I think you are asking about how these factors affect what would characteristically be described as a wildfire in a marsh, swampland-type of setting, so that is how I will address this question.
Wildfires are fires that are either accidentally set or set on purpose that burn, to a more or less degree, uncontrollably and consume everything in their paths. Several factors can influence the rate and level of destruction, such as topography, wind currents, temperature, and the amount of consumable fuel, also known as geological substrate. Since this is a marsh, the topography would not be as much of a factor, as this is a low-lying area, with little hills and valleys. Wind currents can play a factor, as can definitely temperature. Marsh lands always have some degree of consumable brush and trees a wild fire would engage. Another factor to consider is the amount of moisture, though serving as a natural firebreak, which would be a barrier the fire would have to cross. The more I think about it, I would tend to think it would be harder to have a wildfire setting in a swampy, marsh-like area. While these factors could and would have some type of effect, the impact would be felt more with a land area with differing topography and substrata.