You might spend a lot of your holiday inside, but if you're planning to venture beyond the casino, taking a look at local weather data can help you. The hottest months are usually August and July, with an average temperature of 18°C, while the coldest months are January and February, with an average of -1°C. The snowiest months in Rivne are January, December, November and February, with each month seeing an average of 23 cm of snowfall.