Weather in August
Temperature
August records an average high-temperature of a still enjoyable 18.5°C (65.3°F), indicating a minor variation from the preceding month. An average low-temperature of 11.4°C (52.5°F) marks the month of August.Rainfall
In Londonderry, in August, during 13 rainfall days, 75mm (2.95") of precipitation is typically accumulated. In Londonderry, during the entire year, the rain falls for 170 days and collects up to 853mm (33.58") of precipitation.Sea temperature
August is the month with the warmest seawater in Londonderry, United Kingdom, with an average sea temperature of 14.7°C (58.5°F).Note: Immersing oneself in 14.7°C (58.5°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In August, the average length of the day in Londonderry is 14h and 55min.On the first day of August, sunrise is at 5:39 am and sunset at 9:31 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:23 pm BST.
Sunshine
In August, the average sunshine in Londonderry is 4.6h.UV index
In Londonderry, United Kingdom, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the UV index of 5 transforms into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are the temperatures in Londonderry in August?
How many days does it rain in August in Londonderry?
What is the month with the warmest sea water in Londonderry?
What is the sea water temperature in August in Londonderry?
What is the average length of the day in August in Londonderry?
When is the sunrise / sunset in August in Londonderry?
How long on average sun shines in August in Londonderry?
What is the UV index intensity in August in Londonderry?
Average temperature in August
Londonderry, United Kingdom
- Average high temperature in August: 18.5°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The months with the lowest average high temperature are January and December (8°C).
- Average low temperature in August: 11.4°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).
Average rainfall in August
Londonderry, United Kingdom
- Average rainfall in August: 75.3mm
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is May (51.2mm).
Average rainfall days in August
Londonderry, United Kingdom
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is November (19 days).
The month with the least rainy days is June (11 days).
Average sea temperature in August
Londonderry, United Kingdom
- Average sea temperature in August: 14.7°C
The best month for swimming (with the highest average sea temperature) is August (14.7°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in August /
Average sunshine in August
Londonderry, United Kingdom
- Average daylight in August: 14h and 5min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in August: 4h and 4min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average UV index in August
Londonderry, United Kingdom
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
Londonderry, United Kingdom
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