hi XXXXXXX if u have increased BP in evening that is not normal but u should b sure about it n to b sure u have to do few things - is you BP machine is working fine - have you not done any physical exertion before checking ur BP - you don t have fever now if everything told above all are not with u and ur BP is high in the evening then u have to compare it with the morning BP n do it in a routine n make flow chart with time n date increased BP in evening can be due to -kidney disease -diabetes - nervous system problems - thyroid problems - cardiovascular disease n other contributing factors are: -night duties - tobacco/ caffeine use -stress - anxiety