July weather forecastL'Islet, Guernsey
July
Weather in July
July brings L'Islet, Guernsey into the heart of summer. Amidst the sizzling season, temperatures peak at a moderate 16.9°C (62.4°F), while nights cool down to 15.1°C (59.2°F). Impressively, even in the summer's pinnacle, temperatures remain manageable and winds settle into a gentle, soothing rhythm. Combined with near-constant daylight extending up to 15.8 hours, July weather facilitates an active outdoor lifestyle. The month embodies temperate summer characteristics, making it the season's highlight.Temperature
At the start of July, L'Islet's average high-temperature reaches a still refreshing 16.9°C (62.4°F), subtly different from the preceding month. In L'Islet, July's low temperatures hover around a still refreshing 15.1°C (59.2°F), reflecting a minor decrease from the daytime highs.Humidity
The months with the highest humidity are June and July, with an average relative humidity of 84%.Rainfall
July is the month with the least rainfall. Rain falls for 12.9 days and accumulates 26mm (1.02") of precipitation.Snowfall
In L'Islet, snow does not fall in February through December.Daylight
In July, the average length of the day in L'Islet is 15h and 47min.On the first day of July, sunrise is at 05:08 and sunset at 21:20. On the last day of the month, sunrise is at 05:40 and sunset at 20:52 BST.
Sunshine
With an average of 9.5h of sunshine, July has the most sunshine of the year.UV index
The months with the highest UV index in L'Islet are July through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in July converts into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
L'Islet, Guernsey
- Average high temperature in July: 16.9°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 July: 15.1°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 July
L'Islet, Guernsey
- Average pressure in July: 1016.7mbar
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 July
L'Islet, Guernsey
- Average wind speed in July: 21.9km/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 July
L'Islet, Guernsey
- Average humidity in July: 84%
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 July
L'Islet, Guernsey
- Average rainfall in July: 26mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in July
L'Islet, Guernsey
- Average rainfall days in July: 12.9 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 July
L'Islet, Guernsey
- Average snowfall in July: 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 July
L'Islet, Guernsey
- Average snowfall days in July: 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 July /
Average sunshine in July
L'Islet, Guernsey
- Average daylight in July: 15h and 48min
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 July: 9h and 30min
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 July
L'Islet, Guernsey
- Average sunshine days in July: 15.3 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 July
L'Islet, Guernsey
- Average UV index in July: 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 July
L'Islet, Guernsey
- Average cloud cover in July: 38
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 July
L'Islet, Guernsey
- Average visibility in July: 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).





