Weather will likely play an important role when you plan your trip to El Salvador, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and January, with an average temperature of 19°C, while the coldest months are July and August, with an average of 15°C. Between January and March, the daytime average is 25°C and the night-time average is 16°C. Between April and June, temperatures average 22°C during the day and 11°C at night. Between July and September, the temperature averages 20°C during the day and 10°C at night. Between October and December, the average temperature is 23°C during the day and 12°C at night.