Mold inspection and indoor air help in Virginia Beach and Norfolk, VA
This is home. We are based in Virginia Beach, and on-site investigations here are routine.
What the Virginia Beach and Norfolk climate does to a house
Measured at NOAA's Norfolk weather station.
- At the NOAA Norfolk station, mornings average 78 percent relative humidity across the year, and afternoons 57 percent.
- The dampest mornings come in August, averaging 83 percent. Afternoons are driest in April, at 51 percent.
- A normal year brings 46.53 inches of precipitation over about 117 days, with the most in August (5.52 inches).
- In 4 of 12 months the average morning humidity is 80 percent or higher.
- Even in the afternoon, average humidity stays above 60 percent in 2 of 12 months. Indoors, 60 percent is the line where mold starts to find it easy.
| Month | Morning RH | Afternoon RH | Precip. (in) | Days with precip. | Mean temp (°F) |
|---|---|---|---|---|---|
| January | 74% | 58% | 3.40 | 11 | 40.4 |
| February | 74% | 56% | 3.12 | 10 | 42.6 |
| March | 73% | 54% | 3.68 | 11 | 49.4 |
| April | 73% | 51% | 3.41 | 10 | 58.2 |
| May | 76% | 57% | 3.41 | 11 | 66.6 |
| June | 78% | 57% | 4.26 | 9 | 75.3 |
| July | 80% | 59% | 5.14 | 11 | 79.6 |
| August | 83% | 61% | 5.52 | 10 | 77.9 |
| September | 82% | 61% | 4.76 | 9 | 72.3 |
| October | 81% | 59% | 3.42 | 8 | 62.1 |
| November | 79% | 57% | 3.15 | 9 | 52.9 |
| December | 76% | 59% | 3.26 | 9 | 44.1 |
Source: NOAA National Centers for Environmental Information, Comparative Climatic Data: average relative humidity (period of record through 2018), normal precipitation, mean temperature and cooling degree days (1981 to 2010 normals), and mean days with 0.01 inch or more of precipitation, 90 degrees or more, and 32 degrees or less. Last updated September 24, 2026.
Where moisture hides in Virginia Beach and Norfolk homes
Winter condensation in the attic
Warm, moist indoor air leaking into a cold attic condenses on the roof sheathing. The result is frost in January and dark staining on the underside of the roof by spring. Here about 49 days a year drop to 32°F or below.
Humid summers in basements
Basements stay cool, so humid summer air that reaches them hits the dew point. Musty basements and mold on stored items are the classic sign. Summer mornings here average 80 percent humidity.
Snowmelt and spring rain
Water that pools against the foundation during the thaw finds cracks and gaps and wicks into finished basements. A normal year brings 46.53 inches of precipitation.
Tight houses with little fresh air
Homes sealed up for winter trap cooking and shower moisture. Windows run with condensation and the corners of exterior walls grow mold. Winter afternoons here average 58 percent humidity outdoors.
Common questions from Virginia Beach and Norfolk
Large, custom or multi-property situations: see Keystone.
Mold or air problem in Virginia Beach and Norfolk?
Start with a free 15 minute call. We will tell you what you need, whether that is a local inspector, a virtual consultation or an on-site investigation.