August weather forecast
Amherst, Guernsey

August

Weather in August

In August, Amherst, Guernsey experiences the summer crown in its full glory. Sustaining the steady warmth of July, it shares the zenith of summer. A subtle change in weather dynamics marks the differences, exemplified by a slight increase in wind gust speed to 34.3km/h (21.3mph). Despite minor variations, August weather maintains its warm and inviting ambiance. With soaring temperatures and longer days, it's the ideal time for all kinds of outdoor engagements.

Temperature

The warmest month is August, with an average high-temperature of 17.8°C (64°F) and an average low-temperature of 15.8°C (60.4°F).

Humidity

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

Rainfall

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

Snowfall

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

Daylight

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

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. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 5 during August leads to these advisories:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

What month is the hottest in Amherst?
August, characterized by an average high temperature of 17.8°C (64°F) and a low temperature of 15.8°C (60.4°F), is generally the warmest month in Amherst.
What is the usual temperature for Amherst in August?
August temperatures in Amherst, Guernsey, vary between a high-temperature of 17.8°C (64°F) and a low-temperature of 15.8°C (60.4°F).
What is the average humidity in August in Amherst?
In August, the average relative humidity is 82%.
How much does it rain in Amherst in August?
In Amherst, Guernsey, in August, during 14 rainfall days, 41mm (1.61") of precipitation is typically accumulated.
When it does not snow in Amherst?
In Amherst, snow does not fall in February through December.
How many hours of daylight does Amherst have in August?
In August, the average day length is 14h and 22min.
When are sunrise and sunset in August in Amherst?
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 many hours of sunshine does Amherst have in August?
In Amherst, the average sunshine duration in August is 9.2h.
When is the highest UV index in Amherst?
The months with the highest UV index in Amherst, Guernsey, are July through September, with an average maximum UV index of 5.
What is the UV index intensity in August in Amherst?
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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 - Amherst, Guernsey
Average temperature in August
Amherst, 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 - Amherst, Guernsey
Average pressure in August
Amherst, 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 - Amherst, Guernsey
Average wind speed in August
Amherst, 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 - Amherst, Guernsey
Average humidity in August
Amherst, 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 - Amherst, Guernsey
Average rainfall in August
Amherst, 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 - Amherst, Guernsey
Average rainfall days in August
Amherst, 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 - Amherst, Guernsey
Average snowfall in August
Amherst, 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 - Amherst, Guernsey
Average snowfall days in August
Amherst, 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 - Amherst, Guernsey
Average daylight in August /
Average sunshine in August
Amherst, 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 - Amherst, Guernsey
Average sunshine days in August
Amherst, 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 - Amherst, Guernsey
Average UV index in August
Amherst, 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 - Amherst, Guernsey
Average cloud cover in August
Amherst, 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 - Amherst, Guernsey
Average visibility in August
Amherst, 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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