Because of Trinidad's southerly location, temperatures are equable year round. The average daily high temperature in Port of Spain is 31°C (88°F) in both January and July, while the low averages 22°C (72°F) in July and is only one degree cooler in January. December to May are the driest months, with a relative humidity of 75%. June to August, the wettest months, average 260mm (10in) of rain and 23 rainy days each month.