Czechia · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Brno are May, June and September, when daytime temperatures are agreeable and rainfall is relatively low.
Brno sees its warmest weather in July, when daytime highs average around 27°C, and its coolest in January (around 2°C).
Annual precipitation totals roughly 513mm — July is typically the wettest month (~72mm) and February the driest (~22mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
July is the sunniest month, with about 258 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 2° / -3°C | 23mm | 🤔 Fair |
| February | 5° / -2°C | 22mm | 🤔 Fair |
| March | 10° / 1°C | 30mm | 🤔 Fair |
| April | 16° / 5°C | 27mm | 👍 Good |
| May | 20° / 10°C | 59mm | 🌟 Great |
| June | 24° / 13°C | 70mm | 🌟 Great |
| July | 27° / 15°C | 72mm | 🌟 Great |
| August | 26° / 15°C | 61mm | 🌟 Great |
| September | 21° / 11°C | 51mm | 🌟 Great |
| October | 14° / 6°C | 35mm | 👍 Good |
| November | 8° / 2°C | 32mm | 🤔 Fair |
| December | 3° / -2°C | 30mm | 🤔 Fair |
January in Brno is cold, with average daytime highs around 2°C (35°F) and nighttime lows near -3°C (26°F). Expect roughly 23mm of precipitation spread over about 6 rainy days, with little rainfall.
☀️ About 55 hours of sunshine over the month (~2h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf
February in Brno is cold, with average daytime highs around 5°C (40°F) and nighttime lows near -2°C (28°F). Expect roughly 22mm of precipitation spread over about 5 rainy days, with little rainfall.
☀️ About 85 hours of sunshine over the month (~3h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf
March in Brno is chilly, with average daytime highs around 10°C (49°F) and nighttime lows near 1°C (33°F). Expect roughly 30mm of precipitation spread over about 6 rainy days, with little rainfall.
☀️ About 140 hours of sunshine over the month (~5h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
April in Brno is mild, with average daytime highs around 16°C (61°F) and nighttime lows near 5°C (41°F). Expect roughly 27mm of precipitation spread over about 6 rainy days, with little rainfall.
☀️ About 203 hours of sunshine over the month (~7h/day).
🎒 What to pack — light jacket · layers for cool evenings
May in Brno is pleasantly warm, with average daytime highs around 20°C (69°F) and nighttime lows near 10°C (49°F). Expect roughly 59mm of precipitation spread over about 9 rainy days, with little rainfall.
☀️ About 235 hours of sunshine over the month (~8h/day).
🎒 What to pack — light layers · comfortable walking shoes
June in Brno is pleasantly warm, with average daytime highs around 24°C (75°F) and nighttime lows near 13°C (56°F). Expect roughly 70mm of precipitation spread over about 8 rainy days, with a moderate amount of rain.
☀️ About 245 hours of sunshine over the month (~8h/day).
🎒 What to pack — light layers · comfortable walking shoes
July in Brno is warm, with average daytime highs around 27°C (80°F) and nighttime lows near 15°C (59°F). Expect roughly 72mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
☀️ About 258 hours of sunshine over the month (~9h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
August in Brno is warm, with average daytime highs around 26°C (80°F) and nighttime lows near 15°C (59°F). Expect roughly 61mm of precipitation spread over about 7 rainy days, with a moderate amount of rain.
☀️ About 250 hours of sunshine over the month (~8h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
September in Brno is pleasantly warm, with average daytime highs around 21°C (69°F) and nighttime lows near 11°C (51°F). Expect roughly 51mm of precipitation spread over about 6 rainy days, with little rainfall.
☀️ About 174 hours of sunshine over the month (~6h/day).
🎒 What to pack — light layers · comfortable walking shoes
October in Brno is mild, with average daytime highs around 14°C (57°F) and nighttime lows near 6°C (43°F). Expect roughly 35mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 112 hours of sunshine over the month (~4h/day).
🎒 What to pack — light jacket · layers for cool evenings
November in Brno is cold, with average daytime highs around 8°C (46°F) and nighttime lows near 2°C (36°F). Expect roughly 32mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 55 hours of sunshine over the month (~2h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf
December in Brno is cold, with average daytime highs around 3°C (37°F) and nighttime lows near -2°C (28°F). Expect roughly 30mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 43 hours of sunshine over the month (~1h/day).
🎒 What to pack — warm coat · sweaters and layers · scarf