It is International Coffee Day on Sunday, the third annual celebration of coffee’s journey from farmer to consumer.

Starbucks is the biggest coffee chain in the world with more than 24,000 stores in 70 countries.

However, customers pay different amounts for a Starbucks coffee based on their location.

The price of a Starbucks latte varies depending on where you are in the world.

On average the mixture of espresso and steamed milk from the coffee chain costs £3.07 across all its global locations, according to data compiled by Voucherbox.

Bern in Switzerland is home to the most expensive Starbucks coffee, with a latte costing £4.58, while the same drink costs almost half the price in the UK capital.

Regionally, however, Starbucks coffee in London is 9 percent more expensive than it is in other areas of the country.

In Plymouth, southwest England, a Stabucks latte costs £2.25, 20p cheaper than London.

A Scandinavian price hike

Three Scandinavian countries feature in the top five most expensive Starbucks coffee destinations. A latte costs £4.47 in Copenhagen or £4.03 in Oslo and Helsinki respectively.

Interestingly, a latte is 20 percent more than a cappuccino in both the Norwegian and Finnish capital cities.

Eighteen of the 22 stores surveyed charge the same price for a latte and a cappuccino.

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Meanwhile, on the other end of the spectrum, you can get a Starbucks latte in the Polish capital for just £2.19.

Other cheaper coffee destinations include Budapest, Madrid, Bangkok, Ottowa and Athens, where a Starbucks latte costs less than £2.50.

Sustainability first

If you feel like you’re paying too much for your Starbucks latte, you might be reassured to know that 99 percent of the chain’s coffee is ethically sourced.

The company has also committed to planting 100m trees by 2025.

To mark International Coffee Day, Starbucks will draw attention to its sustainability push.

Across a selected number of its US branches, menu boards will be replaced with information about the challenges faced by coffee farmers. 

The coffee giant’s director of ethical sourcing Kelly Goodejohn said:

We want our customers to know that they can feel good about their Starbucks purchase, which is positively impacting coffee growing communities around the world.