What August feels like in Brno
In Brno, August brings late summer. Days are warm enough for short sleeves, and time outdoors is easy. Once the sun goes down the air changes: nights stay mild. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Brno in August
Expect a mix of dry and wet days, with rain about one day in 3. A rainy day brings about 7.4 mm (0.3 in) on average — steady rain rather than a passing shower. That is heavier than Brno's usual 5.5 mm per rainy day across the year. It is among the three wettest months of the year.
Daylight and sunshine in August
On 15 August the sun rises at about 5:44 am and sets around 8:13 pm local time, giving 14 h 28 min of daylight. Days are getting shorter: 1 h 23 min less daylight than in mid-July. Measured sunshine covers about 77% of the daylight — there are plenty of bright spells.
How August compares to the rest of the year
August is the 2nd warmest month of the year in Brno. Against July, the average high is 0.7°C (1.3°F) lower, with 4 mm more rain. September is cooler again. By September, typical highs are 20.4°C (68.7°F).
Who August suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — comfortable for long walks and picnics.
Tips for visiting Brno in August
Versatile Layers
Pack pieces you can take off by noon and put back on at dusk.
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is Brno in August?
Expect around 25.4°C (77.7°F) in the afternoon and 15.6°C (60.1°F) at night, which most visitors would call warm.
Does it rain a lot in Brno in August?
Quite a lot — 74 mm spread over about 10 days.
What should I wear in Brno in August?
Based on the averages: versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.
Is August or September better for visiting Brno?
September, narrowly: it ranks #1 of 12 among Brno's months, against #2 for the other. September is cooler and has fewer rainy days.