September weather forecastStø, Norway

September

Weather in September

September, the first month of the autumn in Stø, is also a fresh month, with an average temperature ranging between max 11.2°C (52.2°F) and min 9°C (48.2°F).

Temperature

September's advent presents an average high-temperature of a still cool 11.2°C (52.2°F), indicating a slight variation from the conditions of the previous month. In Stø, the month of September brings a consistent average low-temperature of 9°C (48.2°F), slightly cooler than its daytime highs.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Stø, during September, the rain falls for 17.6 days and regularly aggregates up to 58mm (2.28") of precipitation. In Stø, during the entire year, the rain falls for 160.4 days and collects up to 572mm (22.52") of precipitation.

Snowfall

In Stø, snow does not fall in June through September.

Daylight

The average length of the day in September is 13h and 17min.
On the first day of September, sunrise is at 05:22 and sunset at 20:35. On the last day of the month, sunrise is at 07:12 and sunset at 18:26 CEST.

Sunshine

In Stø, the average sunshine in September is 6h.

UV index

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In September, a regular UV index of 3 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Updated: Jun 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Stø experiences an average high-temperature of 11.2°C (52.2°F) and a low-temperature of 9°C (48.2°F).

The average relative humidity in September is 79%.

In Stø, in September, during 17.6 rainfall days, 58mm (2.28") of precipitation is typically accumulated.

In Stø, snow does not fall in June through September.

In Stø, in September, it doesn't snow. In October, it regularly snows.

The average day length in September is 13h and 17min.

In September, on the first day of the month, sunrise is at 05:22 and sunset at 20:35. On the last day of the month, sunrise is at 07:12 and sunset at 18:26 CEST.

The average sunshine duration in September is 6h.

In Stø, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

12.5°C

11.2°C

7.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

20.2km/h

22.8km/h

26km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

12.7

10.8

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Stø, Norway

Average high temperature in September: 11.2°C

The warmest month (with the highest average high temperature) is August (12.5°C).
The months with the lowest average high temperature are February and March (1.8°C).

Average low temperature in September: 9°C

The month with the highest average low temperature is August (10.4°C).
The coldest month (with the lowest average low temperature) is February (-0.8°C).

Average pressure in September
Stø, Norway

Average pressure in September: 1008.2mbar

The month with the highest atmospheric pressure is May (1013.7mbar).
The month with the lowest atmospheric pressure is December (1000mbar).

Average wind speed in September
Stø, Norway

Average wind speed in September: 21.1km/h

The windiest month (with the highest average wind speed) is March (29.1km/h).
The calmest month (with the lowest average wind speed) is July (18km/h).

Average humidity in September
Stø, Norway

Average humidity in September: 79%

The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are January, March and December (72%).

Average rainfall in September
Stø, Norway

Average rainfall in September: 58mm

The wettest month (with the highest rainfall) is March (60mm).
The driest month (with the least rainfall) is June (30mm).

Average rainfall days in September
Stø, Norway

Average rainfall days in September: 17.6 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is February (7 days).

Average snowfall in September
Stø, Norway

Average snowfall in September: 0mm

The month with the highest snowfall is March (114mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Stø, Norway

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Stø, Norway

Average daylight in September: 13h and 18min

The month with the longest days is August (Average daylight: 17h and 42min).
The month with the shortest days is June (Average daylight: 0h and 0min).

Average sunshine in September: 6h and 0min

The month with the most sunshine is August (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 0h and 18min).