August weather forecastAlderney, Guernsey

August

Weather in August

August in Alderney perseveres with the trend of comfortable summer weather. There are still long stretch of hours under the sun, claiming a substantial 14.4 daylight hours on average. Sea conditions remain inviting, with temperatures hovering around 17.2°C (63°F). August stands out as a slightly milder alternative to July, allowing for enjoyable summer outdoor activities without the intensity of peak summer heat.

Sea temperature

In Alderney, the average seawater temperature in August is 17.2°C (63°F).
Note: For most people, a water temperature of 17.2°C (63°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).

Daylight

In Alderney, the average length of the day in August is 14h and 23min.
On the first day of the month, sunrise is at 05:40 and sunset at 20:50. On the last day of August, sunrise is at 06:23 and sunset at 19:54 BST.

Frequently asked questions

In August, the average sea temperature is 17.2°C (63°F). Swimming in 17.2°C (63°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

The average day length in August is 14h and 23min.

In August, on the first day of the month, sunrise is at 05:40 and sunset at 20:50. On the last day of the month, sunrise is at 06:23 and sunset at 19:54 BST.

Average sea temperature in August
Alderney, Guernsey

  • Average sea temperature in August: 17.2°C

The best month for swimming (with the highest average sea temperature) is September (17.4°C).
The coldest month (with the lowest average sea temperature) is March (9.3°C).

Average daylight in August
Alderney, Guernsey

  • Average daylight in August: 14h and 24min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).