Weather in Hilton Head Island in September. The average maximum daytime temperature in Hilton Head Island in September is a warm 29Â°C (84Â°F) with high heat & humidity. There are usually 7 hours of bright sunshine each day, which represents 58% of the 12 hours of daylight. The average sea temperature in and around Hilton Head Island in September is 27Â°C (81Â°F).
The moisture usually comes from above, seeping through the finish and soaking into the wood, but it can also come from below, if the subfloor is wet. You can kill the mold and get rid of some of the discoloration using wood bleach, but you may have to stain and refinish the floor -- or part of it. There is a big difference between black discoloration that has settled on the surface of your oak flooring and in a discoloration of the wood itself. You can attribute the problem to moisture in both cases, but in the first instance, remediation is fairly straightforward and doesn't involve sanding or refinishing.
1 Spray Starbrite Mildew Stain Remover on the areas affected by mold or mildew. 2  Allow it to sit for a few moments so it can work. 3  Use a scrub brush or toothbrush for seat cracks or particularly bad areas. 4  A cloth scouring pad will provide gentle abrasion for most other mold and mildew cleaning jobs. Repeat if necessary. 2  Once the dirt, mold and mildew are gone, rinse well with water. 3  Mold will grow in any type of residue so be sure not to leave any behind. 4  Dry thoroughly with a towel. 5  Be sure to eliminate all moisture to reduce the likelihood of an immediate recurrence of the problem.