Nauru is hit by monsoon rains between November and February. Annual rainfall is highly variable and is influenced by the El Niño-Southern Oscillation, with several significant recorded droughts.

The temperature on Nauru ranges between 26 and 35° Celsius (79 to 95 °Fahrenheit) during the day and between 25 and 28° Celsius (77 to 82 °F.) at night[citation needed]. As an island country, Nauru is quite vulnerable to climate change and sea level change, but to what degree is difficult to predict. At least 80% of the land of Nauru is well-elevated, but this area will be uninhabitable until the phosphate mining rehabilitation program is implemented. Also, the agricultural area of Nauru is quite close to the seashore.