Karlovy Vary weather in September 2025

The temperatures in Karlovy Vary in September are quite cold with temperatures between 7°C and 18°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Karlovy Vary during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Karlovy Vary in September 2025.

If you’re planning to visit Karlovy Vary in the near future, we highly recommend that you review the 14 day weather forecast for Karlovy Vary before you arrive.

Temperatures

18° / 7°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

9.5

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 21° /10°	2 23° /11°	3 24° /12°	4 24° /12°	5 24° /12°	6 23° /12°
7 24° /13°	8 24° /12°	9 23° /10°	10 22° /11°	11 20° /10°	12 20° /10°	13 19° /9°
14 19° /8°	15 18° /9°	16 16° /8°	17 18° /8°	18 18° /8°	19 16° /7°	20 17° /6°
21 19° /6°	22 17° /6°	23 19° /5°	24 16° /7°	25 19° /8°	26 19° /9°	27 17° /8°
28 16° /7°	29 15° /6°	30 14° /5°

Explore the weather in Karlovy Vary in other months

Karlovy Vary annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	1° / -7°	9	4	20	103 mm	Awful	Karlovy Vary in January
February	2° / -6°	8	6	15	71 mm	Awful	Karlovy Vary in February
March	7° / -1°	9	12	10	72 mm	Awful	Karlovy Vary in March
April	13° / 2°	7	20	3	67 mm	Awful	Karlovy Vary in April
May	17° / 5°	9	21	0	134 mm	Ok	Karlovy Vary in May
June	21° / 9°	10	20	0	154 mm	Ok	Karlovy Vary in June
July	23° / 11°	9	22	0	144 mm	Good	Karlovy Vary in July
August	23° / 11°	8	23	0	127 mm	Good	Karlovy Vary in August
September	18° / 7°	6	24	0	84 mm	Good	Karlovy Vary in September
October	13° / 3°	6	24	1	69 mm	Ok	Karlovy Vary in October
November	7° / -1°	7	18	5	77 mm	Awful	Karlovy Vary in November
December	3° / -4°	10	8	15	95 mm	Awful	Karlovy Vary in December