A kwakkelzomer is a summer with unsteady periods of dry, warm weather and often rain showers. In other words: changeable, frequently inclement weather conditions with too little typical summer weather. Not quite "four seasons a day" - as some jokingly claim. But certainly days when the sun shines brightly one moment, and it rains the next. Or all-day showers, all-day sun, or all-day grey and gloomy.