September weather forecast
Borgarnes, Iceland

Weather in September

The first month of the autumn, September, is also a frosty month in Borgarnes, Iceland, with an average temperature fluctuating between 6.2°C (43.2°F) and 9.6°C (49.3°F).

Temperature

In September, the average high-temperature marginally drops from a cool 12.8°C (55°F) in August to a frosty 9.6°C (49.3°F). In September, in Borgarnes, Iceland, the average low-temperature is 6.2°C (43.2°F).

Humidity

January, February and September, with an average relative humidity of 82%, are the most humid months in Borgarnes.

Rainfall

In Borgarnes, it is raining for 17.8 days, with typically 40mm (1.57") of accumulated precipitation. Throughout the year, there are 166.2 rainfall days, and 416mm (16.38") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Sea temperature

In Borgarnes, the average seawater temperature in September is 9.2°C (48.6°F).
Note: Swimming in 9.2°C (48.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in September is 13h and 2min.
On the first day of the month, sunrise is at 06:09 and sunset at 20:46. On the last day of September, in Borgarnes, sunrise is at 07:34 and sunset at 19:00 GMT.

Sunshine

In September, the average sunshine in Borgarnes is 4.5h.

UV index

The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in September interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the most humid month in Borgarnes?

The months with the highest humidity are January, February and September, with an average relative humidity of 82%.

What is the average humidity in September in Borgarnes?

The average relative humidity in September in Borgarnes is 82%.

How much does it rain in Borgarnes in September?

In September, in Borgarnes, Iceland, the rain falls for 17.8 days. Throughout September, 40mm (1.57") of precipitation is accumulated.

When it does not snow in Borgarnes?

June through September are months without snowfall in Borgarnes.

Does it snow in Borgarnes in September?

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

What is the water temperature in September in Borgarnes?

In September, the average sea temperature in Borgarnes is 9.2°C (48.6°F). Swimming in 9.2°C (48.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Borgarnes have in September?

The average day length in September is 13h and 2min.

What time are sunrise and sunset in September in Borgarnes?

On the first day of September in Borgarnes, Iceland, sunrise is at 06:09 and sunset at 20:46. On the last day of the month, sunrise is at 07:34 and sunset at 19:00 GMT.

How long on average sun shines in September in Borgarnes?

The average sunshine duration in September in Borgarnes is 4.5h.

How high is the UV index in September in Borgarnes?

In September, the average daily maximum UV index in Borgarnes is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Borgarnes, Iceland

Average temperature in September - Borgarnes, Iceland
  • Average high temperature in September: 9.6°C

The warmest month (with the highest average high temperature) is July (13.5°C).
The month with the lowest average high temperature is December (1.3°C).

  • Average low temperature in September: 6.2°C

The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-2.4°C).

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Average pressure in September
Borgarnes, Iceland

Average pressure in September - Borgarnes, Iceland
  • Average pressure in September: 1002.9mbar

The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.6mbar).

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Average wind speed in September
Borgarnes, Iceland

Average wind speed in September - Borgarnes, Iceland
  • Average wind speed in September: 20.4km/h

The windiest month (with the highest average wind speed) is February (24.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).

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Average humidity in September
Borgarnes, Iceland

Average humidity in September - Borgarnes, Iceland
  • Average humidity in September: 82%

The months with the highest relative humidity are January, February and September (82%).
The month with the lowest relative humidity is May (75%).

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Average rainfall in September
Borgarnes, Iceland

Average rainfall in September - Borgarnes, Iceland
  • Average rainfall in September: 40mm

The wettest month (with the highest rainfall) is January (47mm).
The driest months (with the least rainfall) are June and July (25mm).

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Average rainfall days in September
Borgarnes, Iceland

Average rainfall days in September - Borgarnes, Iceland
  • Average rainfall days in September: 17.8 days

The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is December (9.7 days).

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Average snowfall in September
Borgarnes, Iceland

Average snowfall in September - Borgarnes, Iceland
  • Average snowfall in September: 0mm

The month with the highest snowfall is March (100mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Borgarnes, Iceland

Average snowfall days in September - Borgarnes, Iceland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is March (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Borgarnes, Iceland

Average sea temperature in September - Borgarnes, Iceland
  • Average sea temperature in September: 9.2°C

The best month for swimming (with the highest average sea temperature) is August (10.8°C).
The coldest month (with the lowest average sea temperature) is March (4.1°C).

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Average daylight in September /
Average sunshine in September
Borgarnes, Iceland

Average daylight in September / Average sunshine in September - Borgarnes, Iceland
  • Average daylight in September: 13h and 2min

The month with the longest days is June (Average daylight: 21h and 13min).
The month with the shortest days is December (Average daylight: 4h and 9min).

  • Average sunshine in September: 4h and 30min

The month with the most sunshine is August (Average sunshine: 7h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

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Average sunshine days in September
Borgarnes, Iceland

Average sunshine days in September - Borgarnes, Iceland
  • Average sunshine days in September: 8.8 days

The month with the most sunshine days is December (14.1 days).
The month with the least sunshine days is September (8.8 days).

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Average UV index in September
Borgarnes, Iceland

Average UV index in September - Borgarnes, Iceland
  • 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 January, February and November (UV index 1).

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Average cloud cover in September
Borgarnes, Iceland

Average cloud cover in September - Borgarnes, Iceland
  • Average cloud cover in September: 65

The months with the most cloud cover are March and April (Cloud cover 68).
The months with the least cloud cover are August and December (Cloud cover 60).

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Average visibility in September
Borgarnes, Iceland

Average visibility in September - Borgarnes, Iceland
  • Average visibility in September: 9km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).

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