August weather forecast
Fort George, Guernsey

August

Weather in August

August in Fort George, Guernsey is synonymous with high summer temperatures. However, this month also notes the first signs of the impending autumn, displaying a minor dip in temperature from July. The UV index maintains its high summer value, prompting the need for sun protection measures. Despite the anticipated rainfall increase, the actual amounts do not steer significantly from July figures. The wind speed levels remain largely unchanged, suggesting calm and leisurely weather conditions.

Temperature

Temperature records in Fort George mark August as the warmest month, with highs averaging 17.8°C (64°F) and lows at 15.8°C (60.4°F).

Humidity

In August, the average relative humidity is 82%.

Rainfall

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

Snowfall

February through December are months without snowfall in Fort George.

Daylight

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

Sunshine

The average sunshine in August is 9.2h.

UV index

July through September, with an average maximum UV index of 5, are months with the highest UV index in Fort George. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 in August translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

What is the hottest time of year in Fort George?
August stands out as Fort George's warmest month, with temperatures ranging between an average high of 17.8°C (64°F) and a low of 15.8°C (60.4°F).
What is the usual temperature for Fort George in August?
In Fort George, 17.8°C (64°F) is the average high-temperature and 15.8°C (60.4°F) is the average low-temperature during August.
What is the average humidity in August in Fort George?
In August, the average relative humidity in Fort George is 82%.
How many days does it rain in August in Fort George?
In Fort George, Guernsey, in August, during 14 rainfall days, 41mm (1.61") of precipitation is typically accumulated.
When it does not snow in Fort George?
February through December are months without snowfall in Fort George, Guernsey.
What is the average length of the day in August in Fort George?
The average day length in August in Fort George, Guernsey, is 14h and 22min.
When is the sunrise / sunset in August in Fort George?
On the first day of August, 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 long on average sun shines in August in Fort George?
The average sunshine duration in August is 9.2h.
When is the highest UV index in Fort George?
July through September, with an average maximum UV index of 5, are months with the highest UV index in Fort George, Guernsey.
How high is the UV index in August in Fort George?
In Fort George, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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 - Fort George, Guernsey
Average temperature in August
Fort George, 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 - Fort George, Guernsey
Average pressure in August
Fort George, 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 - Fort George, Guernsey
Average wind speed in August
Fort George, 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 - Fort George, Guernsey
Average humidity in August
Fort George, 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 - Fort George, Guernsey
Average rainfall in August
Fort George, 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 - Fort George, Guernsey
Average rainfall days in August
Fort George, 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 - Fort George, Guernsey
Average snowfall in August
Fort George, 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 - Fort George, Guernsey
Average snowfall days in August
Fort George, 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 - Fort George, Guernsey
Average daylight in August /
Average sunshine in August
Fort George, 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 - Fort George, Guernsey
Average sunshine days in August
Fort George, 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 - Fort George, Guernsey
Average UV index in August
Fort George, 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 - Fort George, Guernsey
Average cloud cover in August
Fort George, 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 - Fort George, Guernsey
Average visibility in August
Fort George, 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).

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