If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Ojo: The hottest months are usually January and February, with an average temperature of 29°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Ojo are June, July, September and October, with each month seeing an average of 251 mm of rainfall.