August weather forecastL'Islet, Guernsey
August
Weather in August
In August, the air in L'Islet maintains summer warmth but hints at the forthcoming fall. The longest daylight duration of the year subsides from 15.8 hours in July to 14.4 hours. However, temperatures peak to their highest for the year at 17.8°C (64°F), before tapering downward as the month progresses. Despite summer's retreat, the season still echoes through the pleasantly warm days and cooler nights. Changing conditions elicit appreciation for the lasting vestiges of summer while promising the arrival of fall.Temperature
August stands out as L'Islet's warmest month, with temperatures ranging between an average high of 17.8°C (64°F) and a low of 15.7°C (60.3°F).Humidity
In August, the average relative humidity is 82%.Rainfall
In L'Islet, in August, it is raining for 14.3 days, with typically 41mm (1.61") of accumulated precipitation. In L'Islet, during the entire year, the rain falls for 195.6 days and collects up to 554mm (21.81") of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in August is 14h and 22min.On the first day of August in L'Islet, 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
The average sunshine in August is 9.2h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 5 suggests this advice:
Guard yourself - Avoiding sunburn is suggested. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
L'Islet, 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: 15.7°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in August
L'Islet, 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
L'Islet, 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
L'Islet, 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
L'Islet, Guernsey
- Average rainfall in August: 41mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in August
L'Islet, Guernsey
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is June (11.4 days).
Average snowfall in August
L'Islet, 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
L'Islet, 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
L'Islet, 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).
- Average sunshine in August: 9h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in August
L'Islet, Guernsey
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4.2 days).
Average UV index in August
L'Islet, 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
L'Islet, Guernsey
- Average cloud cover in August: 40
The months with the most cloud cover are January, November and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in August
L'Islet, 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).
