August weather forecastLlansteffan, United Kingdom
August
Weather in August
August, the last month of the summer in Llansteffan, is also an enjoyable month, with an average temperature fluctuating between 13.8°C (56.8°F) and 17.4°C (63.3°F).Temperature
As Llansteffan transitions from July to August, the average high-temperatures adjust to a still refreshing 17.4°C (63.3°F), nearly the same as the previous 17.8°C (64°F). Llansteffan observes a slightly reduced average nighttime temperature of 13.8°C (56.8°F) during August.Humidity
The months with the highest humidity are January, July through October and December, with an average relative humidity of 84%.Rainfall
In Llansteffan, in August, during 15.1 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, in Llansteffan, there are 165.1 rainfall days, and 303mm (11.93") of precipitation is accumulated.Snowfall
March through November are months without snowfall.Sea temperature
August is the month with the warmest seawater, with an average sea temperature of 16.8°C (62.2°F).Note: Swimming in 16.8°C (62.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
In Llansteffan, the average length of the day in August is 14h and 35min.On the first day of August, sunrise is at 5:41 am and sunset at 9:06 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:06 pm BST.
Sunshine
The average sunshine in August is 7.5h.UV index
The months with the highest UV index in Llansteffan are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 4 during August, leads to the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Llansteffan, United Kingdom
- Average high temperature in August: 17.4°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The months with the lowest average high temperature are January and February (7.9°C).
- Average low temperature in August: 13.8°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (4.8°C).
Average pressure in August
Llansteffan, United Kingdom
- Average pressure in August: 1014.4mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in August
Llansteffan, United Kingdom
- Average wind speed in August: 18km/h
The windiest month (with the highest average wind speed) is December (25.2km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity in August
Llansteffan, United Kingdom
- Average humidity in August: 84%
The months with the highest relative humidity are January, July, August, September, October and December (84%).
The month with the lowest relative humidity is April (81%).
Average rainfall in August
Llansteffan, United Kingdom
- Average rainfall in August: 30mm
The wettest month (with the highest rainfall) is December (35mm).
The driest months (with the least rainfall) are April and May (15mm).
Average rainfall days in August
Llansteffan, United Kingdom
- Average rainfall days in August: 15.1 days
The month with the highest number of rainy days is December (17.1 days).
The month with the least rainy days is April (11.5 days).
Average snowfall in August
Llansteffan, United Kingdom
- Average snowfall in August: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in August
Llansteffan, United Kingdom
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in August
Llansteffan, United Kingdom
- Average sea temperature in August: 16.8°C
The best month for swimming (with the highest average sea temperature) is August (16.8°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).
Average daylight in August /
Average sunshine in August
Llansteffan, United Kingdom
- Average daylight in August: 14h and 36min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in August: 7h and 30min
The months with the most sunshine are April and May (Average sunshine: 8h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Llansteffan, United Kingdom
- Average sunshine days in August: 9.3 days
The month with the most sunshine days is March (15.2 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in August
Llansteffan, United Kingdom
- Average UV index in August: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in August
Llansteffan, United Kingdom
- Average cloud cover in August: 53
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in August
Llansteffan, United Kingdom
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (10km).
The months with the lowest visibility are May and July (9km).
