Basel Weather in August
In Basel, August brings high daytime temperatures around 25°C (77°F), with nights cooling to 14°C (57°F). Expect quite a bit of rainfall this month.
Rainfall in Basel in August
Typically, you can expect about 15 days of rain this month, with 118 mm (4.6 in) on average. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Basel in August
Temperatures in Basel in August top out at 25°C (77°F) and drop to 14°C (57°F) overnight. August is part of summer. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 14°C (57°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 Basel in August
Enjoy a sunny month with about 216 hours of sunshine, the clear skies make Basel even more beautiful.For Basel itself, September generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Basel's climate page.
Basel Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
25°C (77°F)
Chance of Rain
51%
Precipitation
118 mm (4.6 in)
Rainy days
15 days
Humidity
72%
Sunshine
216 hours
Percentage Sunshine
55%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Basel 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 12°C (54°F) to 15°C (59°F).
Average temperatures in August
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
Historical weather for Basel in August
Browse day-by-day weather records for Basel spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Basel historical weather extremes in August
According to our 49 years of weather records for Basel, the following extremes were recorded between 1976 and 2025.
- On August 13, 2003, temperatures climbed to 38°C (100°F), marking the warmest August day on record.
- Basel experienced its chilliest August day on August 28, 1993, reaching only 14°C (57°F).
- The coldest night in August in Basel was on August 30, 1998, with a minimum of 4°C (39°F).
- The heaviest August precipitation occurred on August 9, 2007, when 65 mm (2.6 in) of precipitation fell.
Best Places in Switzerland in August
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in August →
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tolerable
unpleasant
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What to Wear in Basel in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Basel in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Basel's climate page.
Temperature Rainfall Sunshine Humidity
See the full Basel climate overview or explore weather in Switzerland.
