The 2018 STC Climate index ranks 190 world cities based on the livability of their weather. The index takes in consideration heat, cold, rain, humidity and sunshine. One thing must be highlighted about our Climate Ranking; it values ’work days’ and not ’vacation days.’ In other words, ’suit and tie days’ and not ’toes in the sand days’ are valued. Temperatures above 30 °C and high humidity are fine if you are spending your days at the beach; they can even be acceptable in the city with shorts and open shirts, but for those conducting business in a suit and tie all yearlong, they can be as uncomfortable as temperatures below freezing.

Many Southeast Asian cities and Caribbean islands are towards the bottom partly due to those reasons. This has to be taken into consideration when looking at our rankings. Panama City’s score has been very poor, but its neighboring cities have scored very high, How? High humidity pushes the temperatures above 30 °C all year long, and therefore these locations suffer from precipitation ¾ of the year.

Many individuals do not spend most of the year in a given city. From this perspective, many cities can become much more livable if you were to amputate their winter or summer. With this in mind, take a closer look at the months between 18 °C and 30 °C.

There are obviously a great number of other cities that could have been included in our ranking to make it more competitive.

The data has been collected in fall 2017.Our source takes the averages of the many years they have on record.

Temperature represent the daytime average high experienced. A typical good day would be from 18 °C and 30 °C, sunny with no rain, and low or normal humidity.

Months between 18 °C and 30 °C: The months in the year where the daytime temperatures average between 18 °C and 30 °C. The more pleasant temperature for vacation.

Months between 10-30˚C: The number of months a year where the daytime temperatures average between 10 °C and 30 °C. The more acceptable temperature for work.

Days above 32˚C: Number of days a year where the daytime temperatures go above 32˚C

Days above 30˚C: Number of days a year where the daytime temperatures go above 30 °C.

Days under 0˚C: Number of days a year where the daytime temperatures go below 0 °C.

Annual mm precipitation: The average annual yearly mm of precipitation

Precipitation days in a year: The average number of days with precipitation a year. 1mm of rain is required to be counted as a precipitation day.

Month dew point above 15˚C: The number of months a year where humidity goes above 15˚C

Heating & Cooling degree days: The annual total of heating and cooling degree days. Heating and cooling degree days are the departure of the daily mean temperature from 18.33˚C.

Sunshine hours: The annual amount of sunshine hours in a year.