Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
July
Weather in July
Temperature
July is the warmest month, exhibiting average temperatures of 17.5°C (63.5°F) at the peak and 10.2°C (50.4°F) at the base.Humidity
In Gretna, the average relative humidity in July is 86%.Rainfall
In Gretna, in July, during 19.4 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, there are 204.6 rainfall days, and 478mm (18.82") of precipitation is accumulated.Snowfall
May through November are months without snowfall in Gretna.Sea temperature
In Gretna, the average seawater temperature in July is 15.3°C (59.5°F).Note: For most, swimming in 15.3°C (59.5°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.
Daylight
The average length of the day in July in Gretna is 16h and 43min.On the first day of July in Gretna, sunrise is at 4:38 am and sunset at 9:54 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 9:16 pm BST.
Sunshine
In Gretna, the average sunshine in July is 6.8h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during July leads to these advisories:
Prioritize safety - Suggestions to prevent sun damage are offered. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months in Gretna?
What is the temperature in July in Gretna?
What is the average humidity in July in Gretna?
How much does it rain in Gretna in July?
When it does not snow in Gretna?
What is the sea water temperature in July in Gretna?
How many hours of daylight does Gretna have in July?
What time are sunrise and sunset in July in Gretna?
How many hours of sunshine does Gretna have in July?
What is the month with the highest UV index in Gretna?
How high is the UV index in July in Gretna?
Average temperature in July
Gretna, United Kingdom
- Average high temperature in July: 17.5°C
The warmest month (with the highest average high temperature) is July (17.5°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in July: 10.2°C
The month with the highest average low temperature is August (10.3°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in July
Gretna, United Kingdom
- Average pressure in July: 1013.3mbar
The month with the highest atmospheric pressure is May (1015.8mbar).
The month with the lowest atmospheric pressure is November (1007.7mbar).
Average wind speed in July
Gretna, United Kingdom
- Average wind speed in July: 12.5km/h
The windiest month (with the highest average wind speed) is December (18.4km/h).
The calmest months (with the lowest average wind speed) are June and July (12.5km/h).
Average humidity in July
Gretna, United Kingdom
- Average humidity in July: 86%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is April (82%).
Average rainfall in July
Gretna, United Kingdom
- Average rainfall in July: 48mm
The wettest month (with the highest rainfall) is December (55mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in July
Gretna, United Kingdom
- Average rainfall days in July: 19.4 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is April (13.3 days).
Average snowfall in July
Gretna, United Kingdom
- Average snowfall in July: 0mm
The month with the highest snowfall is January (22mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in July
Gretna, United Kingdom
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (2.7 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average sea temperature in July
Gretna, United Kingdom
- Average sea temperature in July: 15.3°C
The best month for swimming (with the highest average sea temperature) is August (15.8°C).
The coldest month (with the lowest average sea temperature) is February (7.1°C).
Average daylight in July /
Average sunshine in July
Gretna, United Kingdom
- Average daylight in July: 16h and 4min
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 July: 6h and 5min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in July
Gretna, United Kingdom
- Average sunshine days in July: 7.2 days
The month with the most sunshine days is April (13 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in July
Gretna, United Kingdom
- Average UV index in July: 4
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Gretna, United Kingdom
- Average cloud cover in July: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility in July
Gretna, United Kingdom
- Average visibility in July: 8km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
