September weather forecast
Arnøyhamn, Norway

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Weather in September

The first month of the autumn, September, is also a frosty month in Arnøyhamn, Norway, with an average temperature fluctuating between 8.8°C (47.8°F) and 5.3°C (41.5°F).

Temperature

As Arnøyhamn enters September, the average high-temperature subtly lowers from the a fresh 12.2°C (54°F) of August to a chilly 8.8°C (47.8°F). During the nights of September, Arnøyhamn records an average temperature of 5.3°C (41.5°F), a minor drop from daytime peaks.

Humidity

In Arnøyhamn, Norway, the average relative humidity in September is 82%.

Rainfall

In Arnøyhamn, Norway, in September, it is raining for 17.9 days, with typically 67mm (2.64") of accumulated precipitation. Throughout the year, in Arnøyhamn, there are 161.9 rainfall days, and 769mm (30.28") of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Arnøyhamn, Norway. Throughout September, in the average 1 snowfall days, it receives 27mm (1.06") of snow. In Arnøyhamn, during the entire year, snow falls for 121.3 days and aggregates up to 2376mm (93.54") of snow.

Daylight

In September, the average length of the day is 13h and 22min.
On the first day of September in Arnøyhamn, sunrise is at 04:55 and sunset at 20:19. On the last day of the month, sunrise is at 06:51 and sunset at 18:03 CEST.

Sunshine

In Arnøyhamn, Norway, the average sunshine in September is 6.9h.

UV index

In September, the average daily maximum UV index in Arnøyhamn is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, an average UV index of 2 transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Jan 27, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Arnøyhamn in September?

The high-temperature, in September, in Arnøyhamn, records 8.8°C (47.8°F), while the low-temperature is 5.3°C (41.5°F).

What is the average humidity in September in Arnøyhamn?

In September, the average relative humidity in Arnøyhamn, Norway, is 82%.

How many days does it rain in September in Arnøyhamn?

In Arnøyhamn, during September, the rain falls for 17.9 days and regularly aggregates up to 67mm (2.64") of precipitation.

When does it start to snow in Arnøyhamn?

September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 27mm (1.06") of snow.

What is the average length of the day in September in Arnøyhamn?

In Arnøyhamn, Norway, the average day length in September is 13h and 22min.

When are sunrise and sunset in September in Arnøyhamn?

On the first day of September in Arnøyhamn, sunrise is at 04:55 and sunset at 20:19. On the last day of the month, sunrise is at 06:51 and sunset at 18:03 CEST.

How long on average sun shines in September in Arnøyhamn?

The average sunshine duration in September in Arnøyhamn is 6.9h.

What is the UV index reading in September in Arnøyhamn?

In September, the average daily maximum UV index in Arnøyhamn, Norway, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Arnøyhamn, Norway

Average temperature in September - Arnøyhamn, Norway
  • Average high temperature in September: 8.8°C

The warmest month (with the highest average high temperature) is July (12.8°C).
The month with the lowest average high temperature is January (-4.8°C).

  • Average low temperature in September: 5.3°C

The month with the highest average low temperature is July (7.8°C).
The coldest month (with the lowest average low temperature) is February (-9.1°C).

Average pressure in September
Arnøyhamn, Norway

Average pressure in September - Arnøyhamn, Norway
  • Average pressure in September: 1009.2mbar

The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1001.2mbar).

Average wind speed in September
Arnøyhamn, Norway

Average wind speed in September - Arnøyhamn, Norway
  • Average wind speed in September: 13.3km/h

The windiest month (with the highest average wind speed) is January (20.4km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).

Average humidity in September
Arnøyhamn, Norway

Average humidity in September - Arnøyhamn, Norway
  • Average humidity in September: 82%

The month with the highest relative humidity is April (87%).
The months with the lowest relative humidity are July and August (80%).

Average rainfall in September
Arnøyhamn, Norway

Average rainfall in September - Arnøyhamn, Norway
  • Average rainfall in September: 67mm

The wettest month (with the highest rainfall) is March (79mm).
The driest month (with the least rainfall) is May (57mm).

Average rainfall days in September
Arnøyhamn, Norway

Average rainfall days in September - Arnøyhamn, Norway
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is February (6.4 days).

Average snowfall in September
Arnøyhamn, Norway

Average snowfall in September - Arnøyhamn, Norway
  • Average snowfall in September: 27mm

The month with the highest snowfall is March (470mm).
The months with the least snowfall are July and August (0mm).

Average snowfall days in September
Arnøyhamn, Norway

Average snowfall days in September - Arnøyhamn, Norway
  • Average snowfall days in September: 1 days

The month with the highest number of snowfall days is March (22.2 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in September / Average sunshine in September - Arnøyhamn, Norway
  • Average daylight in September: 13h and 2min

The month with the longest days is August (Average daylight: 18h and 12min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).

Average sunshine days in September
Arnøyhamn, Norway

Average sunshine days in September - Arnøyhamn, Norway
  • Average sunshine days in September: 7.6 days

The month with the most sunshine days is January (12.4 days).
The month with the least sunshine days is March (6.2 days).

Average UV index in September
Arnøyhamn, Norway

Average UV index in September - Arnøyhamn, Norway
  • Average UV index in September: 2

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are March and April (UV index 1).

Average cloud cover in September
Arnøyhamn, Norway

Average cloud cover in September - Arnøyhamn, Norway
  • Average cloud cover in September: 54

The month with the most cloud cover is March (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 53).

Average visibility in September
Arnøyhamn, Norway

Average visibility in September - Arnøyhamn, Norway
  • Average visibility in September: 9km

The months with the highest visibility are January, February, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are March, April and May (8km).

Arnøyhamn, Norway

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