Planning for the weather is an important factor for making your trip to Puerto Arista a success, especially when you're splurging. The hottest months are usually April and March, with an average temperature of 26°C, while the coldest months are January and February, with an average of 24°C. The rainiest months in Puerto Arista are June, September, August and July, with each month seeing an average of 307 mm of rainfall.