August weather forecastAlftanes, Iceland

August

Weather in August

The weather in August sees a minor regression compared to July. The average temperature fall from 13.5°C (56.3°F) to 12.8°C (55°F), signifying the beginning of the retreat of summer. The long daylight hours slowly recede, hinting at the incoming transition to autumn. The extended sunshine and a warm sea make a pleasant environment for visitors to enjoy nature.

Temperature

July's transformation into August witnesses an average high-temperature of a fresh 12.8°C (55°F) in Alftanes, noting a minor change from the preceding month. Alftanes's nighttime average temperature in August drops marginally from the daytime highs, settling at a frosty 8.4°C (47.1°F).

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Alftanes, Iceland, in August, during 14.8 rainfall days, 37mm (1.46") of precipitation is typically accumulated. In Alftanes, during the entire year, the rain falls for 166.2 days and collects up to 416mm (16.38") of precipitation.

Snowfall

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

Sea temperature

The months with the warmest seawater in Alftanes are July and August, with an average sea temperature of 11.3°C (52.3°F).
Note: Dipping into 11.3°C (52.3°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 13°C (55.4°F) feels cold to the bone.

Daylight

In Alftanes, Iceland, the average length of the day in August is 16h and 19min.
On the first day of August, sunrise is at 04:37 and sunset at 22:31. On the last day of the month, sunrise is at 06:09 and sunset at 20:46 GMT.

Sunshine

August has the most sunshine of the year, with an average of 7.4h of sunshine.

UV index

In Alftanes, Iceland, the average daily maximum UV index in August is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 3 translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In August, the average high-temperature and low-temperature in Alftanes, Iceland, are 12.8°C (55°F) and 8.4°C (47.1°F) respectively.

In August, the average relative humidity is 79%.

In Alftanes, Iceland, in August, during 14.8 rainfall days, 37mm (1.46") of precipitation is typically accumulated.

June through September are months without snowfall.

July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Alftanes, Iceland.

In August, the average sea temperature in Alftanes, Iceland, is 11.3°C (52.3°F). Swimming in 11.3°C (52.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

In August, the average day length in Alftanes is 16h and 19min.

On the first day of August in Alftanes, sunrise is at 04:37 and sunset at 22:31. On the last day of the month, sunrise is at 06:09 and sunset at 20:46 GMT.

August has the most sunshine of the year in Alftanes, with an average of 7.4h of sunshine.

In August, the average sunshine duration in Alftanes, Iceland, is 7.4h.

In Alftanes, the average daily maximum UV index in August is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J August S O N D

Jul

August

Sep

Average high temperature

13.5°C

12.8°C

9.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.9km/h

17.1km/h

21.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.2

12.8

8.8

Average UV index

Average cloud cover

Average visibility

Average temperature in August
Alftanes, Iceland

Average high temperature in August: 12.8°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 August: 8.4°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).

Average pressure in August
Alftanes, Iceland

Average pressure in August: 1007.7mbar

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

Average wind speed in August
Alftanes, Iceland

Average wind speed in August: 16km/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).

Average humidity in August
Alftanes, Iceland

Average humidity in August: 79%

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

Average rainfall in August
Alftanes, Iceland

Average rainfall in August: 37mm

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

Average rainfall days in August
Alftanes, Iceland

Average rainfall days in August: 14.8 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).

Average snowfall in August
Alftanes, Iceland

Average snowfall in August: 0mm

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

Average snowfall days in August
Alftanes, Iceland

Average snowfall days in August: 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).

Average sea temperature in August
Alftanes, Iceland

Average sea temperature in August: 11.3°C

The best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).

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

Average daylight in August: 16h and 18min

The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 24min).

Average sunshine in August: 7h and 24min

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).

Average sunshine days in August
Alftanes, Iceland

Average sunshine days in August: 12.8 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).

Average UV index in August
Alftanes, Iceland

Average UV index in August: 3

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).

Average cloud cover in August
Alftanes, Iceland

Average cloud cover in August: 60

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).

Average visibility in August
Alftanes, Iceland

Average visibility in August: 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).