July weather forecastSaint Johns, Guernsey
July
Weather in July
July is a comfortable summer month in Saint Johns, Guernsey, with an average temperature ranging between min 15.3°C (59.5°F) and max 16.9°C (62.4°F).Temperature
Saint Johns marks the arrival of July with an average high-temperature of a comfortable 16.9°C (62.4°F), hardly different from June's 15.2°C (59.4°F). Nights in July cool down in Saint Johns, indicating a minor disparity from daytime highs with an average low-temperature of 15.3°C (59.5°F).Humidity
June and July, with an average relative humidity of 84%, are the most humid months.Rainfall
July is the month with the least rainfall. Rain falls for 12.8 days and accumulates 26mm (1.02") of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in July 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
The month with the most sunshine is July, with an average of 9.7h of sunshine.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In July, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Saint Johns, 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: 15.3°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).
Average pressure in July
Saint Johns, 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
Saint Johns, 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
Saint Johns, 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
Saint Johns, Guernsey
- Average rainfall in July: 26mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in July
Saint Johns, Guernsey
- Average rainfall days in July: 12.8 days
The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).
Average snowfall in July
Saint Johns, 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
Saint Johns, 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
Saint Johns, 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 42min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days in July
Saint Johns, Guernsey
- Average sunshine days in July: 15.4 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).
Average UV index in July
Saint Johns, 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
Saint Johns, Guernsey
- Average cloud cover in July: 37
The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in July
Saint Johns, 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).
