August weather forecastBorgarnes, Iceland
August
Weather in August
The onset of August carries the last vestiges of summer warmth in Borgarnes, with temperatures slightly decreasing from their July peak. The city continues to relish long daylight periods, soaking up the sun's warmth and energy. It is the period when the locals, making the most out of the remaining summer, participate in various outdoor activities. The usually mild Icelandic summer slowly starts to wane as summer days shorten. Even though the weather remains pleasant, signs of the approaching autumn start to become increasingly apparent towards the end of the month.Temperature
The ushering in of August in Borgarnes, Iceland, brings an average high-temperature of a cool 12.8°C (55°F), closely mirroring the 13.5°C (56.3°F) of July. Borgarnes marks an average drop to a chilly 8.4°C (47.1°F) during nighttime in August, following the high of the day.Humidity
In Borgarnes, the average relative humidity in August is 79%.Rainfall
In August, the rain falls for 14.8 days. Throughout August, 37mm (1.46") of precipitation is accumulated. In Borgarnes, 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.Sea temperature
August is the month with the warmest seawater, with an average sea temperature of 10.8°C (51.4°F).Note: Staying in 10.8°C (51.4°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
The average length of the day in August in Borgarnes is 16h and 25min.On the first day of the month, sunrise is at 04:32 and sunset at 22:35. On the last day of August, sunrise is at 06:07 and sunset at 20:47 GMT.
Sunshine
The month with the most sunshine in Borgarnes is August, with an average of 7.4h of sunshine.UV index
In Borgarnes, the average daily maximum UV index in August is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 3 in August translates into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, Iceland
- Average sea temperature in August: 10.8°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).
Average daylight in August /
Average sunshine in August
Borgarnes, Iceland
- Average daylight in August: 16h and 24min
The month with the longest days is June (Average daylight: 21h and 12min).
The month with the shortest days is December (Average daylight: 4h and 12min).
- 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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
Borgarnes, 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).








