Tristan da Cunha has pleasant temperatures all year long. The wet climate causes a large amount of rainfall, and it is highly unlikely for areas below 500 meters (1,600 feet) to experience frost. The average annual temperature in Tristan da Cunha is a mild 14.8 degrees Celsius (58.6 degrees Fahrenheit).

The temperature range in January is typically 15.4 to 20.4 degrees Celsius (59.7 to 68.7 degrees Fahrenheit). During August, you can expect a temperature range of 9.7 to 14.3 degrees Celsius (49.3 to 57.6 degrees Fahrenheit).