October weather forecast
Keldur, Iceland

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Weather in October

October, like September, is another chilly autumn month in Keldur, Iceland, with an average temperature ranging between max 8.2°C (46.8°F) and min 5.9°C (42.6°F).

Temperature

The commencement of October notes an average high-temperature of a chilly 8.2°C (46.8°F), exhibiting little difference from the previous month. Keldur's nocturnal October readings average at a cold 5.9°C (42.6°F), showing little variation from the daytime temperatures.

Humidity

In October, the average relative humidity in Keldur is 77%.

Rainfall

In Keldur, Iceland, during October, the rain falls for 20.9 days and regularly aggregates up to 123mm (4.84") of precipitation. Throughout the year, there are 215.2 rainfall days, and 1116mm (43.94") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Keldur, there are 32.4 snowfall days, and 397mm (15.63") of snow is accumulated.

Daylight

In October, the average length of the day in Keldur is 9h and 46min.
On the first day of the month, sunrise is at 07:30 and sunset at 18:48. On the last day of October, in Keldur, sunrise is at 09:00 and sunset at 17:07 GMT.

Sunshine

The average sunshine in October is 4.7h.

UV index

The months with the lowest UV index in Keldur are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 2 during October translates into the following guidance:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Feb 10, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are the temperatures in Keldur in October?

The high-temperature, in October, in Keldur, records 8.2°C (46.8°F), while the low-temperature is 5.9°C (42.6°F).

What is the average humidity in October in Keldur?

The average relative humidity in October in Keldur, Iceland, is 77%.

How much does it rain in Keldur in October?

In Keldur, Iceland, during October, the rain falls for 20.9 days and regularly aggregates up to 123mm (4.84") of precipitation.

When does it start snowing in Keldur?

October is the first month it typically snows in Keldur, Iceland. Throughout October, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow.

What is the average length of the day in October in Keldur?

In October, the average day length is 9h and 46min.

When is the sunrise / sunset in October in Keldur?

In October, on the first day of the month, sunrise is at 07:30 and sunset at 18:48. On the last day of the month, in Keldur, Iceland, sunrise is at 09:00 and sunset at 17:07 GMT.

How many hours of sunshine does Keldur have in October?

The average sunshine duration in October in Keldur, Iceland, is 4.7h.

When is the lowest UV index in Keldur?

The months with the lowest UV index in Keldur are January through April, October through December, with an average maximum UV index of 2.

What is the UV index intensity in October in Keldur?

The average daily maximum UV index in October in Keldur, Iceland, is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe 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 October
Keldur, Iceland

Average temperature in October - Keldur, Iceland
  • Average high temperature in October: 8.2°C

The warmest months (with the highest average high temperature) are July and August (12.3°C).
The month with the lowest average high temperature is December (4.5°C).

  • Average low temperature in October: 5.9°C

The months with the highest average low temperature are July and August (9.7°C).
The coldest months (with the lowest average low temperature) are March and December (1.9°C).

Average pressure in October
Keldur, Iceland

Average pressure in October - Keldur, Iceland
  • Average pressure in October: 1003.5mbar

The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).

Average wind speed in October
Keldur, Iceland

Average wind speed in October - Keldur, Iceland
  • Average wind speed in October: 29.8km/h

The windiest month (with the highest average wind speed) is February (34.7km/h).
The calmest month (with the lowest average wind speed) is July (19.5km/h).

Average humidity in October
Keldur, Iceland

Average humidity in October - Keldur, Iceland
  • Average humidity in October: 77%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is December (73%).

Average rainfall in October
Keldur, Iceland

Average rainfall in October - Keldur, Iceland
  • Average rainfall in October: 123mm

The wettest month (with the highest rainfall) is January (130mm).
The driest month (with the least rainfall) is June (48mm).

Average rainfall days in October
Keldur, Iceland

Average rainfall days in October - Keldur, Iceland
  • Average rainfall days in October: 20.9 days

The month with the highest number of rainy days is September (21.5 days).
The month with the least rainy days is June (15 days).

Average snowfall in October
Keldur, Iceland

Average snowfall in October - Keldur, Iceland
  • Average snowfall in October: 3mm

The month with the highest snowfall is March (115mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in October
Keldur, Iceland

Average snowfall days in October - Keldur, Iceland
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is March (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Keldur, Iceland

Average daylight in October / Average sunshine in October - Keldur, Iceland
  • Average daylight in October: 9h and 5min

The month with the longest days is June (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 4h and 36min).

  • Average sunshine in October: 4h and 4min

The months with the most sunshine are May, June and July (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in October
Keldur, Iceland

Average sunshine days in October - Keldur, Iceland
  • Average sunshine days in October: 8.2 days

The month with the most sunshine days is June (12.8 days).
The month with the least sunshine days is March (5.8 days).

Average UV index in October
Keldur, Iceland

Average UV index in October - Keldur, Iceland
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in October
Keldur, Iceland

Average cloud cover in October - Keldur, Iceland
  • Average cloud cover in October: 59

The month with the most cloud cover is March (Cloud cover 65).
The months with the least cloud cover are May and August (Cloud cover 55).

Average visibility in October
Keldur, Iceland

Average visibility in October - Keldur, Iceland
  • Average visibility in October: 9km

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

Keldur, Iceland

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