Geneva Weather in August

August in Geneva brings high temperatures around 24°C (75°F) during the day, dropping to 13°C (55°F) at night, with quite a bit of rainfall expected, averaging around 129 mm (5.1 in) for the month.

Rainfall in Geneva in August

Typically around 14 days of rainfall are expected, averaging 129 mm (5.1 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Geneva in August

Daytime highs in Geneva in August reach 24°C (75°F), with nights around 13°C (55°F). August is typically considered a summer month. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Geneva in August

There are approximately 241 hours of sunshine this month, resulting in mostly clear days.

Average water temperature in August

At 23°C (73°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Geneva.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Geneva's climate page.

Geneva Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Water Temperature 23°C (73°F)  

Chance of Rain 45%  

Precipitation 129 mm (5.1 in)  

Rainy days 14 days  

Humidity 68%  

Sunshine 241 hours  

Percentage Sunshine 61%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Geneva typically drop from around 26°C (79°F) at the start of August to approximately 23°C (73°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 15°C (59°F).

Average temperatures in August

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in August

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Geneva in August

Browse day-by-day weather records for Geneva spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Geneva historical weather extremes in August

Based on weather observations in Geneva between 1976 and 2025, these are the recorded extremes during August.

• The warmest day in August was on August 24, 2023, with a maximum of 39°C (102°F).
• On August 9, 2007, Geneva saw its coldest August day with temperatures maxing out at 13°C (55°F).
• Nighttime temperatures dropped to 1°C (34°F) on August 31, 1995, marking the coldest August night on record.

What to Wear in Geneva in August

For Geneva in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 23°C (73°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Geneva in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Geneva's climate page.

More climate data for Geneva

Temperature Rainfall Sunshine Humidity Water Temp

See the full Geneva climate overview or explore weather in Switzerland.