The Grove - Temperature&Humidity Sensor (SHT31) could be the finest and highest-accuracy humidity sensor you can find, as it can acquire the relative humidity at only ±2% error. On the other side it also features an excellent performance in terms of temperature measurement, you can use it in some extreme conditions, like -40 degree or 125 degree, and it still keeps an accuracy of ±0.3 degree.
I replaced this sensor with the old one in weather ranger weather station because the humidity sensor had inaccurate readings. Now its been awhile and this sensor still works fine.
Y
Yannic
Easy to use
This sensor is easy to use and give accurate readings. As I use two sensors attached to the same i2c bus, I needed to setup one sensor to the alternate i2c address. There are soldering points to attach a wire from Vin to Addr but it could have been easier.