A waterproof rating of 5000 mm is generally considered to be adequate for light to moderate rain showers and everyday outdoor activities. It means that the fabric can withstand the pressure of a 5000 mm column of water before water begins to penetrate through the material.
While 5000 mm is suitable for casual use and activities like hiking, camping, and walking in light rain, it may not provide sufficient protection in heavy or prolonged rainfall or extreme weather conditions.
For activities in more challenging environments or prolonged exposure to rain, a higher waterproof rating, such as 10,000 mm or higher, may be preferable.
Additionally, factors like seam sealing, fabric breathability, and the quality of the DWR (Durable Water Repellent) coating also influence the overall water resistance and performance of a garment.