August weather forecast
Guernsey, Guernsey

englishespañol中文
Share

Weather in August

August visits Guernsey as the turning point between midsummer and early autumn. Temperatures peak for the year, coasting at 17.8°C (64°F), making it the warmest month on average. The frequency of rainfall picks up, demonstrating its transitional nature. However, the added moisture doesn't deter visitors who revel in Guernsey's array of natural attractions. As the daylight begins to recede and the sun lowers in the sky, the island prepares itself for the approaching autumnal shades.

Temperature

Guernsey registers the highest average temperatures during the month of August, with peaks of 17.8°C (64°F) and lows of 15.8°C (60.4°F).

Humidity

In Guernsey, Guernsey, the average relative humidity in August is 82%.

Rainfall

In Guernsey, Guernsey, in August, during 14 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Guernsey, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.

Snowfall

In Guernsey, snow does not fall in February through December.

Daylight

The average length of the day in August is 14h and 22min.
On the first day of August in Guernsey, sunrise is at 05:42 and sunset at 20:50. On the last day of the month, sunrise is at 06:25 and sunset at 19:55 BST.

Sunshine

In August, the average sunshine is 9.2h.

UV index

July through September, with an average maximum UV index of 5, are months with the highest UV index in Guernsey, Guernsey. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.

Frequently asked questions

What time of the year is the hottest in Guernsey?

August is the month when Guernsey, Guernsey, experiences its warmest temperatures, averaging a high of 17.8°C (64°F) and a low of 15.8°C (60.4°F).

What is the temperature in August in Guernsey?

In August, in Guernsey, the average high-temperature is 17.8°C (64°F), and the average low-temperature is 15.8°C (60.4°F).

What is the average humidity in August in Guernsey?

In August, the average relative humidity in Guernsey, Guernsey, is 82%.

How much does it rain in Guernsey in August?

In August, in Guernsey, Guernsey, the rain falls for 14 days. Throughout August, 41mm (1.61") of precipitation is accumulated.

When it does not snow in Guernsey?

In Guernsey, Guernsey, snow does not fall in February through December.

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

In August, the average day length in Guernsey is 14h and 22min.

What time are sunrise and sunset in August in Guernsey?

In August, on the first day of the month, sunrise is at 05:42 and sunset at 20:50. On the last day of the month, sunrise is at 06:25 and sunset at 19:55 BST.

How many hours of sunshine does Guernsey have in August?

The average sunshine duration in August in Guernsey is 9.2h.

When is the highest UV index in Guernsey?

The months with the highest UV index in Guernsey, Guernsey, are July through September, with an average maximum UV index of 5.

How high is the UV index in August in Guernsey?

In August, the average daily maximum UV index in Guernsey is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in August
Guernsey, Guernsey

Average temperature in August - Guernsey, Guernsey
  • Average high temperature in August: 17.8°C

The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).

  • Average low temperature in August: 15.8°C

The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).

Average pressure in August
Guernsey, Guernsey

Average pressure in August - Guernsey, Guernsey
  • Average pressure in August: 1016.4mbar

The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).

Average wind speed in August
Guernsey, Guernsey

Average wind speed in August - Guernsey, Guernsey
  • Average wind speed in August: 22.8km/h

The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).

Average humidity in August
Guernsey, Guernsey

Average humidity in August - Guernsey, Guernsey
  • Average humidity in August: 82%

The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).

Average rainfall in August
Guernsey, Guernsey

Average rainfall in August - Guernsey, Guernsey
  • Average rainfall in August: 41mm

The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).

Average rainfall days in August
Guernsey, Guernsey

Average rainfall days in August - Guernsey, Guernsey
  • Average rainfall days in August: 14 days

The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).

Average snowfall in August
Guernsey, Guernsey

Average snowfall in August - Guernsey, Guernsey
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in August
Guernsey, Guernsey

Average snowfall days in August - Guernsey, Guernsey
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in August /
Average sunshine in August
Guernsey, Guernsey

Average daylight in August / Average sunshine in August - Guernsey, Guernsey
  • Average daylight in August: 14h and 2min

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).

  • Average sunshine in August: 9h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).

Average sunshine days in August
Guernsey, Guernsey

Average sunshine days in August - Guernsey, Guernsey
  • Average sunshine days in August: 12.1 days

The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).

Average UV index in August
Guernsey, Guernsey

Average UV index in August - Guernsey, Guernsey
  • Average UV index in August: 5

The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).

Average cloud cover in August
Guernsey, Guernsey

Average cloud cover in August - Guernsey, Guernsey
  • Average cloud cover in August: 40

The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in August
Guernsey, Guernsey

Average visibility in August - Guernsey, Guernsey
  • Average visibility in August: 10km

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

Guernsey, Guernsey

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location