Dunham is characterized by a cold and temperate climate with lots of precipitation all through the year. There is a large difference between the temperatures in the coldest and hottest months. Rainfall is also common throughout the year.
The best time to visit Dunham totally depends on your preferences. If a hot weather doesn’t bother you much then you can opt to go in the summer season. If snowfall is what you are looking for then plan a visit during the months of November to February. Usually the best time to go to Dunham is in the Spring or Autumn months as the weather is very pleasant and not at all at any extreme like the winter and summers.