August weather forecast
Selfoss, Iceland

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Weather in August

August sees a slight decline in temperatures in Selfoss from July, but the weather remains fairly warm. While daylight hours slightly decrease, they still make up for a substantial part of the day offering ample time for exploration. Slight rises in rainfall and wind speed are observed, yet they do not detract from the overall comfortable and enjoyable weather. Despite the minor changes, August remains a very popular time for visiting Selfoss. As the summer gradually recedes, it makes way for the upcoming autumn season.

Temperature

August's average high-temperature is a still moderate 13.1°C (55.6°F), maintaining a close comparison with July's 13.8°C (56.8°F). The nights of August are characterized by an average low-temperature of 8.2°C (46.8°F), subtly descending from daytime highs.

Humidity

In August, the average relative humidity in Selfoss is 79%.

Rainfall

In Selfoss, in August, it is raining for 17.1 days, with typically 77mm (3.03") of accumulated precipitation. In Selfoss, during the entire year, the rain falls for 208.7 days and collects up to 1105mm (43.5") of precipitation.

Snowfall

June through September are months without snowfall in Selfoss, Iceland.

Daylight

In August, the average length of the day in Selfoss, Iceland, is 16h and 16min.
On the first day of the month, sunrise is at 04:35 and sunset at 22:25. On the last day of August, in Selfoss, Iceland, sunrise is at 06:06 and sunset at 20:42 GMT.

Sunshine

August has the most sunshine of the year in Selfoss, with an average of 7.8h of sunshine.

UV index

The average daily maximum UV index in August in Selfoss is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: In August, the average maximum UV index of 3 translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the usual temperature for Selfoss in August?

Selfoss in August has an average high-temperature of 13.1°C (55.6°F) and an average low-temperature of 8.2°C (46.8°F).

What is the average humidity in August in Selfoss?

In Selfoss, Iceland, the average relative humidity in August is 79%.

How many days does it rain in August in Selfoss?

In Selfoss, Iceland, in August, during 17.1 rainfall days, 77mm (3.03") of precipitation is typically accumulated.

When it does not snow in Selfoss?

In Selfoss, Iceland, snow does not fall in June through September.

What is the average length of the day in August in Selfoss?

In August, the average day length in Selfoss, Iceland, is 16h and 16min.

What time are sunrise and sunset in August in Selfoss?

In August, on the first day of the month, sunrise is at 04:35 and sunset at 22:25. On the last day of the month, in Selfoss, sunrise is at 06:06 and sunset at 20:42 GMT.

What month has the most sunshine in Selfoss?

The month with the most sunshine in Selfoss is August, with an average of 7.8h of sunshine.

How many hours of sunshine does Selfoss have in August?

In August, the average sunshine duration is 7.8h.

What is the UV index reading in August in Selfoss?

The average daily maximum UV index in August in Selfoss is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Selfoss, Iceland

Average temperature in August - Selfoss, Iceland
  • Average high temperature in August: 13.1°C

The warmest month (with the highest average high temperature) is July (13.8°C).
The month with the lowest average high temperature is December (1.5°C).

  • Average low temperature in August: 8.2°C

The month with the highest average low temperature is July (8.9°C).
The coldest month (with the lowest average low temperature) is December (-1.9°C).

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Average pressure in August
Selfoss, Iceland

Average pressure in August - Selfoss, Iceland
  • Average pressure in August: 1007.6mbar

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

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Average wind speed in August
Selfoss, Iceland

Average wind speed in August - Selfoss, Iceland
  • Average wind speed in August: 15.9km/h

The windiest month (with the highest average wind speed) is February (24.8km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).

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Average humidity in August
Selfoss, Iceland

Average humidity in August - Selfoss, Iceland
  • Average humidity in August: 79%

The months with the highest relative humidity are January and September (82%).
The month with the lowest relative humidity is May (74%).

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Average rainfall in August
Selfoss, Iceland

Average rainfall in August - Selfoss, Iceland
  • Average rainfall in August: 77mm

The wettest month (with the highest rainfall) is January (142mm).
The driest month (with the least rainfall) is June (45mm).

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Average rainfall days in August
Selfoss, Iceland

Average rainfall days in August - Selfoss, Iceland
  • Average rainfall days in August: 17.1 days

The month with the highest number of rainy days is April (19.9 days).
The month with the least rainy days is December (14.3 days).

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Average snowfall in August
Selfoss, Iceland

Average snowfall in August - Selfoss, Iceland
  • Average snowfall in August: 0mm

The month with the highest snowfall is March (220mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in August
Selfoss, Iceland

Average snowfall days in August - Selfoss, Iceland
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Selfoss, Iceland

Average daylight in August / Average sunshine in August - Selfoss, Iceland
  • Average daylight in August: 16h and 2min

The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).

  • Average sunshine in August: 7h and 5min

The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

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Average sunshine days in August
Selfoss, Iceland

Average sunshine days in August - Selfoss, Iceland
  • Average sunshine days in August: 11.6 days

The month with the most sunshine days is June (12.3 days).
The month with the least sunshine days is January (5.5 days).

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Average UV index in August
Selfoss, Iceland

Average UV index in August - Selfoss, Iceland
  • Average UV index in August: 3

The month with the highest UV index is July (UV index 4).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in August
Selfoss, Iceland

Average cloud cover in August - Selfoss, Iceland
  • Average cloud cover in August: 59

The month with the most cloud cover is March (Cloud cover 67).
The months with the least cloud cover are May and August (Cloud cover 59).

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Average visibility in August
Selfoss, Iceland

Average visibility in August - Selfoss, Iceland
  • Average visibility in August: 9km

The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).

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Selfoss, Iceland

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