Absolutely, and timing a trip around them is often what turns a good visit into a memorable one. Most countries have a predictable seasonal rhythm: spring brings flower blooms and garden festivals, summer opens up coastal towns and mountain hiking, autumn means harvest and wine or food festivals in the countryside, and winter offers ski resorts, hot springs, and holiday markets depending on the climate.
The tourism board's events calendar is the definitive source, and it is worth checking before you fix dates, both to catch highlights and to avoid clashes when prices spike during a festival you did not know about.
Two warnings: seasonal spots are wildly binary, magical in season and shuttered or dreary out of it, so verify that the cable car, boats, or resort facilities actually operate on your dates. And for the famous seasonal events, book transport and rooms months ahead, go early in the day, and have a backup plan, since blossom dates and snow conditions shift with the weather every year.