147 mm of precipitation, spread over 17 days. The wind speed is around 4 Bft, mostly coming from the South.

Daily weather in September for Finnøy

Click on any day in September to get detailed info about the usual weather on that day in Finnøy. Check out the historical temperatures and precipitation over the past 10 years on this day.

September weather comparison

  Finnøy New York
Average temperature 17°C 27°C
Max. temperature 19°C 31°C
Min. temperature 10°C -5°C
Total precipitation 147 mm 57 mm
Rainy days 17 days 9 days

Start of September

The month of September starts in Finnøy with mild temps, averaging around 18°C during the day and nights around 12°C.

Mid September

By mid-September, daytime temps drop to around 17°C, with nights around 12°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of September

By the end of September, the average daytime temperature in Finnøy is around 16°C, while nighttime temps are about 11°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.

UV index

The UV index is a maximum of 5 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 Finnøy for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in September in Finnøy, Norway. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in September in Finnøy

Temperature in September in Finnøy over the years

Precipitation charts

These charts show the average amount of precipitation in September in Finnøy, Norway. 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 Finnøy

Total precipitation in September in Finnøy over the years

Daily UV index in September in Finnøy

This chart shows the average daily UV index in September in Finnøy, 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 Finnøy

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Average weather in Finnøy by month

Click on a month below to see detailed weather info for Finnøy. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.