August weather forecastGeneva, Switzerland

August
Weather in August
In August, Geneva remains in the grip of the summer's heat, albeit a slight dip in temperatures to a high of around 25.8°C (78.4°F). Despite the city experiencing less sunshine hours than in July, it still stands as one of the most sunshine-filled months. The daylight duration starts shortening compared to the previous month, but it still showers a generous amount of light on the city. Rain still accompanies the summer landscape, further contributing to the lush greenery that marks Geneva's terrain during this period.Temperature
The shift from July to August is characterized by an average high-temperature of a still moderately hot 25.8°C (78.4°F), not significantly different from the 26.5°C (79.7°F) of July. During August, Geneva consistently records a temperature low averaging a mild 14°C (57.2°F).Humidity
The average relative humidity in August in Geneva is 67%.Rainfall
In Geneva, during August, the rain falls for 7.9 days and regularly aggregates up to 82mm (3.23") of precipitation. Throughout the year, in Geneva, there are 109 rainfall days, and 1006mm (39.61") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Geneva.Daylight
The average length of the day in August is 14h and 7min.On the first day of August in Geneva, sunrise is at 06:17 and sunset at 21:05. On the last day of the month, sunrise is at 06:55 and sunset at 20:15 CEST.
Sunshine
The average sunshine in August is 7.6h.UV index
In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In August, a daily UV index of 7 turns into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Geneva, Switzerland
- Average high temperature in August: 25.8°C
The warmest month (with the highest average high temperature) is July (26.5°C).
The month with the lowest average high temperature is January (4.5°C).
- Average low temperature in August: 14°C
The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average humidity in August
Geneva, Switzerland
- Average humidity in August: 67%
The months with the highest relative humidity are January, November and December (81%).
The month with the lowest relative humidity is July (64%).
Average rainfall in August
Geneva, Switzerland
- Average rainfall in August: 82mm
The wettest month (with the highest rainfall) is October (105mm).
The driest month (with the least rainfall) is February (68mm).
Average rainfall days in August
Geneva, Switzerland
- Average rainfall days in August: 7.9 days
The month with the highest number of rainy days is May (10.6 days).
The month with the least rainy days is July (7.6 days).
Average snowfall in August
Geneva, Switzerland
- Average snowfall in August: 0mm
The month with the highest snowfall is January (108mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in August
Geneva, Switzerland
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Geneva, Switzerland
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 7h and 36min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average UV index in August
Geneva, Switzerland
- Average UV index in August: 7
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).





