Weather in Warsaw in August

Prime time. If you get to pick your dates, August is the one. Highs average 25.8 °C, lows 14.3 °C, and rain falls on 11 days — nothing in the month is working against you.

August ranks 2 of 12 in Warsaw. Only September scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 5 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest August day reached 36.9 °C and the coldest night fell to 6.4 °C, and the wettest single day dropped 45 mm — roughly 73% of the month's rain in one day.

August is moderately variable: 7 mm in the driest year against 175 mm in the wettest, around an average of 62 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 8.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 66%.

How August sits in the year

Temperatures hold steady either side: 25.8 °C in July, 25.8 here, 20.4 in September. Nothing about the timing within the month matters much.

Daylight in August

14.8 hours of daylight, losing 1.8 hours across the month. That is between Warsaw's extremes of 16.7 and 7.8 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 32.5 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Warsaw versus nearby

If Warsaw is one option among several, the nearby comparison is worth making. Kraków is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Gdańsk is close enough to be a coin toss — 4.2 °C cooler, 2 days more rain.

So: August is effectively as good as it gets here — 3 points behind September, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Warsaw

See all twelve months in Warsaw, or where else to go in August.